@ARTICLE{2022LRSP...19....2C,
       author = {{Cliver}, Edward W. and {Schrijver}, Carolus J. and {Shibata}, Kazunari and {Usoskin}, Ilya G.},
        title = "Extreme solar events",
      journal = {Liv.\ Rev.\ Solar Phys.},
         year = 2022,
       volume = {19},
       number = {1},
          eid = {2},
        pages = {2},
          doi = {10.1007/s41116-022-00033-8},
archivePrefix = {arXiv},
       eprint = {2205.09265},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022LRSP...19....2C},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2022arXiv220812103D,
       author = {{Dash}, Soumyaranjan and {Nandy}, Dibyendu and {Usoskin}, Ilya},
        title = "Long-term forcing of Sun's coronal field, open flux and cosmic ray modulation potential during grand minima, maxima and regular activity phases by the solar dynamo mechanism",
      journal = {arXiv e-prints},
         year = 2022,
          eid = {arXiv:2208.12103},
        pages = {arXiv:2208.12103},
archivePrefix = {arXiv},
       eprint = {2208.12103},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022arXiv220812103D},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2022SoPh..297..105O,
       author = {{Owens}, Mathew J. and {Barnard}, Luke A. and {Pope}, Benjamin J.~S. and {Lockwood}, Mike and {Usoskin}, Ilya and {Asvestari}, Eleanna},
        title = "Solar Energetic-Particle Ground-Level Enhancements and the Solar Cycle",
      journal = {\solphys},
         year = 2022,
       volume = {297},
       number = {8},
          eid = {105},
        pages = {105},
          doi = {10.1007/s11207-022-02037-x},
archivePrefix = {arXiv},
       eprint = {2207.12787},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022SoPh..297..105O},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2022A&A...664C...3U,
       author = {{Usoskin}, I.~G. and {Solanki}, S.~K. and {Krivova}, N. and {Hofer}, B. and {Kovaltsov}, G.~A. and {Wacker}, L. and {Brehm}, N. and {Kromer}, B.},
        title = "Solar cyclic activity over the last millennium reconstructedfrom annual $^{14}$C data (Corrigendum)",
      journal = {\aap},
         year = 2022,
       volume = {664},
          eid = {C3},
        pages = {C3},
          doi = {10.1051/0004-6361/202140711e},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022A&A...664C...3U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2022cosp...44.3520N,
       author = {{Nandi}, Dibyendu and {Usoskin}, Ilya and {Pevtsov}, Alexei},
        title = "Long-Term Solar Variability and Solar Cycle Predictions: Current State of Understanding",
    booktitle = {44th COSPAR Scientific Assembly. Held 16-24 July},
         year = 2022,
       volume = {44},
        pages = {3520},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022cosp...44.3520N},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2022cosp...44.1573M,
       author = {{Mukhopadhyay}, Agnit and {Usoskin}, Ilya and {Liemohn}, Michael and {Panovska}, Sanja and {Brenner}, Austin and {Garc{\'{\i}}a-Sage}, Katherine and {Welling}, Daniel and {Ganushkina}, Natalia},
        title = "Rapid Auroral Wandering During the Laschamp Event",
    booktitle = {44th COSPAR Scientific Assembly. Held 16-24 July},
         year = 2022,
       volume = {44},
        pages = {1573},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022cosp...44.1573M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2022cosp...44.1075M,
       author = {{Mishev}, Alexander and {Usoskin}, Ilya and {Koldobskiy}, Sergey and {Kocharov}, Leon and {Larsen}, Nicholas},
        title = "Spectral and Anisotropy Characteristics of the Solar Protons during Ground Level Enhancement (GLE) \# 73 on 28 October 2021 derived with Neutron Monitor data",
    booktitle = {44th COSPAR Scientific Assembly. Held 16-24 July},
         year = 2022,
       volume = {44},
        pages = {1075},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022cosp...44.1075M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2022cosp...44.1067G,
       author = {{Gil}, Agnieszka and {Usoskin}, Ilya and {Poluianov}, Stepan and {Mishev}, Alexander},
        title = "Analysis of diurnal cosmic-ray variations as observed by polar NMs",
    booktitle = {44th COSPAR Scientific Assembly. Held 16-24 July},
         year = 2022,
       volume = {44},
        pages = {1067},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022cosp...44.1067G},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2022cosp...44.1064P,
       author = {{Papaioannou}, Athanasios and {Usoskin}, Ilya and {Gieseler}, Jan and {Herbst}, Konstantin and {K{\"u}hl}, Patrick and {Rouillard}, Alexis and {Mishev}, Alexander and {Wimmer-Schweingruber}, Robert and {Vainio}, Rami and {Anastasiadis}, Anastasios and {Kouloumvakos}, Athanasios},
        title = "Characteristics of the First Ground Level Enhancement (GLE) of Solar Cycle 25 on 28 October 2021",
    booktitle = {44th COSPAR Scientific Assembly. Held 16-24 July},
         year = 2022,
       volume = {44},
        pages = {1064},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022cosp...44.1064P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2022cosp...44.1061M,
       author = {{Mishev}, Alexander and {Usoskin}, Ilya},
        title = "Application of a neutron monitor data analysis for quantification of cosmic-ray induced terrestrial effects",
    booktitle = {44th COSPAR Scientific Assembly. Held 16-24 July},
         year = 2022,
       volume = {44},
        pages = {1061},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022cosp...44.1061M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2022cosp...44.1046K,
       author = {{Krivova}, Natalie and {Usoskin}, Ilya},
        title = "Reconstructions of solar activity and variability from cosmogenic isotope data",
    booktitle = {44th COSPAR Scientific Assembly. Held 16-24 July},
         year = 2022,
       volume = {44},
        pages = {1046},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022cosp...44.1046K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2022SoPh..297...88M,
       author = {{Mishev}, Alexander L. and {Kocharov}, Leon G. and {Koldobskiy}, Sergey A. and {Larsen}, Nicholas and {Riihonen}, Esa and {Vainio}, Rami and {Usoskin}, Ilya G.},
        title = "High-Resolution Spectral and Anisotropy Characteristics of Solar Protons During the GLE N$^{{\ensuremath{\circ}}}$73 on 28 October 2021 Derived with Neutron-Monitor Data Analysis",
      journal = {\solphys},
         year = 2022,
       volume = {297},
       number = {7},
          eid = {88},
        pages = {88},
          doi = {10.1007/s11207-022-02026-0},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022SoPh..297...88M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2022PhRvL.128w1102A,
       author = {{Aguilar}, M. and {Cavasonza}, L. Ali and {Ambrosi}, G. and {Arruda}, L. and {Attig}, N. and {Barao}, F. and {Barrin}, L. and {Bartoloni}, A. and {Ba{\c{s}}e{\v{g}}mez-du Pree}, S. and {Battiston}, R. and et al.},
        title = "Properties of Daily Helium Fluxes",
      journal = {\prl},
         year = 2022,
       volume = {128},
       number = {23},
          eid = {231102},
        pages = {231102},
          doi = {10.1103/PhysRevLett.128.231102},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022PhRvL.128w1102A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2022A&A...660L...5P,
       author = {{Papaioannou}, A. and {Kouloumvakos}, A. and {Mishev}, A. and {Vainio}, R. and {Usoskin}, I. and {Herbst}, K. and {Rouillard}, A.~P. and {Anastasiadis}, A. and {Gieseler}, J. and {Wimmer-Schweingruber}, R. and {K{\"u}hl}, P.},
        title = "The first ground-level enhancement of solar cycle 25 on 28 October 2021",
      journal = {\aap},
         year = 2022,
       volume = {660},
          eid = {L5},
        pages = {L5},
          doi = {10.1051/0004-6361/202142855},
archivePrefix = {arXiv},
       eprint = {2202.07927},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022A&A...660L...5P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2022icrc.confE1319U,
       author = {{Usoskin}, I. and {Koldobskiy}, S. and {Kovaltsov}, G. and {Sukhodolov}, T. and {Mishev}, A. and {Mironova}, I.},
        title = "Strongest directly observed Solar Proton Event of 23-Feb-1956: Revised reference for the cosmogenic-isotope method",
    booktitle = {37th International Cosmic Ray Conference. 12-23 July 2021. Berlin},
         year = 2022,
          eid = {1319},
        pages = {1319},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022icrc.confE1319U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2022icrc.confE1315M,
       author = {{Mishev}, A. and {Usoskin}, I.},
        title = "Performance of the current and extended global NM network for solar particle registration and analysis",
    booktitle = {37th International Cosmic Ray Conference. 12-23 July 2021. Berlin},
         year = 2022,
          eid = {1315},
        pages = {1315},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022icrc.confE1315M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2022icrc.confE1284K,
       author = {{Koldobskiy}, S. and {Kovaltsov}, G. and {Usoskin}, I.},
        title = "Role of heavier-than-proton nuclei in neutron monitor response",
    booktitle = {37th International Cosmic Ray Conference. 12-23 July 2021. Berlin},
         year = 2022,
          eid = {1284},
        pages = {1284},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022icrc.confE1284K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2022icrc.confE1273K,
       author = {{Koldobskiy}, S. and {Raukunen}, O. and {Vainio}, R. and {Kovaltsov}, G. and {Usoskin}, I.},
        title = "New reconstruction of the event-integrated spectra for GLE events",
    booktitle = {37th International Cosmic Ray Conference. 12-23 July 2021. Berlin},
         year = 2022,
          eid = {1273},
        pages = {1273},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022icrc.confE1273K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2022icrc.confE1261M,
       author = {{Mishev}, A. and {Usoskin}, I. and {Kocharov}, L.},
        title = "Halloween GLEs on October-November 2003, spectra and angular distribution: Revised results",
    booktitle = {37th International Cosmic Ray Conference. 12-23 July 2021. Berlin},
         year = 2022,
          eid = {1261},
        pages = {1261},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022icrc.confE1261M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2022icrc.confE1247M,
       author = {{Mishev}, A. and {Koldobskiy}, S. and {Kovaltsov}, G. and {Gil}, A. and {Usoskin}, I.},
        title = "New neutron monitor altitude-dependent yield function and its application to an analysis of neutron-monitor data",
    booktitle = {37th International Cosmic Ray Conference. 12-23 July 2021. Berlin},
         year = 2022,
          eid = {1247},
        pages = {1247},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022icrc.confE1247M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2022icrc.confE1244V,
       author = {{V{\"a}is{\"a}nen}, P. and {Usoskin}, I. and {Mursula}, K.},
        title = "Quality survey of Neutron Monitor data sources for 1951-2019",
    booktitle = {37th International Cosmic Ray Conference. 12-23 July 2021. Berlin},
         year = 2022,
          eid = {1244},
        pages = {1244},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022icrc.confE1244V},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2022icrc.confE1241U,
       author = {{Usoskin}, I. and {Koldobskiy}, S. and {Gil}, A. and {Kovaltsov}, G. and {Usoskina}, I. and {Willamo}, T. and {Ibragimov}, A.},
        title = "A major update of the International GLE Database: Correction for the variable GCR background",
    booktitle = {37th International Cosmic Ray Conference. 12-23 July 2021. Berlin},
         year = 2022,
          eid = {1241},
        pages = {1241},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022icrc.confE1241U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2022icrc.confE1237S,
       author = {{Simil{\"a}}, M. and {Poluianov}, S. and {Usoskin}, I. and {Mishev}, A. and {Kovaltsov}, G. and {Strauss}, D.~T.},
        title = "Pulse height-length analysis of data from neutron monitors DOMC/DOMB with a new data acquisition system",
    booktitle = {37th International Cosmic Ray Conference. 12-23 July 2021. Berlin},
         year = 2022,
          eid = {1237},
        pages = {1237},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022icrc.confE1237S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2022icrc.confE1236M,
       author = {{Mishev}, A. and {Usoskin}, I. and {Koldobskiy}, S. and {Kovaltsov}, G. and {Kocharov}, L.},
        title = "Application of the verified neutron monitor yield function for GLE analysis",
    booktitle = {37th International Cosmic Ray Conference. 12-23 July 2021. Berlin},
         year = 2022,
          eid = {1236},
        pages = {1236},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022icrc.confE1236M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2022icrc.confE.514T,
       author = {{Trzaska}, W.~H. and {Enqvist}, T. and {J{\k{e}}drzejczak}, K. and {Joutsenvaara}, J. and {Kasztelan}, M. and {Kotavaara}, O. and {Kuusiniemi}, P. and {Loo}, K. and {Orzechowski}, J. and {Puputti}, J. and {Sobkow}, A. and {S{\l}upecki}, M. and {Szabelski}, J. and {Usoskin}, I. and {Ward}, T.},
        title = "New NEMESIS Results",
    booktitle = {37th International Cosmic Ray Conference. 12-23 July 2021. Berlin},
         year = 2022,
          eid = {514},
        pages = {514},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022icrc.confE.514T},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2022icrc.confE.497K,
       author = {{Kasztelan}, M. and {Enqvist}, T. and {J{\k{e}}drzejczak}, K. and {Joutsenvaara}, J. and {Kotavaara}, O. and {Kuusiniemi}, P. and {Loo}, K.~K. and {Orzechowski}, J. and {Puputti}, J. and {Sobkow}, A. and {S{\l}upecki}, M. and {Szabelski}, J. and {Usoskin}, I. and {Trzaska}, W.~H. and {Ward}, T.~E.},
        title = "High-multiplicity neutron events registered by NEMESIS experiment",
    booktitle = {37th International Cosmic Ray Conference. 12-23 July 2021. Berlin},
         year = 2022,
          eid = {497},
        pages = {497},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022icrc.confE.497K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2022SoPh..297...38K,
       author = {{Koldobskiy}, Sergey A. and {K{\"a}hk{\"o}nen}, Riikka and {Hofer}, Bernhard and {Krivova}, Natalie A. and {Kovaltsov}, Gennady A. and {Usoskin}, Ilya G.},
        title = "Time Lag Between Cosmic-Ray and Solar Variability: Sunspot Numbers and Open Solar Magnetic Flux",
      journal = {\solphys},
         year = 2022,
       volume = {297},
       number = {3},
          eid = {38},
        pages = {38},
          doi = {10.1007/s11207-022-01970-1},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022SoPh..297...38K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2022NatCo..13.1196B,
       author = {{Brehm}, Nicolas and {Christl}, Marcus and {Knowles}, Timothy D.~J. and {Casanova}, Emmanuelle and {Evershed}, Richard P. and {Adolphi}, Florian and {Muscheler}, Raimund and {Synal}, Hans-Arno and {Mekhaldi}, Florian and {Paleari}, Chiara I. and {Leuschner}, Hanns-Hubert and {Bayliss}, Alex and {Nicolussi}, Kurt and {Pichler}, Thomas and {Schl{\"u}chter}, Christian and {Pearson}, Charlotte L. and {Salzer}, Matthew W. and {Fonti}, Patrick and {Nievergelt}, Daniel and {Hantemirov}, Rashit and {Brown}, David M. and {Usoskin}, Ilya and {Wacker}, Lukas},
        title = "Tree-rings reveal two strong solar proton events in 7176 and 5259 BCE",
      journal = {Nature Communications},
         year = 2022,
       volume = {13},
          eid = {1196},
        pages = {1196},
          doi = {10.1038/s41467-022-28804-9},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022NatCo..13.1196B},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2022JGRA..12729919K,
       author = {{Koldobskiy}, Sergey and {Usoskin}, Ilya and {Kovaltsov}, Gennady A.},
        title = "Effective Energy of Cosmogenic Isotope ($^{10}$Be, $^{14}$C and $^{36}$Cl) Production by Solar Energetic Particles and Galactic Cosmic Rays",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2022,
       volume = {127},
       number = {1},
          eid = {e29919},
        pages = {e29919},
          doi = {10.1029/2021JA029919},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022JGRA..12729919K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2021PhRvL.127A1102A,
       author = {{Aguilar}, M. and {Cavasonza}, L. Ali and {Ambrosi}, G. and {Arruda}, L. and {Attig}, N. and {Barao}, F. and {Barrin}, L. and {Bartoloni}, A. and {Ba{\c{s}}e{\v{g}}mez-du Pree}, S. and {Battiston}, R. and et al.},
        title = "Periodicities in the Daily Proton Fluxes from 2011 to 2019 Measured by the Alpha Magnetic Spectrometer on the International Space Station from 1 to 100 GV",
      journal = {\prl},
         year = 2021,
       volume = {127},
       number = {27},
          eid = {271102},
        pages = {271102},
          doi = {10.1103/PhysRevLett.127.271102},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2021PhRvL.127A1102A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2021GMD....14.7605G,
       author = {{Golubenko}, Kseniia and {Rozanov}, Eugene and {Kovaltsov}, Gennady and {Lepp{\"a}nen}, Ari-Pekka and {Sukhodolov}, Timofei and {Usoskin}, Ilya},
        title = "Application of CCM SOCOL-AERv2-BE to cosmogenic beryllium isotopes: description and validation for polar regions",
      journal = {Geoscientific Model Development},
         year = 2021,
       volume = {14},
       number = {12},
        pages = {7605-7620},
          doi = {10.5194/gmd-14-7605-2021},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2021GMD....14.7605G},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2021AGUFMSH51B..03K,
       author = {{Kocharov}, Leon and {Usoskin}, Ilya and {Mishev}, Alexander},
        title = "Ground Level Enhancement Events: Interplanetary Protons versus Protons Interacting at the Sun.",
    booktitle = {AGU abstracts},
         year = 2021,
       volume = {2021},
          eid = {SH51B-03},
        pages = {SH51B-03},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2021AGUFMSH51B..03K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2021GeoRL..4894848U,
       author = {{Usoskin}, Ilya G. and {Kovaltsov}, Gennady A.},
        title = "Mind the Gap: New Precise $^{14}$C Data Indicate the Nature of Extreme Solar Particle Events",
      journal = {\grl},
         year = 2021,
       volume = {48},
       number = {17},
          eid = {e94848},
        pages = {e94848},
          doi = {10.1029/2021GL094848},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2021GeoRL..4894848U},
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@ARTICLE{2021PhRvL.127b1101A,
       author = {{Aguilar}, M. and {Cavasonza}, L. Ali and {Alpat}, B. and {Ambrosi}, G. and {Arruda}, L. and {Attig}, N. and {Barao}, F. and {Barrin}, L. and {Bartoloni}, A. and {Ba{\c{s}}e{\v{g}}mez-du Pree}, S. and et al.},
        title = "Properties of a New Group of Cosmic Nuclei: Results from the Alpha Magnetic Spectrometer on Sodium, Aluminum, and Nitrogen",
      journal = {\prl},
         year = 2021,
       volume = {127},
       number = {2},
          eid = {021101},
        pages = {021101},
          doi = {10.1103/PhysRevLett.127.021101},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2021PhRvL.127b1101A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2021ApJ...915...12K,
       author = {{Kocharov}, Leon and {Omodei}, Nicola and {Mishev}, Alexander and {Pesce-Rollins}, Melissa and {Longo}, Francesco and {Yu}, Sijie and {Gary}, Dale E. and {Vainio}, Rami and {Usoskin}, Ilya},
        title = "Multiple Sources of Solar High-energy Protons",
      journal = {\apj},
         year = 2021,
       volume = {915},
       number = {1},
          eid = {12},
        pages = {12},
          doi = {10.3847/1538-4357/abff57},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2021ApJ...915...12K},
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@ARTICLE{2021A&A...650A..70K,
       author = {{Krivova}, N.~A. and {Solanki}, S.~K. and {Hofer}, B. and {Wu}, C. -J. and {Usoskin}, I.~G. and {Cameron}, R.},
        title = "Modelling the evolution of the Sun's open and total magnetic flux",
      journal = {\aap},
         year = 2021,
       volume = {650},
          eid = {A70},
        pages = {A70},
          doi = {10.1051/0004-6361/202140504},
archivePrefix = {arXiv},
       eprint = {2103.15603},
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@ARTICLE{2021SoPh..296...79M,
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        title = "GLE \# 67 Event on 2 November 2003: An Analysis of the Spectral and Anisotropy Characteristics Using Verified Yield Function and Detrended Neutron Monitor Data",
      journal = {\solphys},
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       number = {5},
          eid = {79},
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          doi = {10.1007/s11207-021-01832-2},
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@ARTICLE{2021JGRA..12628941V,
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        title = "Seven Decades of Neutron Monitors (1951-2019): Overview and Evaluation of Data Sources",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2021,
       volume = {126},
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          eid = {e28941},
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          doi = {10.1029/2020JA028941},
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@ARTICLE{2021A&A...649A.141U,
       author = {{Usoskin}, I.~G. and {Solanki}, S.~K. and {Krivova}, N.~A. and {Hofer}, B. and {Kovaltsov}, G.~A. and {Wacker}, L. and {Brehm}, N. and {Kromer}, B.},
        title = "Solar cyclic activity over the last millennium reconstructed from annual $^{14}$C data",
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         year = 2021,
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@ARTICLE{2021JGRA..12628959S,
       author = {{Simil{\"a}}, Markus and {Usoskin}, Ilya and {Poluianov}, Stepan and {Mishev}, Alexander and {Kovaltsov}, Gennady A. and {Strauss}, Du Toit},
        title = "High Altitude Polar NM With the New DAQ System as a Tool to Study Details of the Cosmic Ray Induced Nucleonic Cascade",
      journal = {Journal of Geophysical Research (Space Physics)},
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@INPROCEEDINGS{2021EGUGA..23.2287G,
       author = {{Golubenko}, Kseniia and {Rozanov}, Eugene and {Kovaltsov}, Genady and {Lepp{\"a}nen}, Ari-Pekka and {Usoskin}, Ilya},
        title = "Atmospheric production and transport of 7Be activity by cosmic rays: Modelling with the chemistry-climate model SOCOLv3.0 and comparison with direct measurements",
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@ARTICLE{2021yCat..36490141U,
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        title = "VizieR Online Data Catalog: 1000-year sunspot series (Usoskin+, 2021)",
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@ARTICLE{2021A&A...647A.132K,
       author = {{Koldobskiy}, S. and {Raukunen}, O. and {Vainio}, R. and {Kovaltsov}, G.~A. and {Usoskin}, I.},
        title = "New reconstruction of event-integrated spectra (spectral fluences) for major solar energetic particle events",
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@ARTICLE{2021SpWea..1902626M,
       author = {{Mishev}, A.~L. and {Koldobskiy}, S.~A. and {Usoskin}, I.~G. and {Kocharov}, L.~G. and {Kovaltsov}, G.~A.},
        title = "Application of the Verified Neutron Monitor Yield Function for an Extended Analysis of the GLE \# 71 on 17 May 2012",
      journal = {Space Weather},
         year = 2021,
       volume = {19},
       number = {2},
          eid = {e02626},
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          doi = {10.1029/2020SW002626},
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@ARTICLE{2021PhRvL.126h1102A,
       author = {{Aguilar}, M. and {Cavasonza}, L. Ali and {Allen}, M.~S. and {Alpat}, B. and {Ambrosi}, G. and {Arruda}, L. and {Attig}, N. and {Barao}, F. and {Barrin}, L. and {Bartoloni}, A. and et al.},
        title = "Properties of Heavy Secondary Fluorine Cosmic Rays: Results from the Alpha Magnetic Spectrometer",
      journal = {\prl},
         year = 2021,
       volume = {126},
       number = {8},
          eid = {081102},
        pages = {081102},
          doi = {10.1103/PhysRevLett.126.081102},
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@ARTICLE{2021PhR...894....1A,
       author = {{Aguilar}, M. and {Ali Cavasonza}, L. and {Ambrosi}, G. and {Arruda}, L. and {Attig}, N. and {Barao}, F. and {Barrin}, L. and {Bartoloni}, A. and {Ba{\c{s}}e{{g}}mez-du Pree}, S. and {Bates}, J. and et al.},
        title = "The Alpha Magnetic Spectrometer (AMS) on the international space station: Part II - Results from the first seven years",
      journal = {\physrep},
         year = 2021,
       volume = {894},
        pages = {1-116},
          doi = {10.1016/j.physrep.2020.09.003},
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@ARTICLE{2021yCat..36470132K,
       author = {{Koldobskiy}, S. and {Raukunen}, O. and {Vainio}, R. and {Kovaltsov}, G.~A. and {Usoskin}, I.},
        title = "VizieR Online Data Catalog: GLE integral intensities (Koldobskiy+, 2021)",
      journal = {VizieR Online Data Catalog},
         year = 2021,
          eid = {J/A+A/647/A132},
        pages = {J/A+A/647/A132},
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@INPROCEEDINGS{2021cosp...43E2412N,
       author = {{Nandi}, Dibyendu and {Usoskin}, Ilya and {Pevtsov}, Alexei},
        title = "International Space Weather Action Team (ISWAT) S1: Long-term Solar Variability",
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@INPROCEEDINGS{2021cosp...43E.861G,
       author = {{Gil}, Agnieszka and {Usoskin}, Ilya and {Koldobskiy}, Sergey and {Kovaltsov}, Gennady A. and {Mishev}, Alexander},
        title = "Validation of the updated neutron monitor yield function via data from AMS-02",
    booktitle = {43rd COSPAR Scientific Assembly. Held 28 January - 4 February},
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@ARTICLE{2021SoPh..296...13U,
       author = {{Usoskin}, Ilya and {Kovaltsov}, Gennady and {Kiviaho}, Wilma},
        title = "Robustness of Solar-Cycle Empirical Rules Across Different Series Including an Updated Active-Day Fraction (ADF) Sunspot Group Series",
      journal = {\solphys},
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       volume = {296},
       number = {1},
          eid = {13},
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          doi = {10.1007/s11207-020-01750-9},
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       eprint = {2012.08415},
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@ARTICLE{2021PhRvL.126d1104A,
       author = {{Aguilar}, M. and {Cavasonza}, L. Ali and {Allen}, M.~S. and {Alpat}, B. and {Ambrosi}, G. and {Arruda}, L. and {Attig}, N. and {Barao}, F. and {Barrin}, L. and {Bartoloni}, A. and et al.},
        title = "Properties of Iron Primary Cosmic Rays: Results from the Alpha Magnetic Spectrometer",
      journal = {\prl},
         year = 2021,
       volume = {126},
       number = {4},
          eid = {041104},
        pages = {041104},
          doi = {10.1103/PhysRevLett.126.041104},
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@INPROCEEDINGS{2020AGUFMSH0030022K,
       author = {{Kuznetsova}, M.~M. and {Belehaki}, A. and {Bisi}, M.~M. and {Bruinsma}, S. and {Fung}, S.~F. and {Glover}, A. and {Grande}, M. and {Guo}, J. and {Jun}, I. and {Linker}, J. and {Mann}, I.~R. and {Masson}, A. and {Mendoza}, A.~M.~M. and {Murray}, S.~A. and {Nandy}, D. and {Opgenoorth}, H.~J. and {Pevtsov}, A.~A. and {Plainaki}, C. and {Reiss}, M. and {Sutton}, E.~K. and {Temmer}, M. and {Usoskin}, I.~G. and {Yao}, Z. and {Yardley}, S. and {Zheng}, Y.},
        title = "COSPAR International Space Weather Action Teams: Addressing Challenges Across the Field of Space Weather.",
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@ARTICLE{2020JGRD..12533147P,
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        title = "A New Full 3-D Model of Cosmogenic Tritium $^{3}$H Production in the Atmosphere (CRAC:3H)",
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         year = 2020,
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@ARTICLE{2020A&A...640A..17U,
       author = {{Usoskin}, I. and {Koldobskiy}, S. and {Kovaltsov}, G.~A. and {Gil}, A. and {Usoskina}, I. and {Willamo}, T. and {Ibragimov}, A.},
        title = "Revised GLE database: Fluences of solar energetic particles as measured by the neutron-monitor network since 1956",
      journal = {\aap},
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@ARTICLE{2020JSWSC..10...39S,
       author = {{Strauss}, Du Toit and {Poluianov}, Stepan and {van der Merwe}, Cobus and {Kr{\"u}ger}, Hendrik and {Diedericks}, Corrie and {Kr{\"u}ger}, Helena and {Usoskin}, Ilya and {Heber}, Bernd and {Nndanganeni}, Rendani and {Blanco-{\'A}valos}, Juanjo and {Garc{\'\i}a-Tejedor}, Ignacio and {Herbst}, Konstantin and {Caballero-L{\'{o}}pez}, Rogelio and {Moloto}, Katlego and {Lara}, Alejandro and {Walter}, Michael and {Giday}, Nigussie Mezgebe and {Traversi}, Rita},
        title = "The mini-neutron monitor: a new approach in neutron monitor design",
      journal = {Journal of Space Weather and Space Climate},
         year = 2020,
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          eid = {39},
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@ARTICLE{2020yCat..36400017U,
       author = {{Usoskin}, I.~G. and {Koldobskiy}, S. and {Kovaltsov}, G.~A. and {Gil}, A. and {Usoskina}, I. and {Willamo}, T. and {Ibragimov}, A.},
        title = "VizieR Online Data Catalog: CR Ground Level Enhancements spectra (IGLED) (Usoskin+, 2020)",
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@ARTICLE{2020JGRA..12527921U,
       author = {{Usoskin}, Ilya G. and {Koldobskiy}, Sergey A. and {Kovaltsov}, Gennady A. and {Rozanov}, Eugene V. and {Sukhodolov}, Timofei V. and {Mishev}, Alexander L. and {Mironova}, Irina A.},
        title = "Revisited Reference Solar Proton Event of 23 February 1956: Assessment of the Cosmogenic-Isotope Method Sensitivity to Extreme Solar Events",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2020,
       volume = {125},
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@ARTICLE{2020GeoRL..4788619G,
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        title = "Natural Sources of Ionization and Their Impact on Atmospheric Electricity",
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@ARTICLE{2020PhRvL.124u1102A,
       author = {{Aguilar}, M. and {Ali Cavasonza}, L. and {Ambrosi}, G. and {Arruda}, L. and {Attig}, N. and {Barao}, F. and {Barrin}, L. and {Bartoloni}, A. and {Ba{\c{s}}e{\v{g}}mez-du Pree}, S. and {Battiston}, R. and et al.},
        title = "Properties of Neon, Magnesium, and Silicon Primary Cosmic Rays Results from the Alpha Magnetic Spectrometer",
      journal = {\prl},
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       number = {21},
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@ARTICLE{2020JSWSC..10...17M,
       author = {{Mishev}, Alexander and {Usoskin}, Ilya},
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@ARTICLE{2020AdAst2020E...2H,
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        title = "Big Data Processing and Modeling in Solar Physics",
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@ARTICLE{2020MNRAS.491.5572F,
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@ARTICLE{2020JGRA..12527433M,
       author = {{Mishev}, Alexander L. and {Koldobskiy}, Sergey A. and {Kovaltsov}, Gennady A. and {Gil}, Agnieszka and {Usoskin}, Ilya G.},
        title = "Updated Neutron-Monitor Yield Function: Bridging Between In Situ and Ground-Based Cosmic Ray Measurements",
      journal = {Journal of Geophysical Research (Space Physics)},
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       volume = {125},
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          doi = {10.1029/2019JA027433},
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@ARTICLE{2020ApJ...890...13K,
       author = {{Kocharov}, Leon and {Pesce-Rollins}, Melissa and {Laitinen}, Timo and {Mishev}, Alexander and {K{\"u}hl}, Patrick and {Klassen}, Andreas and {Jin}, Meng and {Omodei}, Nicola and {Longo}, Francesco and {Webb}, David F. and {Cane}, Hilary V. and {Heber}, Bernd and {Vainio}, Rami and {Usoskin}, Ilya},
        title = "Interplanetary Protons versus Interacting Protons in the 2017 September 10 Solar Eruptive Event",
      journal = {\apj},
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       number = {1},
          eid = {13},
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@INCOLLECTION{2019esps.book....7M,
       author = {{Miyake}, F. and {Ebihara}, Y. and {Hayakawa}, H. and {Maehara}, H. and {Mitsuma}, Y. and {Usoskin}, I. and {Wang}, F. and {Willis}, D.~M.},
        title = "Further Search for Extreme Events",
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@INCOLLECTION{2019esps.book....4J,
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        title = "Cosmogenic Isotopes as Proxies for Solar Energetic Particles",
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@INCOLLECTION{2019esps.book....2K,
       author = {{Kusano}, K. and {Cliver}, E. and {Hayakawa}, H. and {Kovaltsov}, G.~A. and {Usoskin}, I.~G.},
        title = "What Can Be Learned from Modern Data?",
    booktitle = {Extreme Solar Particle Storms},
         year = 2019,
       editor = {{Miyake}, Fusa and {Usoskin}, Ilya and {Poluianov}, Stepan},
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@INCOLLECTION{2019esps.book....1U,
       author = {{Usoskin}, I. and {Miyake}, F.},
        title = "Introduction",
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@BOOK{2019esps.book.....M,
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        title = "Extreme Solar Particle Storms; The hostile Sun",
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@ARTICLE{2019PhRvL.123r1102A,
       author = {{Aguilar}, M. and {Ali Cavasonza}, L. and {Ambrosi}, G. and {Arruda}, L. and {Attig}, N. and {Bachlechner}, A. and {Barao}, F. and {Barrau}, A. and {Barrin}, L. and {Bartoloni}, A. and et al.},
        title = "Properties of Cosmic Helium Isotopes Measured by the Alpha Magnetic Spectrometer",
      journal = {\prl},
         year = 2019,
       volume = {123},
       number = {18},
          eid = {181102},
        pages = {181102},
          doi = {10.1103/PhysRevLett.123.181102},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2019PhRvL.123r1102A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2019SoPh..294...94K,
       author = {{Koldobskiy}, Sergey A. and {Kovaltsov}, Gennady A. and {Mishev}, Alexander L. and {Usoskin}, Ilya G.},
        title = "New Method of Assessment of the Integral Fluence of Solar Energetic (> 1 GV Rigidity) Particles from Neutron Monitor Data",
      journal = {\solphys},
         year = 2019,
       volume = {294},
       number = {7},
          eid = {94},
        pages = {94},
          doi = {10.1007/s11207-019-1485-8},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2019SoPh..294...94K},
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@INPROCEEDINGS{2019ICRC...36.1165U,
       author = {{Usoskin}, I. and {V{\"a}is{\"a}nen}, P. and {Mursula}, K.},
        title = "Multi-NM spectral slope analysis of long-term cosmic-ray variations at Earth",
    booktitle = {36th International Cosmic Ray Conference (ICRC2019)},
         year = 2019,
       series = {International Cosmic Ray Conference},
       volume = {36},
          eid = {1165},
        pages = {1165},
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@INPROCEEDINGS{2019ICRC...36.1164U,
       author = {{Usoskin}, I. and {Wu}, C.~J. and {Krivova}, N. and {Solanki}, S.~K. and {Kovaltsov}, G. and {Baroni}, M. and {Bard}, E.},
        title = "Cosmic-ray variability on the multi-millennial time scale: A new multi-proxy reconstruction",
    booktitle = {36th International Cosmic Ray Conference (ICRC2019)},
         year = 2019,
       series = {International Cosmic Ray Conference},
       volume = {36},
          eid = {1164},
        pages = {1164},
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@INPROCEEDINGS{2019ICRC...36.1139P,
       author = {{Poluianov}, S. and {Kovaltsov}, G. and {Usoskin}, I.},
        title = "Spectra of solar energetic particle and galactic cosmic rays over a million years reconstructed using aluminium-26 data from lunar rocks",
    booktitle = {36th International Cosmic Ray Conference (ICRC2019)},
         year = 2019,
       series = {International Cosmic Ray Conference},
       volume = {36},
          eid = {1139},
        pages = {1139},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2019ICRC...36.1139P},
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@INPROCEEDINGS{2019ICRC...36.1125M,
       author = {{Mishev}, A. and {Kovaltsov}, G. and {Usoskin}, I.},
        title = "Neutron monitor yield function at several altitudes above sea level: new improved computation",
    booktitle = {36th International Cosmic Ray Conference (ICRC2019)},
         year = 2019,
       series = {International Cosmic Ray Conference},
       volume = {36},
          eid = {1125},
        pages = {1125},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2019ICRC...36.1125M},
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@INPROCEEDINGS{2019ICRC...36.1124M,
       author = {{Mishev}, A. and {Usoskin}, I.},
        title = "Spectra of extreme GLEs derived using neutron monitor network records",
    booktitle = {36th International Cosmic Ray Conference (ICRC2019)},
         year = 2019,
       series = {International Cosmic Ray Conference},
       volume = {36},
          eid = {1124},
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       adsurl = {https://ui.adsabs.harvard.edu/abs/2019ICRC...36.1124M},
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@INPROCEEDINGS{2019ICRC...36.1123M,
       author = {{Mishev}, A. and {Usoskin}, I.},
        title = "Usage of the global NM network for assessment of the radiation exposure at flight altitudes",
    booktitle = {36th International Cosmic Ray Conference (ICRC2019)},
         year = 2019,
       series = {International Cosmic Ray Conference},
       volume = {36},
          eid = {1123},
        pages = {1123},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2019ICRC...36.1123M},
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@INPROCEEDINGS{2019ICRC...36.1094K,
       author = {{Koldobskiy}, S. and {Bindi}, V. and {Corti}, C. and {Kovaltsov}, G. and {Usoskin}, I.},
        title = "Validation of the neutron monitor yield functions using data from AMS-02 and PAMELA experiments, 2006-2017",
    booktitle = {36th International Cosmic Ray Conference (ICRC2019)},
         year = 2019,
       series = {International Cosmic Ray Conference},
       volume = {36},
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@INPROCEEDINGS{2019ICRC...36.1093K,
       author = {{Koldobskiy}, S. and {Mishev}, A. and {Kovaltsov}, G. and {Usoskin}, I.},
        title = "A neutron monitor as an integral spectrometer for GLE analysis: Effective rigidity and reassessment of integral fluxes",
    booktitle = {36th International Cosmic Ray Conference (ICRC2019)},
         year = 2019,
       series = {International Cosmic Ray Conference},
       volume = {36},
          eid = {1093},
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       adsurl = {https://ui.adsabs.harvard.edu/abs/2019ICRC...36.1093K},
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@ARTICLE{2019BAAS...51c.190P,
       author = {{Pevtsov}, Alexei and {Griffin}, Elizabeth and {Grindlay}, Jonathan and {Kafka}, Stella and {Bartlett}, Jennifer and {Usoskin}, Ilya and {Mursula}, Kalevi and {Gibson}, Sarah and {Pillet}, Valent{\'\i}n and {Burkepile}, Joan and {Webb}, David and {Clette}, Fr{\'e}d{\'e}ric and {Hesser}, James and {Stetson}, Peter and {Mu{\~n}oz-Jaramillo}, Andres and {Hill}, Frank and {Bogart}, Rick and {Osborn}, Wayne and {Longcope}, Dana},
        title = "Historical astronomical data: urgent need for preservation, digitization enabling scientific exploration",
      journal = {\baas},
         year = 2019,
       volume = {51},
       number = {3},
          eid = {190},
        pages = {190},
archivePrefix = {arXiv},
       eprint = {1903.04839},
 primaryClass = {astro-ph.IM},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2019BAAS...51c.190P},
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@ARTICLE{2019JGRA..124.2367K,
       author = {{Koldobskiy}, Sergey A. and {Bindi}, Veronica and {Corti}, Claudio and {Kovaltsov}, Gennady A. and {Usoskin}, Ilya G.},
        title = "Validation of the Neutron Monitor Yield Function Using Data From AMS-02 Experiment, 2011-2017",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2019,
       volume = {124},
       number = {4},
        pages = {2367-2379},
          doi = {10.1029/2018JA026340},
archivePrefix = {arXiv},
       eprint = {1904.01929},
 primaryClass = {physics.space-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2019JGRA..124.2367K},
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@INPROCEEDINGS{2019EGUGA..2117690V,
       author = {{V{\"a}is{\"a}nen}, Pauli and {Usoskin}, Ilya and {Mursula}, Kalevi},
        title = "An analysis of the spectral properties of long-term galactic cosmic ray variability in the heliosphere via a multiple-dataset study",
    booktitle = {EGU General Assembly Conference Abstracts},
         year = 2019,
       series = {EGU General Assembly Conference Abstracts},
          eid = {17690},
        pages = {17690},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2019EGUGA..2117690V},
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@INPROCEEDINGS{2019EGUGA..21.4226U,
       author = {{Usoskin}, Ilya and {Koldobsky}, Sergey and {Kovaltsov}, Gennady},
        title = "Normalization of the neutron monitor response to cosmic rays using AMS-02 measurements",
    booktitle = {EGU General Assembly Conference Abstracts},
         year = 2019,
       series = {EGU General Assembly Conference Abstracts},
          eid = {4226},
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       adsurl = {https://ui.adsabs.harvard.edu/abs/2019EGUGA..21.4226U},
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@ARTICLE{2019JGRA..124..804V,
       author = {{V{\"a}is{\"a}nen}, Pauli and {Usoskin}, Ilya and {Mursula}, Kalevi},
        title = "Long-Term and Solar Cycle Variation of Galactic Cosmic Rays: Evidence for Variable Heliospheric Turbulence",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2019,
       volume = {124},
       number = {2},
        pages = {804-811},
          doi = {10.1029/2018JA026135},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2019JGRA..124..804V},
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@ARTICLE{2018A&A...620A.120W,
       author = {{Wu}, C. -J. and {Krivova}, N.~A. and {Solanki}, S.~K. and {Usoskin}, I.~G.},
        title = "Solar total and spectral irradiance reconstruction over the last 9000 years",
      journal = {\aap},
         year = 2018,
       volume = {620},
          eid = {A120},
        pages = {A120},
          doi = {10.1051/0004-6361/201832956},
archivePrefix = {arXiv},
       eprint = {1811.03464},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2018A&A...620A.120W},
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@ARTICLE{2018SoPh..293..154G,
       author = {{Gil}, Agnieszka and {Kovaltsov}, Gennady A. and {Mikhailov}, Vladimir V. and {Mishev}, Alexander and {Poluianov}, Stepan and {Usoskin}, Ilya G.},
        title = "An Anisotropic Cosmic-Ray Enhancement Event on 07-June-2015: A Possible Origin",
      journal = {\solphys},
         year = 2018,
       volume = {293},
       number = {11},
          eid = {154},
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          doi = {10.1007/s11207-018-1375-5},
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@ARTICLE{2018SoPh..293..136M,
       author = {{Mishev}, A. and {Usoskin}, I. and {Raukunen}, O. and {Paassilta}, M. and {Valtonen}, E. and {Kocharov}, L. and {Vainio}, R.},
        title = "First Analysis of Ground-Level Enhancement (GLE) 72 on 10 September 2017: Spectral and Anisotropy Characteristics",
      journal = {\solphys},
         year = 2018,
       volume = {293},
       number = {10},
          eid = {136},
        pages = {136},
          doi = {10.1007/s11207-018-1354-x},
archivePrefix = {arXiv},
       eprint = {1810.10536},
 primaryClass = {physics.space-ph},
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@ARTICLE{2018JSWSC...8A..46M,
       author = {{Mishev}, Alexander and {Tuohino}, Sasu and {Usoskin}, Ilya},
        title = "Neutron monitor count rate increase as a proxy for dose rate assessment at aviation altitudes during GLEs",
      journal = {Journal of Space Weather and Space Climate},
         year = 2018,
       volume = {8},
          eid = {A46},
        pages = {A46},
          doi = {10.1051/swsc/2018032},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2018JSWSC...8A..46M},
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@ARTICLE{2018A&A...618A..96P,
       author = {{Poluianov}, S. and {Kovaltsov}, G.~A. and {Usoskin}, I.~G.},
        title = "Solar energetic particles and galactic cosmic rays over millions of years as inferred from data on cosmogenic $^{26}$Al in lunar samples",
      journal = {\aap},
         year = 2018,
       volume = {618},
          eid = {A96},
        pages = {A96},
          doi = {10.1051/0004-6361/201833561},
archivePrefix = {arXiv},
       eprint = {1807.10153},
 primaryClass = {astro-ph.SR},
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@ARTICLE{2018JASTP.176...69U,
       author = {{Usoskin}, Ilya G.},
        title = "Comment on the paper by Popova et al. ``On a role of quadruple component of magnetic field in defining solar activity in grand cycles''",
      journal = {Journal of Atmospheric and Solar-Terrestrial Physics},
         year = 2018,
       volume = {176},
        pages = {69-71},
          doi = {10.1016/j.jastp.2017.09.018},
archivePrefix = {arXiv},
       eprint = {1710.05203},
 primaryClass = {astro-ph.SR},
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@ARTICLE{2018NatCo...9.3495U,
       author = {{Uusitalo}, J. and {Arppe}, L. and {Hackman}, T. and {Helama}, S. and {Kovaltsov}, G. and {Mielik{\"a}inen}, K. and {M{\"a}kinen}, H. and {N{\"o}jd}, P. and {Palonen}, V. and {Usoskin}, I. and {Oinonen}, M.},
        title = "Solar superstorm of AD 774 recorded subannually by Arctic tree rings",
      journal = {Nature Communications},
         year = 2018,
       volume = {9},
          eid = {3495},
        pages = {3495},
          doi = {10.1038/s41467-018-05883-1},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2018NatCo...9.3495U},
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@INPROCEEDINGS{2018IAUS..335...82V,
       author = {{V{\"a}is{\"a}nen}, Pauli and {Usoskin}, Ilya and {Mursula}, Kalevi},
        title = "Structure of the Power Spectral Density of Galactic Cosmic Ray Variation during 1953-2016",
    booktitle = {Space Weather of the Heliosphere: Processes and Forecasts},
         year = 2018,
       editor = {{Foullon}, Claire and {Malandraki}, Olga E.},
       volume = {335},
        pages = {82-86},
          doi = {10.1017/S1743921317010122},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2018IAUS..335...82V},
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@ARTICLE{2018ApJ...862L..20K,
       author = {{Kocharov}, Leon and {Pohjolainen}, Silja and {Reiner}, Mike J. and {Mishev}, Alexander and {Wang}, Haimin and {Usoskin}, Ilya and {Vainio}, Rami},
        title = "Spatial Organization of Seven Extreme Solar Energetic Particle Events",
      journal = {\apjl},
         year = 2018,
       volume = {862},
       number = {2},
          eid = {L20},
        pages = {L20},
          doi = {10.3847/2041-8213/aad18d},
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@INPROCEEDINGS{2018cosp...42E3695W,
       author = {{Wu}, Chi-Ju and {Usoskin}, Ilya and {Krivova}, Natalie and {Solanki}, Sami K. and {Kovaltsov}, Gennady A. and {Baroni}, Melanie and {Bard}, Edouard},
        title = "Solar Activity and Irradiance Reconstruction over the Holocene",
    booktitle = {42nd COSPAR Scientific Assembly},
         year = 2018,
       volume = {42},
          eid = {D2.4-28-18},
        pages = {D2.4-28-18},
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@INPROCEEDINGS{2018cosp...42E3483V,
       author = {{V{\"a}is{\"a}nen}, Pauli and {Usoskin}, Ilya and {Mursula}, Kalevi},
        title = "Variation of the PSD slopes of cosmic rays in 1953-2016",
    booktitle = {42nd COSPAR Scientific Assembly},
         year = 2018,
       volume = {42},
          eid = {D2.4-19-18},
        pages = {D2.4-19-18},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2018cosp...42E3483V},
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@INPROCEEDINGS{2018cosp...42E3473U,
       author = {{Usoskin}, Ilya and {Shea}, Margaret and {Smart}, Don and {Poluianov}, Stepan and {Mishev}, Alexander},
        title = "An updated definition of GLE and sub-GLE events",
    booktitle = {42nd COSPAR Scientific Assembly},
         year = 2018,
       volume = {42},
          eid = {D2.1-48-18},
        pages = {D2.1-48-18},
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@INPROCEEDINGS{2018cosp...42E3472U,
       author = {{Usoskin}, Ilya},
        title = "Extreme solar particle events: historical prospective",
    booktitle = {42nd COSPAR Scientific Assembly},
         year = 2018,
       volume = {42},
          eid = {D2.4-16-18},
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@INPROCEEDINGS{2018cosp...42E2299M,
       author = {{Mishev}, Alexander and {Usoskin}, Ilya},
        title = "Global NM network - a usefull tool to assess radiation hazard at flight altitudes",
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@INPROCEEDINGS{2018cosp...42E2298M,
       author = {{Mishev}, Alexander and {Usoskin}, Ilya and {Valtonen}, Eino and {Kocharov}, Leon and {Vainio}, Rami and {Raukunen}, Osku and {Paassilta}, Miikka},
        title = "GLE 72 on 10 September 2017 - an analysis using neutron monitor and space-borne data",
    booktitle = {42nd COSPAR Scientific Assembly},
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@INPROCEEDINGS{2018cosp...42E1207G,
       author = {{Gil}, Agnieszka and {Usoskin}, Ilya and {Kovaltsov}, Gennady A. and {Asvestari}, Eleanna},
        title = "The effective energy for neutron monitors and cosmogenic isotopes-redefined concept",
    booktitle = {42nd COSPAR Scientific Assembly},
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@ARTICLE{2018SoPh..293..110K,
       author = {{Koldobskiy}, Sergey A. and {Kovaltsov}, Gennady A. and {Usoskin}, Ilya G.},
        title = "Effective Rigidity of a Polar Neutron Monitor for Recording Ground-Level Enhancements",
      journal = {\solphys},
         year = 2018,
       volume = {293},
       number = {7},
          eid = {110},
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          doi = {10.1007/s11207-018-1326-1},
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@ARTICLE{2018AdSpR..62..398T,
       author = {{Tuohino}, S. and {Ibragimov}, A. and {Usoskin}, I. and {Mishev}, A.},
        title = "Upgrade of GLE database: Assessment of effective dose rate at flight altitude",
      journal = {Advances in Space Research},
         year = 2018,
       volume = {62},
       number = {2},
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          doi = {10.1016/j.asr.2018.04.021},
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@ARTICLE{2018A&A...615A..93W,
       author = {{Wu}, C.~J. and {Usoskin}, I.~G. and {Krivova}, N. and {Kovaltsov}, G.~A. and {Baroni}, M. and {Bard}, E. and {Solanki}, S.~K.},
        title = "Solar activity over nine millennia: A consistent multi-proxy reconstruction",
      journal = {\aap},
         year = 2018,
       volume = {615},
          eid = {A93},
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          doi = {10.1051/0004-6361/201731892},
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@ARTICLE{2018A&A...615A..85E,
       author = {{Egorova}, T. and {Schmutz}, W. and {Rozanov}, E. and {Shapiro}, A.~I. and {Usoskin}, I. and {Beer}, J. and {Tagirov}, R.~V. and {Peter}, T.},
        title = "Revised historical solar irradiance forcing",
      journal = {\aap},
         year = 2018,
       volume = {615},
          eid = {A85},
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          doi = {10.1051/0004-6361/201731199},
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@ARTICLE{2018JGRA..123.4479K,
       author = {{Koldobskiy}, Sergey A. and {Kovaltsov}, Gennady A. and {Usoskin}, Ilya G.},
        title = "A Solar Cycle of Cosmic Ray Fluxes for 2006-2014: Comparison between PAMELA and Neutron Monitors",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2018,
       volume = {123},
       number = {6},
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@ARTICLE{2018yCat..36150093W,
       author = {{Wu}, C.~J. and {Usoskin}, I.~G. and {Krivova}, N. and {Kovaltsov}, G.~A. and {Baroni}, M. and {Bard}, E. and {Solanki}, S.~K.},
        title = "VizieR Online Data Catalog: Reconstructed decadal sunspot numbers (Wu+, 2018)",
      journal = {VizieR Online Data Catalog},
         year = 2018,
          eid = {J/A+A/615/A93},
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@ARTICLE{2018SoPh..293...69W,
       author = {{Willamo}, T. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "A Test of the Active-Day Fraction Method of Sunspot Group Number Calibration: Dependence on the Level of Solar Activity",
      journal = {\solphys},
         year = 2018,
       volume = {293},
       number = {4},
          eid = {69},
        pages = {69},
          doi = {10.1007/s11207-018-1292-7},
archivePrefix = {arXiv},
       eprint = {1803.10501},
 primaryClass = {astro-ph.SR},
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@INPROCEEDINGS{2018EGUGA..2010485G,
       author = {{Gil}, Agnieszka and {Asvestari}, Eleanna and {Kovaltsov}, Gennady and {Usoskin}, Ilya},
        title = "Effective Energy of Neutron Monitors and Cosmogenic Isotopes",
    booktitle = {EGU General Assembly Conference Abstracts},
         year = 2018,
       series = {EGU General Assembly Conference Abstracts},
        pages = {10485},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2018EGUGA..2010485G},
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@INPROCEEDINGS{2018EGUGA..20.6021V,
       author = {{V{\"a}is{\"a}nen}, Pauli and {Usoskin}, Ilya and {Mursula}, Kalevi},
        title = "Long-term evolution of the power-law spectrum of galactic cosmic rays in 1953-2016",
    booktitle = {EGU General Assembly Conference Abstracts},
         year = 2018,
       series = {EGU General Assembly Conference Abstracts},
        pages = {6021},
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@INPROCEEDINGS{2018EGUGA..20.4376K,
       author = {{Koldobsky}, Sergey and {Kovaltsov}, Gennady and {Usoskin}, Ilya},
        title = "Effective energy of solar energetic particles causing a ground-level enhancement",
    booktitle = {EGU General Assembly Conference Abstracts},
         year = 2018,
       series = {EGU General Assembly Conference Abstracts},
        pages = {4376},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2018EGUGA..20.4376K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2018EGUGA..20.4306U,
       author = {{Usoskin}, Ilya},
        title = "Extreme Solar Particle Storms: How hostile can the Sun be?",
    booktitle = {EGU General Assembly Conference Abstracts},
         year = 2018,
       series = {EGU General Assembly Conference Abstracts},
        pages = {4306},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2018EGUGA..20.4306U},
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@ARTICLE{2018ApJ...853...80A,
       author = {{Acero}, F.~J. and {Gallego}, M.~C. and {Garc{\'\i}a}, J.~A. and {Usoskin}, I.~G. and {Vaquero}, J.~M.},
        title = "Extreme Value Theory Applied to the Millennial Sunspot Number Series",
      journal = {\apj},
         year = 2018,
       volume = {853},
       number = {1},
          eid = {80},
        pages = {80},
          doi = {10.3847/1538-4357/aaa406},
archivePrefix = {arXiv},
       eprint = {1801.09776},
 primaryClass = {astro-ph.SR},
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@ARTICLE{2018ARep...62...72K,
       author = {{Katsova}, M.~M. and {Kitchatinov}, L.~L. and {Livshits}, M.~A. and {Moss}, D.~L. and {Sokoloff}, D.~D. and {Usoskin}, I.~G.},
        title = "Can Superflares Occur on the Sun? A View from Dynamo Theory",
      journal = {Astronomy Reports},
         year = 2018,
       volume = {62},
       number = {1},
        pages = {72-80},
          doi = {10.1134/S106377291801002X},
archivePrefix = {arXiv},
       eprint = {1710.00015},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2018ARep...62...72K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2017JSWSC...7A..33O,
       author = {{Owens}, Mathew J. and {Lockwood}, Mike and {Hawkins}, Ed and {Usoskin}, Ilya and {Jones}, Gareth S. and {Barnard}, Luke and {Schurer}, Andrew and {Fasullo}, John},
        title = "The Maunder minimum and the Little Ice Age: an update from recent reconstructions and climate simulations",
      journal = {Journal of Space Weather and Space Climate},
         year = 2017,
       volume = {7},
          eid = {A33},
        pages = {A33},
          doi = {10.1051/swsc/2017034},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2017JSWSC...7A..33O},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2017AGUFMSH42A..03W,
       author = {{Wu}, C.~J. and {Usoskin}, I.~G. and {Krivova}, N. and {Kovaltsov}, G. and {Solanki}, S.~K.},
        title = "Solar Spectral Irradiance Reconstruction over 9 Millennia from a Composite 14C and 10Be Series",
    booktitle = {AGU abstracts},
         year = 2017,
       volume = {2017},
          eid = {SH42A-03},
        pages = {SH42A-03},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2017AGUFMSH42A..03W},
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@ARTICLE{2017SoPh..292..176P,
       author = {{Poluianov}, S.~V. and {Usoskin}, I.~G. and {Mishev}, A.~L. and {Shea}, M.~A. and {Smart}, D.~F.},
        title = "GLE and Sub-GLE Redefinition in the Light of High-Altitude Polar Neutron Monitors",
      journal = {\solphys},
         year = 2017,
       volume = {292},
       number = {11},
          eid = {176},
        pages = {176},
          doi = {10.1007/s11207-017-1202-4},
archivePrefix = {arXiv},
       eprint = {1711.06161},
 primaryClass = {physics.space-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2017SoPh..292..176P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2017JSWSC...7A..28M,
       author = {{Mishev}, Alexander and {Poluianov}, Stepan and {Usoskin}, Ilya},
        title = "Assessment of spectral and angular characteristics of sub-GLE events using the global neutron monitor network",
      journal = {Journal of Space Weather and Space Climate},
         year = 2017,
       volume = {7},
          eid = {A28},
        pages = {A28},
          doi = {10.1051/swsc/2017026},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2017JSWSC...7A..28M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2017JGRA..122.9790A,
       author = {{Asvestari}, Eleanna and {Gil}, Agnieszka and {Kovaltsov}, Gennady A. and {Usoskin}, Ilya G.},
        title = "Neutron Monitors and Cosmogenic Isotopes as Cosmic Ray Energy-Integration Detectors: Effective Yield Functions, Effective Energy, and Its Dependence on the Local Interstellar Spectrum",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2017,
       volume = {122},
       number = {10},
        pages = {9790-9802},
          doi = {10.1002/2017JA024469},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2017JGRA..122.9790A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2017AdSpR..60..781A,
       author = {{Asvestari}, E. and {Willamo}, T. and {Gil}, A. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A. and {Mikhailov}, V.~V. and {Mayorov}, A.},
        title = "Analysis of Ground Level Enhancements (GLE): Extreme solar energetic particle events have hard spectra",
      journal = {Advances in Space Research},
         year = 2017,
       volume = {60},
       number = {4},
        pages = {781-787},
          doi = {10.1016/j.asr.2016.08.043},
archivePrefix = {arXiv},
       eprint = {1612.02446},
 primaryClass = {physics.space-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2017AdSpR..60..781A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2017A&A...602A..69C,
       author = {{Chatzistergos}, Theodosios and {Usoskin}, Ilya G. and {Kovaltsov}, Gennady A. and {Krivova}, Natalie A. and {Solanki}, Sami K.},
        title = "New reconstruction of the sunspot group numbers since 1739 using direct calibration and ``backbone'' methods",
      journal = {\aap},
         year = 2017,
       volume = {602},
          eid = {A69},
        pages = {A69},
          doi = {10.1051/0004-6361/201630045},
archivePrefix = {arXiv},
       eprint = {1702.06183},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2017A&A...602A..69C},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2017MNRAS.467.1608A,
       author = {{Asvestari}, Eleanna and {Usoskin}, Ilya G. and {Kovaltsov}, Gennady A. and {Owens}, Mathew J. and {Krivova}, Natalie A. and {Rubinetti}, Sara and {Taricco}, Carla},
        title = "Assessment of different sunspot number series using the cosmogenic isotope $^{44}$Ti in meteorites",
      journal = {\mnras},
         year = 2017,
       volume = {467},
       number = {2},
        pages = {1608-1613},
          doi = {10.1093/mnras/stx190},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2017MNRAS.467.1608A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2017A&A...601A.109W,
       author = {{Willamo}, T. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "Updated sunspot group number reconstruction for 1749-1996 using the active day fraction method",
      journal = {\aap},
         year = 2017,
       volume = {601},
          eid = {A109},
        pages = {A109},
          doi = {10.1051/0004-6361/201629839},
archivePrefix = {arXiv},
       eprint = {1705.05109},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2017A&A...601A.109W},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2017JGRA..122.3875U,
       author = {{Usoskin}, Ilya G. and {Gil}, Agnieszka and {Kovaltsov}, Gennady A. and {Mishev}, Alexander L. and {Mikhailov}, Vladimir V.},
        title = "Heliospheric modulation of cosmic rays during the neutron monitor era: Calibration using PAMELA data for 2006-2010",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2017,
       volume = {122},
       number = {4},
        pages = {3875-3887},
          doi = {10.1002/2016JA023819},
archivePrefix = {arXiv},
       eprint = {1705.07197},
 primaryClass = {physics.space-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2017JGRA..122.3875U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2017ApJ...839...79K,
       author = {{Kocharov}, Leon and {Pohjolainen}, Silja and {Mishev}, Alexander and {Reiner}, Mike J. and {Lee}, Jeongwoo and {Laitinen}, Timo and {Didkovsky}, Leonid V. and {Pizzo}, Victor J. and {Kim}, Roksoon and {Klassen}, Andreas and {Karlicky}, Marian and {Cho}, Kyung-Suk and {Gary}, Dale E. and {Usoskin}, Ilya and {Valtonen}, Eino and {Vainio}, Rami},
        title = "Investigating the Origins of Two Extreme Solar Particle Events: Proton Source Profile and Associated Electromagnetic Emissions",
      journal = {\apj},
         year = 2017,
       volume = {839},
       number = {2},
          eid = {79},
        pages = {79},
          doi = {10.3847/1538-4357/aa6a13},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2017ApJ...839...79K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2017yCat..36010109W,
       author = {{Willamo}, T. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "VizieR Online Data Catalog: Monthly numbers of sunspot groups 1749-1996 (Willamo+, 2017)",
      journal = {VizieR Online Data Catalog},
         year = 2017,
          eid = {J/A+A/601/A109},
        pages = {J/A+A/601/A109},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2017yCat..36010109W},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2017yCat..36010109U,
       author = {{Usoskin}, I.~G. and {Gallet}, Y. and {Lopes}, F. and {Kovaltsov}, G.~A. and {Hulot}, G. and {Willamo}, T. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "VizieR Online Data Catalog: Monthly numbers of sunspot groups 1749-1996 (Usoskin+, 2017)",
      journal = {VizieR Online Data Catalog},
         year = 2017,
          eid = {J/A+A/601/A109},
        pages = {J/A+A/601/A109},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2017yCat..36010109U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2017LRSP...14....3U,
       author = {{Usoskin}, Ilya G.},
        title = "A history of solar activity over millennia",
      journal = {Liv.\ Rev.\ Solar Phys.},
         year = 2017,
       volume = {14},
       number = {1},
          eid = {3},
        pages = {3},
          doi = {10.1007/s41116-017-0006-9},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2017LRSP...14....3U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2017A&A...599A.131L,
       author = {{Leussu}, R. and {Usoskin}, I.~G. and {Senthamizh Pavai}, V. and {Diercke}, A. and {Arlt}, R. and {Denker}, C. and {Mursula}, K.},
        title = "Wings of the butterfly: Sunspot groups for 1826-2015",
      journal = {\aap},
         year = 2017,
       volume = {599},
          eid = {A131},
        pages = {A131},
          doi = {10.1051/0004-6361/201629533},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2017A&A...599A.131L},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2017yCat..36020069C,
       author = {{Chatzistergos}, T. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A. and {Krivova}, N.~A. and {Solanki}, S.~K.},
        title = "VizieR Online Data Catalog: Group sunspot number series since 1739 (Chatzistergos+, 2017)",
      journal = {VizieR Online Data Catalog},
         year = 2017,
          eid = {J/A+A/602/A69},
        pages = {J/A+A/602/A69},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2017yCat..36020069C},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2017SoPh..292...15U,
       author = {{Usoskin}, I.~G. and {Kovaltsov}, G.~A. and {Mishina}, L.~N. and {Sokoloff}, D.~D. and {Vaquero}, J.},
        title = "An Optical Atmospheric Phenomenon Observed in 1670 over the City of Astrakhan Was Not a Mid-Latitude Aurora",
      journal = {\solphys},
         year = 2017,
       volume = {292},
       number = {1},
          eid = {15},
        pages = {15},
          doi = {10.1007/s11207-016-1035-6},
archivePrefix = {arXiv},
       eprint = {1612.00705},
 primaryClass = {physics.ao-ph},
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      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2017ICRC...35..147M,
       author = {{Mishev}, A. and {Usoskin}, I. and {Kocharov}, L.},
        title = "Using global neutron monitor network data for GLE analysis: recent results",
    booktitle = {35th International Cosmic Ray Conference (ICRC2017)},
         year = 2017,
       series = {International Cosmic Ray Conference},
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@INPROCEEDINGS{2017ICRC...35..146M,
       author = {{Mishev}, A. and {Kocharov}, L. and {Pohjolainen}, S. and {Reiner}, M.~J. and {Lee}, J. and {Laitinen}, T. and {Didkovsky}, L.~V. and {Pizzo}, V.~J. and {Kim}, R. and {Klassen}, A. and {Karlicky}, M. and {Choj}, K.~S. and {Kovaltsov}, G.~A. and {Usoskin}, I.~G. and {Valtonen}, E. and {Vainio}, R.},
        title = "Origin of two extreme solar particle events",
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@INPROCEEDINGS{2017ICRC...35..127U,
       author = {{Usoskin}, I.},
        title = "Extreme solar particle events: Can we assess the worst case scenario?",
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       series = {International Cosmic Ray Conference},
       volume = {301},
          eid = {127},
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@INPROCEEDINGS{2017ICRC...35..126U,
       author = {{Usoskin}, I. and {Asvestari}, E. and {Willamo}, T. and {Gil}, A. and {Kovaltsov}, G. and {Mikhailov}, V. and {Mayorov}, A.},
        title = "Analysis of Ground-Level Enhancements: Strong events are hard",
    booktitle = {35th International Cosmic Ray Conference (ICRC2017)},
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       series = {International Cosmic Ray Conference},
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@INPROCEEDINGS{2017ICRC...35..125P,
       author = {{Poluianov}, S. and {Usoskin}, I. and {Mishev}, A. and {Smart}, D.~F. and {Shea}, M.~A.},
        title = "Revisited definition of GLE",
    booktitle = {35th International Cosmic Ray Conference (ICRC2017)},
         year = 2017,
       series = {International Cosmic Ray Conference},
       volume = {301},
          eid = {125},
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@INPROCEEDINGS{2017ICRC...35..124P,
       author = {{Poluianov}, S. and {Kovaltsov}, G. and {Mishev}, A. and {Usoskin}, I.},
        title = "Cosmogenic isotopes Be-7, Be-10, C-14, Na-22 and Cl-36 in the atmosphere: Altitudinal profiles of yield functions",
    booktitle = {35th International Cosmic Ray Conference (ICRC2017)},
         year = 2017,
       series = {International Cosmic Ray Conference},
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@INPROCEEDINGS{2017ICRC...35..123P,
       author = {{Poluianov}, S. and {Kovaltsov}, G. and {Usoskin}, I.},
        title = "The energetic particle intensity estimated from cosmogenic isotope Al-26 produced in lunar samples",
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         year = 2017,
       series = {International Cosmic Ray Conference},
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@INPROCEEDINGS{2017ICRC...35...86M,
       author = {{Mishev}, A. and {Artamonov}, A. and {Kovaltsov}, G. and {Mironova}, I. and {Usoskin}, I.},
        title = "Computation of electron precipitation atmospheric ionization: updated model CRAC-EPII",
    booktitle = {35th International Cosmic Ray Conference (ICRC2017)},
         year = 2017,
       series = {International Cosmic Ray Conference},
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@INPROCEEDINGS{2017ICRC...35...79M,
       author = {{Mishev}, A. and {Artamonov}, A. and {Kovalstov}, G. and {Usoskin}, I.},
        title = "Updated model CRAC:HEPII of atmospheric ionization due to high energy protons",
    booktitle = {35th International Cosmic Ray Conference (ICRC2017)},
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@INPROCEEDINGS{2017ICRC...35...32G,
       author = {{Gil}, A. and {Asvestari}, E. and {Kovaltsov}, G. and {Usoskin}, I.},
        title = "Heliospheric modulation of galactic cosmic rays: Effective energy of ground-based detectors",
    booktitle = {35th International Cosmic Ray Conference (ICRC2017)},
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@ARTICLE{2016arXiv161207043M,
       author = {{Mishev}, A. and {Usoskin}, I.},
        title = "Application of a full chain analysis using neutron monitor data for space weather studies",
      journal = {arXiv e-prints},
         year = 2016,
          eid = {arXiv:1612.07043},
        pages = {arXiv:1612.07043},
archivePrefix = {arXiv},
       eprint = {1612.07043},
 primaryClass = {astro-ph.HE},
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@ARTICLE{2016SoPh..291.3793U,
       author = {{Usoskin}, I.~G. and {Kovaltsov}, G.~A. and {Chatzistergos}, T.},
        title = "Dependence of the Sunspot-Group Size on the Level of Solar Activity and its Influence on the Calibration of Solar Observers",
      journal = {\solphys},
         year = 2016,
       volume = {291},
       number = {12},
        pages = {3793-3805},
          doi = {10.1007/s11207-016-0993-z},
archivePrefix = {arXiv},
       eprint = {1609.00569},
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@INPROCEEDINGS{2016AGUFMSH31B2547C,
       author = {{Chatzistergos}, T. and {Usoskin}, I.~G. and {Kovaltsov}, G. and {Solanki}, S.~K. and {Krivova}, N.},
        title = "Non-linear re-calibration of group sunspot number series back to 1819",
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@INPROCEEDINGS{2016AGUFMSA51B2430W,
       author = {{Wu}, C.~J. and {Krivova}, N. and {Solanki}, S.~K. and {Usoskin}, I.~G.},
        title = "Solar Total and Spectral Irradiance Reconstruction over Last 9000 Years",
    booktitle = {AGU abstracts},
         year = 2016,
          eid = {SA51B-2430},
        pages = {SA51B-2430},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016AGUFMSA51B2430W},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2016yCat..35990131L,
       author = {{Leussu}, R. and {Usoskin}, I.~G. and {Senthamizh Pavai}, V. and {Diercke}, A. and {Arlt}, R. and {Mursula}, K.},
        title = "VizieR Online Data Catalog: Butterfly diagram wings (Leussu+, 2017)",
      journal = {VizieR Online Data Catalog},
         year = 2016,
          eid = {J/A+A/599/A131},
        pages = {J/A+A/599/A131},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016yCat..35990131L},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2016SoPh..291.2829L,
       author = {{Lockwood}, M. and {Owens}, M.~J. and {Barnard}, L. and {Usoskin}, I.~G.},
        title = "Tests of Sunspot Number Sequences: 3. Effects of Regression Procedures on the Calibration of Historic Sunspot Data",
      journal = {\solphys},
         year = 2016,
       volume = {291},
       number = {9-10},
        pages = {2829-2841},
          doi = {10.1007/s11207-015-0829-2},
archivePrefix = {arXiv},
       eprint = {1510.07809},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016SoPh..291.2829L},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2016SoPh..291.2811L,
       author = {{Lockwood}, M. and {Owens}, M.~J. and {Barnard}, L. and {Scott}, C.~J. and {Usoskin}, I.~G. and {Nevanlinna}, H.},
        title = "Tests of Sunspot Number Sequences: 2. Using Geomagnetic and Auroral Data",
      journal = {\solphys},
         year = 2016,
       volume = {291},
       number = {9-10},
        pages = {2811-2828},
          doi = {10.1007/s11207-016-0913-2},
archivePrefix = {arXiv},
       eprint = {1605.01948},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016SoPh..291.2811L},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2016SoPh..291.2685U,
       author = {{Usoskin}, I.~G. and {Kovaltsov}, G.~A. and {Lockwood}, M. and {Mursula}, K. and {Owens}, M. and {Solanki}, S.~K.},
        title = "A New Calibrated Sunspot Group Series Since 1749: Statistics of Active Day Fractions",
      journal = {\solphys},
         year = 2016,
       volume = {291},
       number = {9-10},
        pages = {2685-2708},
          doi = {10.1007/s11207-015-0838-1},
archivePrefix = {arXiv},
       eprint = {1512.06421},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016SoPh..291.2685U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2016JASTP.149..161A,
       author = {{Artamonov}, A.~A. and {Mishev}, A.~L. and {Usoskin}, I.~G.},
        title = "Atmospheric ionization induced by precipitating electrons: Comparison of CRAC:EPII model with a parametrization model",
      journal = {Journal of Atmospheric and Solar-Terrestrial Physics},
         year = 2016,
       volume = {149},
        pages = {161-166},
          doi = {10.1016/j.jastp.2016.04.020},
archivePrefix = {arXiv},
       eprint = {1601.05910},
 primaryClass = {astro-ph.EP},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016JASTP.149..161A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2016JASTP.149...87Y,
       author = {{Yaniv}, Roy and {Yair}, Yoav and {Price}, Colin and {Nicoll}, Keri and {Harrison}, Giles and {Artamonov}, Anton and {Usoskin}, Ilya},
        title = "Balloon measurements of the vertical ionization profile over southern Israel and comparison to mid-latitude observations",
      journal = {Journal of Atmospheric and Solar-Terrestrial Physics},
         year = 2016,
       volume = {149},
        pages = {87-92},
          doi = {10.1016/j.jastp.2016.10.003},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016JASTP.149...87Y},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2016ESRv..159..462S,
       author = {{Soon}, Willie and {Velasco Herrera}, Victor M. and {Selvaraj}, Kandasamy and {Traversi}, Rita and {Usoskin}, Ilya and {Arthur Chen}, Chen-Tung and {Lou}, Jiann-Yuh and {Kao}, Shuh-Ji and {Carter}, Robert M. and {Pipin}, Valery and {Severi}, Mirko and {Becagli}, Silvia},
        title = "Corrigendum to 'A review of Holocene solar-linked climatic variation on centennial to millennial timescales: Physical processes, interpretative frameworks and a new multiple cross-wavelet transform algorithm' Earth Sci. Rev. 134 [1-15]",
      journal = {Earth Science Reviews},
         year = 2016,
       volume = {159},
        pages = {462-462},
          doi = {10.1016/j.earscirev.2016.05.008},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016ESRv..159..462S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2016A&A...592A.160L,
       author = {{Leussu}, Raisa and {Usoskin}, Ilya G. and {Arlt}, Rainer and {Mursula}, Kalevi},
        title = "Properties of sunspot cycles and hemispheric wings since the 19th century",
      journal = {\aap},
         year = 2016,
       volume = {592},
          eid = {A160},
        pages = {A160},
          doi = {10.1051/0004-6361/201628335},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016A&A...592A.160L},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2016cosp...41E2072W,
       author = {{Wu}, Chi-Ju and {Usoskin}, Ilya and {Krivova}, Natalie and {Solanki}, Sami K.},
        title = "Solar total and spectral irradiance reconstruction over last 9000 years",
    booktitle = {41st COSPAR Scientific Assembly},
         year = 2016,
       volume = {41},
          eid = {D2.5-12-16},
        pages = {D2.5-12-16},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016cosp...41E2072W},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2016cosp...41E1310M,
       author = {{Mishev}, Alexander and {Usoskin}, Ilya},
        title = "Application of the new neutron monitor yield function computed for different altitudes to an analysis of GLEs",
    booktitle = {41st COSPAR Scientific Assembly},
         year = 2016,
       volume = {41},
          eid = {D1.5-5-16},
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       adsurl = {https://ui.adsabs.harvard.edu/abs/2016cosp...41E1310M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2016cosp...41E1309M,
       author = {{Mishev}, Alexander and {Usoskin}, Ilya and {Artamonov}, Anton},
        title = "Modeling impact ionization of precipitating particles in the upper and middle atmosphere",
    booktitle = {41st COSPAR Scientific Assembly},
         year = 2016,
       volume = {41},
          eid = {C3.1-8-16},
        pages = {C3.1-8-16},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016cosp...41E1309M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2016JGRD..121.8125P,
       author = {{Poluianov}, S.~V. and {Kovaltsov}, G.~A. and {Mishev}, A.~L. and {Usoskin}, I.~G.},
        title = "Production of cosmogenic isotopes $^{7}$Be, $^{10}$Be, $^{14}$C, $^{22}$Na, and $^{36}$Cl in the atmosphere: Altitudinal profiles of yield functions",
      journal = {Journal of Geophysical Research (Atmospheres)},
         year = 2016,
       volume = {121},
       number = {13},
        pages = {8125-8136},
          doi = {10.1002/2016JD025034},
archivePrefix = {arXiv},
       eprint = {1606.05899},
 primaryClass = {astro-ph.EP},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016JGRD..121.8125P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2016JGRA..121.6064O,
       author = {{Owens}, M.~J. and {Cliver}, E. and {McCracken}, K.~G. and {Beer}, J. and {Barnard}, L. and {Lockwood}, M. and {Rouillard}, A. and {Passos}, D. and {Riley}, P. and {Usoskin}, I. and {Wang}, Y. -M.},
        title = "Near-Earth heliospheric magnetic field intensity since 1750: 2. Cosmogenic radionuclide reconstructions",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2016,
       volume = {121},
       number = {7},
        pages = {6064-6074},
          doi = {10.1002/2016JA022550},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016JGRA..121.6064O},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2016JGRA..121.6048O,
       author = {{Owens}, M.~J. and {Cliver}, E. and {McCracken}, K.~G. and {Beer}, J. and {Barnard}, L. and {Lockwood}, M. and {Rouillard}, A. and {Passos}, D. and {Riley}, P. and {Usoskin}, I. and {Wang}, Y. -M.},
        title = "Near-Earth heliospheric magnetic field intensity since 1750: 1. Sunspot and geomagnetic reconstructions",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2016,
       volume = {121},
       number = {7},
        pages = {6048-6063},
          doi = {10.1002/2016JA022529},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016JGRA..121.6048O},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2016ApJ...824...54L,
       author = {{Lockwood}, M. and {Owens}, M.~J. and {Barnard}, L. and {Usoskin}, I.~G.},
        title = "An Assessment of Sunspot Number Data Composites over 1845-2014",
      journal = {\apj},
         year = 2016,
       volume = {824},
       number = {1},
          eid = {54},
        pages = {54},
          doi = {10.3847/0004-637X/824/1/54},
archivePrefix = {arXiv},
       eprint = {1604.04538},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016ApJ...824...54L},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2016SoPh..291.1579M,
       author = {{Mishev}, A. and {Usoskin}, I.},
        title = "Erratum: Erratum to: Analysis of the ground level enhancements on 14 July 2000 and on 13 December 2006 using neutron monitor data",
      journal = {\solphys},
         year = 2016,
       volume = {291},
       number = {5},
        pages = {1579-1580},
          doi = {10.1007/s11207-016-0937-7},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016SoPh..291.1579M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2016SoPh..291.1225M,
       author = {{Mishev}, A. and {Usoskin}, I.},
        title = "Analysis of the Ground-Level Enhancements on 14 July 2000 and 13 December 2006 Using Neutron Monitor Data",
      journal = {\solphys},
         year = 2016,
       volume = {291},
       number = {4},
        pages = {1225-1239},
          doi = {10.1007/s11207-016-0877-2},
archivePrefix = {arXiv},
       eprint = {1603.08918},
 primaryClass = {physics.space-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016SoPh..291.1225M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2016EGUGA..18.3898U,
       author = {{Usoskin}, Ilya and {Kovaltsov}, Gennady},
        title = "Extreme solar particle events: The worst case scenario",
    booktitle = {EGU General Assembly Conference Abstracts},
         year = 2016,
       series = {EGU General Assembly Conference Abstracts},
          eid = {EPSC2016-3898},
        pages = {EPSC2016-3898},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016EGUGA..18.3898U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2016ASPC..504..269A,
       author = {{Asvestari}, E. and {Usoskin}, I.~G. and {Cameron}, R.~H. and {Krivova}, N.~A.},
        title = "Semi-empirical Long-term Reconstruction of the Heliospheric Parameters: Validation by Cosmogenic Radionuclide Records",
    booktitle = {Coimbra Solar Physics Meeting: Ground-based Solar Observations in the Space Instrumentation Era},
         year = 2016,
       editor = {{Dorotovic}, I. and {Fischer}, C.~E. and {Temmer}, M.},
       series = {Astron.\ Soc.\ Pacific Conf.\ Ser.},
       volume = {504},
        pages = {269},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016ASPC..504..269A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2016JSWSC...6A..15A,
       author = {{Asvestari}, Eleanna and {Usoskin}, Ilya G.},
        title = "An empirical model of heliospheric cosmic ray modulation on long-term time scale",
      journal = {Journal of Space Weather and Space Climate},
         year = 2016,
       volume = {6},
          eid = {A15},
        pages = {A15},
          doi = {10.1051/swsc/2016011},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016JSWSC...6A..15A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2016A&A...587A.150U,
       author = {{Usoskin}, I.~G. and {Gallet}, Y. and {Lopes}, F. and {Kovaltsov}, G.~A. and {Hulot}, G.},
        title = "Solar activity during the Holocene: the Hallstatt cycle and its consequence for grand minima and maxima",
      journal = {\aap},
         year = 2016,
       volume = {587},
          eid = {A150},
        pages = {A150},
          doi = {10.1051/0004-6361/201527295},
archivePrefix = {arXiv},
       eprint = {1602.02483},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016A&A...587A.150U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2016JGRA..121.1736A,
       author = {{Artamonov}, A.~A. and {Mishev}, A.~L. and {Usoskin}, I.~G.},
        title = "Model CRAC:EPII for atmospheric ionization due to precipitating electrons: Yield function and applications",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2016,
       volume = {121},
       number = {2},
        pages = {1736-1743},
          doi = {10.1002/2015JA022276},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016JGRA..121.1736A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2016yCat..35870150U,
       author = {{Usoskin}, I.~G. and {Gallet}, Y. and {Lopes}, F. and {Kovaltsov}, G.~A. and {Hulot}, G.},
        title = "VizieR Online Data Catalog: Solar activity during the Holocene (Usoskin+, 2016)",
      journal = {VizieR Online Data Catalog},
         year = 2016,
          eid = {J/A+A/587/A150},
        pages = {J/A+A/587/A150},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016yCat..35870150U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2016JGRA..121..117A,
       author = {{Artamonov}, A.~A. and {Kovaltsov}, G.~A. and {Mishev}, A.~L. and {Usoskin}, I.~G.},
        title = "Neutron monitor yield function for solar neutrons: A new computation",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2016,
       volume = {121},
       number = {1},
        pages = {117-128},
          doi = {10.1002/2015JA021993},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2016JGRA..121..117A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2015arXiv151205516U,
       author = {{Usoskin}, I. and {Kovaltsov}, G.},
        title = "A two-wave dynamo model by Zharkova et al. (2015) disagrees with data on long-term solar variability",
      journal = {arXiv e-prints},
         year = 2015,
          eid = {arXiv:1512.05516},
        pages = {arXiv:1512.05516},
archivePrefix = {arXiv},
       eprint = {1512.05516},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015arXiv151205516U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2015JASS...32..281P,
       author = {{Poluianov}, Stepan and {Usoskin}, Ilya and {Mishev}, Alexander and {Moraal}, Harm and {Kruger}, Helena and {Casasanta}, Giampietro and {Traversi}, Rita and {Udisti}, Roberto},
        title = "Mini Neutron Monitors at Concordia Research Station, Central Antarctica",
      journal = {Journal of Astronomy and Space Sciences},
         year = 2015,
       volume = {32},
       number = {4},
        pages = {281-287},
          doi = {10.5140/JASS.2015.32.4.281},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015JASS...32..281P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2015SSRv..194....1M,
       author = {{Mironova}, Irina A. and {Aplin}, Karen L. and {Arnold}, Frank and {Bazilevskaya}, Galina A. and {Harrison}, R. Giles and {Krivolutsky}, Alexei A. and {Nicoll}, Keri A. and {Rozanov}, Eugene V. and {Turunen}, Esa and {Usoskin}, Ilya G.},
        title = "Energetic Particle Influence on the Earth's Atmosphere",
      journal = {\ssr},
         year = 2015,
       volume = {194},
       number = {1-4},
        pages = {1-96},
          doi = {10.1007/s11214-015-0185-4},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015SSRv..194....1M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2015Icar..260..475U,
       author = {{Usoskin}, Ilya G. and {Kovaltsov}, Gennady A.},
        title = "The carbon-14 spike in the 8th century was not caused by a cometary impact on Earth",
      journal = {\icarus},
         year = 2015,
       volume = {260},
        pages = {475-476},
          doi = {10.1016/j.icarus.2014.06.009},
archivePrefix = {arXiv},
       eprint = {1401.5945},
 primaryClass = {astro-ph.EP},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015Icar..260..475U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2015JGRA..120.7172G,
       author = {{Gil}, Agnieszka and {Usoskin}, Ilya G. and {Kovaltsov}, Gennady A. and {Mishev}, Alexander L. and {Corti}, Claudio and {Bindi}, Veronica},
        title = "Can we properly model the neutron monitor count rate?",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2015,
       volume = {120},
       number = {9},
        pages = {7172-7178},
          doi = {10.1002/2015JA021654},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015JGRA..120.7172G},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2015ApJ...811L...9K,
       author = {{Kocharov}, Leon and {Klassen}, Andreas and {Valtonen}, Eino and {Usoskin}, Ilya and {Ryan}, James M.},
        title = "Comparative Morphology of Solar Relativistic Particle Events",
      journal = {\apjl},
         year = 2015,
       volume = {811},
       number = {1},
          eid = {L9},
        pages = {L9},
          doi = {10.1088/2041-8205/811/1/L9},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015ApJ...811L...9K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2015A&A...581A..95U,
       author = {{Usoskin}, Ilya G. and {Arlt}, Rainer and {Asvestari}, Eleanna and {Hawkins}, Ed and {K{\"a}pyl{\"a}}, Maarit and {Kovaltsov}, Gennady A. and {Krivova}, Natalie and {Lockwood}, Michael and {Mursula}, Kalevi and {O'Reilly}, Jezebel and {Owens}, Matthew and {Scott}, Chris J. and {Sokoloff}, Dmitry D. and {Solanki}, Sami K. and {Soon}, Willie and {Vaquero}, Jos{\'e} M.},
        title = "The Maunder minimum (1645-1715) was indeed a grand minimum: A reassessment of multiple datasets",
      journal = {\aap},
         year = 2015,
       volume = {581},
          eid = {A95},
        pages = {A95},
          doi = {10.1051/0004-6361/201526652},
archivePrefix = {arXiv},
       eprint = {1507.05191},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015A&A...581A..95U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2015IAUGA..2253036U,
       author = {{Usoskin}, Ilya and {Arlt}, Rainer and {Asvestari}, Eleanna and {Kovaltsov}, Gennady and {Krivova}, Natalie and {Lockwood}, Michael and {K{\"a}pyl{\"a}}, Maarit and {Owens}, Matthew and {Sokoloff}, Dmitry D. and {Solanki}, Sami and {Soon}, Willie and {Vaquero}, Jose and {Scott}, Chris},
        title = "The Maunder minimum: A reassessment from multiple dataset",
    booktitle = {IAU General Assembly},
         year = 2015,
       volume = {29},
          eid = {2253036},
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       adsurl = {https://ui.adsabs.harvard.edu/abs/2015IAUGA..2253036U},
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@ARTICLE{2015IJAsB..14..375M,
       author = {{Melott}, Adrian L. and {Usoskin}, Ilya G. and {Kovaltsov}, Gennady A. and {Laird}, Claude M.},
        title = "Has the Earth been exposed to numerous supernovae within the last 300 kyr?",
      journal = {International Journal of Astrobiology},
         year = 2015,
       volume = {14},
       number = {3},
        pages = {375-378},
          doi = {10.1017/S1473550414000512},
archivePrefix = {arXiv},
       eprint = {1406.5141},
 primaryClass = {astro-ph.EP},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015IJAsB..14..375M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2015ICRC...34..217U,
       author = {{Usoskin}, I. and {Poluianov}, S. and {Moraal}, H. and {Kr{\"u}ger}, H. and {Casasanta}, G. and {Traversi}, R. and {Udisty}, R.},
        title = "A mini neutron monitor in Central Antarctica (Dome Concordia)",
    booktitle = {34th International Cosmic Ray Conference (ICRC2015)},
         year = 2015,
       series = {International Cosmic Ray Conference},
       volume = {34},
          eid = {217},
        pages = {217},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015ICRC...34..217U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2015ICRC...34..163A,
       author = {{Artamonov}, A. and {Kovaltsov}, G. and {Mishev}, A. Alexander and {Usoskin}, I.},
        title = "Sensitivity of the world-wide neutron monitor network to solar neutrons: A revised approach",
    booktitle = {34th International Cosmic Ray Conference (ICRC2015)},
         year = 2015,
       series = {International Cosmic Ray Conference},
       volume = {34},
          eid = {163},
        pages = {163},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015ICRC...34..163A},
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@INPROCEEDINGS{2015ICRC...34..159M,
       author = {{Mishev}, A. and {Usoskin}, I. and {Kovaltsov}, G.},
        title = "A New neutron monitor yield function computed for different altitudes: Application for a GLE analysis",
    booktitle = {34th International Cosmic Ray Conference (ICRC2015)},
         year = 2015,
       series = {International Cosmic Ray Conference},
       volume = {34},
          eid = {159},
        pages = {159},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015ICRC...34..159M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2015ICRC...34..158M,
       author = {{Mishev}, A. and {Usoskin}, I.},
        title = "Effective dose calculation at flight altitudes with the newly computed yield function",
    booktitle = {34th International Cosmic Ray Conference (ICRC2015)},
         year = 2015,
       series = {International Cosmic Ray Conference},
       volume = {34},
          eid = {158},
        pages = {158},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015ICRC...34..158M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2015ICRC...34...57K,
       author = {{Kocharov}, L. and {Klassen}, A. and {Usoskin}, I. and {Valtonen}, E.},
        title = "Resolving multiple sources of solar relativistic particles",
    booktitle = {34th International Cosmic Ray Conference (ICRC2015)},
         year = 2015,
       series = {International Cosmic Ray Conference},
       volume = {34},
          eid = {57},
        pages = {57},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015ICRC...34...57K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2015ICRC...34...54U,
       author = {{Usoskin}, I. and {Ibragimov}, A. and {Shea}, M.~A. and {Smart}, D.~F.},
        title = "Database of Ground Level Enhancements (GLE) of High Energy Solar Proton Events",
    booktitle = {34th International Cosmic Ray Conference (ICRC2015)},
         year = 2015,
       series = {International Cosmic Ray Conference},
       volume = {34},
          eid = {54},
        pages = {54},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015ICRC...34...54U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2015ICRC...34...53A,
       author = {{Asvestari}, E. and {Usoskin}, I. and {Kovaltsov}, G.},
        title = "Use of cosmogenic radionuclides 14C and 10Be to verify empirically reconstructed cosmic ray modulation since 1616",
    booktitle = {34th International Cosmic Ray Conference (ICRC2015)},
         year = 2015,
       series = {International Cosmic Ray Conference},
       volume = {34},
          eid = {53},
        pages = {53},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015ICRC...34...53A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2015ICRC...34...51P,
       author = {{Poluianov}, S. and {Artamonov}, A. and {Kovaltsov}, G. and {Usoskin}, I.},
        title = "Flux of solar energetic particles in the distant past: Data from lunar rocks",
    booktitle = {34th International Cosmic Ray Conference (ICRC2015)},
         year = 2015,
       series = {International Cosmic Ray Conference},
       volume = {34},
          eid = {51},
        pages = {51},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015ICRC...34...51P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2015ICRC...34...18U,
       author = {{Usoskin}, I. and {Kovaltsov}, G. and {Cliver}, E. and {Dietrich}, W.~F. and {Tylka}, A.},
        title = "Assessment of F200 fluence for major solar energetic particle events on the multi-millennial time scale",
    booktitle = {34th International Cosmic Ray Conference (ICRC2015)},
         year = 2015,
       series = {International Cosmic Ray Conference},
       volume = {34},
          eid = {18},
        pages = {18},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015ICRC...34...18U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2015ApJ...805L..14Z,
       author = {{Zaqarashvili}, Teimuraz V. and {Oliver}, Ram{\'{o}}n and {Hanslmeier}, Arnold and {Carbonell}, Marc and {Ballester}, Jose Luis and {Gachechiladze}, Tamar and {Usoskin}, Ilya G.},
        title = "Long-term variation in the Sun's activity caused by magnetic Rossby waves in the tachocline",
      journal = {\apjl},
         year = 2015,
       volume = {805},
       number = {2},
          eid = {L14},
        pages = {L14},
          doi = {10.1088/2041-8205/805/2/L14},
archivePrefix = {arXiv},
       eprint = {1505.02652},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015ApJ...805L..14Z},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2015AdSpR..55.2940U,
       author = {{Usoskin}, I.~G. and {Kovaltsov}, G.~A. and {Adriani}, O. and {Barbarino}, G.~C. and {Bazilevskaya}, G.~A. and {Bellotti}, R. and {Boezio}, M. and {Bogomolov}, E.~A. and {Bongi}, M. and {Bonvicini}, V. and {Bottai}, S. and {Bruno}, A. and {Cafagna}, F. and {Campana}, D. and {Carbone}, R. and {Carlson}, P. and {Casolino}, M. and {Castellini}, G. and {De Donato}, C. and {De Santis}, C. and {De Simone}, N. and {Di Felice}, V. and {Formato}, V. and {Galper}, A.~M. and {Karelin}, A.~V. and {Koldashov}, S.~V. and {Koldobskiy}, S. and {Krutkov}, S.~Y. and {Kvashnin}, A.~N. and {Leonov}, A. and {Malakhov}, V. and {Marcelli}, L. and {Martucci}, M. and {Mayorov}, A.~G. and {Menn}, W. and {Merg{\'e}}, M. and {Mikhailov}, V.~V. and {Mocchiutti}, E. and {Monaco}, A. and {Mori}, N. and {Munini}, R. and {Osteria}, G. and {Palma}, F. and {Panico}, B. and {Papini}, P. and {Pearce}, M. and {Picozza}, P. and {Pizzolotto}, C. and {Ricci}, M. and {Ricciarini}, S.~B. and {Rossetto}, L. and {Sarkar}, R. and {Scotti}, V. and {Simon}, M. and {Sparvoli}, R. and {Spillantini}, P. and {Stozhkov}, Y.~I. and {Vacchi}, A. and {Vannuccini}, E. and {Vasilyev}, G.~I. and {Voronov}, S.~A. and {Yurkin}, Y.~T. and {Zampa}, G. and {Zampa}, N. and {Zverev}, V.~G.},
        title = "Force-field parameterization of the galactic cosmic ray spectrum: Validation for Forbush decreases",
      journal = {Advances in Space Research},
         year = 2015,
       volume = {55},
       number = {12},
        pages = {2940-2945},
          doi = {10.1016/j.asr.2015.03.009},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015AdSpR..55.2940U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2015JSWSC...5A..10M,
       author = {{Mishev}, Alexander and {Usoskin}, Ilya},
        title = "Numerical model for computation of effective and ambient dose equivalent at flight altitudes. Application for dose assessment during GLEs",
      journal = {Journal of Space Weather and Space Climate},
         year = 2015,
       volume = {5},
          eid = {A10},
        pages = {A10},
          doi = {10.1051/swsc/2015011},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015JSWSC...5A..10M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2015A&A...577A..71V,
       author = {{Vaquero}, J.~M. and {Kovaltsov}, G.~A. and {Usoskin}, I.~G. and {Carrasco}, V.~M.~S. and {Gallego}, M.~C.},
        title = "Level and length of cyclic solar activity during the Maunder minimum as deduced from the active-day statistics",
      journal = {\aap},
         year = 2015,
       volume = {577},
          eid = {A71},
        pages = {A71},
          doi = {10.1051/0004-6361/201525962},
archivePrefix = {arXiv},
       eprint = {1503.07664},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015A&A...577A..71V},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2015GeoRL..42.2759F,
       author = {{Fournier}, Alexandre and {Gallet}, Yves and {Usoskin}, Ilya and {Livermore}, Philip W. and {Kovaltsov}, Gennady A.},
        title = "The impact of geomagnetic spikes on the production rates of cosmogenic $^{14}$C and $^{10}$Be in the Earth's atmosphere",
      journal = {\grl},
         year = 2015,
       volume = {42},
       number = {8},
        pages = {2759-2766},
          doi = {10.1002/2015GL063461},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015GeoRL..42.2759F},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2015ApJ...802..105R,
       author = {{Riley}, Pete and {Lionello}, Roberto and {Linker}, Jon A. and {Cliver}, Ed and {Balogh}, Andre and {Beer}, J{\"u}rg and {Charbonneau}, Paul and {Crooker}, Nancy and {DeRosa}, Marc and {Lockwood}, Mike and {Owens}, Matt and {McCracken}, Ken and {Usoskin}, Ilya and {Koutchmy}, S.},
        title = "Inferring the Structure of the Solar Corona and Inner Heliosphere During the Maunder Minimum Using Global Thermodynamic Magnetohydrodynamic Simulations",
      journal = {\apj},
         year = 2015,
       volume = {802},
       number = {2},
          eid = {105},
        pages = {105},
          doi = {10.1088/0004-637X/802/2/105},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015ApJ...802..105R},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2015SoPh..290..943P,
       author = {{Pacini}, A.~A. and {Usoskin}, I.~G.},
        title = "An Unusual Pattern of Cosmic-Ray Modulation During Solar Cycles 23 and 24",
      journal = {\solphys},
         year = 2015,
       volume = {290},
       number = {3},
        pages = {943-950},
          doi = {10.1007/s11207-014-0645-0},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015SoPh..290..943P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2015A&A...575L...2Z,
       author = {{Zhang}, L. and {Mursula}, K. and {Usoskin}, I.},
        title = "Solar surface rotation: N-S asymmetry and recent speed-up",
      journal = {\aap},
         year = 2015,
       volume = {575},
          eid = {L2},
        pages = {L2},
          doi = {10.1051/0004-6361/201425169},
archivePrefix = {arXiv},
       eprint = {1501.02698},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015A&A...575L...2Z},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INCOLLECTION{2015sac..book..409B,
       author = {{Bazilevskaya}, Galina A. and {Cliver}, Edward W. and {Kovaltsov}, Gennady A. and {Ling}, Alan G. and {Shea}, M.~A. and {Smart}, D.~F. and {Usoskin}, Ilya G.},
        title = "Solar Cycle in the Heliosphere and Cosmic Rays",
    booktitle = {The Solar Activity Cycle},
         year = 2015,
       editor = {{Balogh}, Andr{\'e} and {Hudson}, Hugh and {Petrovay}, Krist{\'o}f and {von Steiger}, Rudolf},
       volume = {53},
        pages = {409},
          doi = {10.1007/978-1-4939-2584-1\_14},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015sac..book..409B},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2015AdSpR..55..354M,
       author = {{Mishev}, A.~L. and {Adibpour}, F. and {Usoskin}, I.~G. and {Felsberger}, E.},
        title = "Computation of dose rate at flight altitudes during ground level enhancements no. 69, 70 and 71",
      journal = {Advances in Space Research},
         year = 2015,
       volume = {55},
       number = {1},
        pages = {354-362},
          doi = {10.1016/j.asr.2014.06.020},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015AdSpR..55..354M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2014SoPh..289.4701P,
       author = {{Poluianov}, S.~V. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "Cosmogenic Isotope Variability During the Maunder Minimum: Normal 11-year Cycles Are Expected",
      journal = {\solphys},
         year = 2014,
       volume = {289},
       number = {12},
        pages = {4701-4709},
          doi = {10.1007/s11207-014-0587-6},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2014SoPh..289.4701P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2014SoPh..289.4691K,
       author = {{Kovaltsov}, G.~A. and {Usoskin}, I.~G. and {Cliver}, E.~W. and {Dietrich}, W.~F. and {Tylka}, A.~J.},
        title = "Fluence Ordering of Solar Energetic Proton Events Using Cosmogenic Radionuclide Data",
      journal = {\solphys},
         year = 2014,
       volume = {289},
       number = {12},
        pages = {4691-4700},
          doi = {10.1007/s11207-014-0606-7},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2014SoPh..289.4691K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2014SSRv..186..409B,
       author = {{Bazilevskaya}, Galina A. and {Cliver}, Edward W. and {Kovaltsov}, Gennady A. and {Ling}, Alan G. and {Shea}, M.~A. and {Smart}, D.~F. and {Usoskin}, Ilya G.},
        title = "Solar Cycle in the Heliosphere and Cosmic Rays",
      journal = {\ssr},
         year = 2014,
       volume = {186},
       number = {1-4},
        pages = {409-435},
          doi = {10.1007/s11214-014-0084-0},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2014SSRv..186..409B},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2014JASTP.121...50P,
       author = {{Poluianov}, S. and {Traversi}, R. and {Usoskin}, I.},
        title = "Cosmogenic production and climate contributions to nitrate record in the TALDICE Antarctic ice core",
      journal = {Journal of Atmospheric and Solar-Terrestrial Physics},
         year = 2014,
       volume = {121},
        pages = {50-58},
          doi = {10.1016/j.jastp.2014.09.011},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2014JASTP.121...50P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2014A&A...570A...5A,
       author = {{Agueda}, N. and {Klein}, K. -L. and {Vilmer}, N. and {Rodr{\'\i}guez-Gas{\'e}n}, R. and {Malandraki}, O.~E. and {Papaioannou}, A. and {Subir{\`a}}, M. and {Sanahuja}, B. and {Valtonen}, E. and {Dr{\"o}ge}, W. and {Nindos}, A. and {Heber}, B. and {Braune}, S. and {Usoskin}, I.~G. and {Heynderickx}, D. and {Talew}, E. and {Vainio}, R.},
        title = "Release timescales of solar energetic particles in the low corona",
      journal = {\aap},
         year = 2014,
       volume = {570},
          eid = {A5},
        pages = {A5},
          doi = {10.1051/0004-6361/201423549},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2014A&A...570A...5A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2014ESRv..134....1S,
       author = {{Soon}, Willie and {Velasco Herrera}, Victor M. and {Selvaraj}, Kandasamy and {Traversi}, Rita and {Usoskin}, Ilya and {Chen}, Chen-Tung Arthur and {Lou}, Jiann-Yuh and {Kao}, Shuh-Ji and {Carter}, Robert M. and {Pipin}, Valery and {Severi}, Mirko and {Becagli}, Silvia},
        title = "A review of Holocene solar-linked climatic variation on centennial to millennial timescales: Physical processes, interpretative frameworks and a new multiple cross-wavelet transform algorithm",
      journal = {Earth Science Reviews},
         year = 2014,
       volume = {134},
        pages = {1-15},
          doi = {10.1016/j.earscirev.2014.03.003},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2014ESRv..134....1S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2014SoPh..289.2333P,
       author = {{Poluianov}, S. and {Usoskin}, I.},
        title = "Critical Analysis of a Hypothesis of the Planetary Tidal Influence on Solar Activity",
      journal = {\solphys},
         year = 2014,
       volume = {289},
       number = {6},
        pages = {2333-2342},
          doi = {10.1007/s11207-014-0475-0},
archivePrefix = {arXiv},
       eprint = {1401.3547},
 primaryClass = {astro-ph.EP},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2014SoPh..289.2333P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2014ApJ...787L..21K,
       author = {{Kocharov}, Leon and {Laitinen}, Timo and {Usoskin}, Ilya and {Vainio}, Rami},
        title = "Transmission and Emission of Solar Energetic Particles in Semi-transparent Shocks",
      journal = {\apjl},
         year = 2014,
       volume = {787},
       number = {2},
          eid = {L21},
        pages = {L21},
          doi = {10.1088/2041-8205/787/2/L21},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2014ApJ...787L..21K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2014yCat..35629010U,
       author = {{Usoskin}, I.~G. and {Hulot}, G. and {Gallet}, Y. and {Roth}, R. and {Licht}, A. and {Joos}, F. and {Kovaltsov}, G.~A. and {Thebault}, E. and {Khokhlov}, A.},
        title = "VizieR Online Data Catalog: Solar activity reconstructed for 3 millennia (Usoskin+, 2014)",
      journal = {VizieR Online Data Catalog},
         year = 2014,
          eid = {J/A+A/562/L10},
        pages = {J/A+A/562/L10},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2014yCat..35629010U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2014JGRA..119..670M,
       author = {{Mishev}, A.~L. and {Kocharov}, L.~G. and {Usoskin}, I.~G.},
        title = "Analysis of the ground level enhancement on 17 May 2012 using data from the global neutron monitor network",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2014,
       volume = {119},
       number = {2},
        pages = {670-679},
          doi = {10.1002/2013JA019253},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2014JGRA..119..670M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2014A&A...562L..10U,
       author = {{Usoskin}, I.~G. and {Hulot}, G. and {Gallet}, Y. and {Roth}, R. and {Licht}, A. and {Joos}, F. and {Kovaltsov}, G.~A. and {Th{\'e}bault}, E. and {Khokhlov}, A.},
        title = "Evidence for distinct modes of solar activity",
      journal = {\aap},
         year = 2014,
       volume = {562},
          eid = {L10},
        pages = {L10},
          doi = {10.1051/0004-6361/201423391},
archivePrefix = {arXiv},
       eprint = {1402.4720},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2014A&A...562L..10U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2014cosp...40E3446U,
       author = {{Usoskin}, Ilya and {Kovaltsov}, Gennady A.},
        title = "On the validity of force-field approximation for galactic cosmic ray spectrum during Forbush decreases using PAMELA data",
    booktitle = {40th COSPAR Scientific Assembly},
         year = 2014,
       volume = {40},
          eid = {D1.3-34-14},
        pages = {D1.3-34-14},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2014cosp...40E3446U},
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@INPROCEEDINGS{2014cosp...40E3445U,
       author = {{Usoskin}, Ilya and {Kovaltsov}, Gennady and {Hulot}, Gauthier. and {Gallet}, Yves and {Roth}, Raphael and {Licht}, Alexis and {Joos}, Fortunat and {Th}, E. and {Khokhlov}, A. and {Kovaltsov}, Gennady A.},
        title = "New improved reconstruction of solar activity over 3 millennia: Evidence for distinct solar dynamo modes",
    booktitle = {40th COSPAR Scientific Assembly},
         year = 2014,
       volume = {40},
          eid = {D2.2-3-14},
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@INPROCEEDINGS{2014cosp...40E3444U,
       author = {{Usoskin}, Ilya and {Kovaltsov}, Gennady},
        title = "Extreme event of cosmic rays in 775 AD: Data and hypotheses",
    booktitle = {40th COSPAR Scientific Assembly},
         year = 2014,
       volume = {40},
          eid = {D2.2-47-14},
        pages = {D2.2-47-14},
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      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2014cosp...40E3443U,
       author = {{Usoskin}, Ilya},
        title = "The unusual solar minimum in relation to the Sun's history",
    booktitle = {40th COSPAR Scientific Assembly},
         year = 2014,
       volume = {40},
          eid = {D1.3-11-14},
        pages = {D1.3-11-14},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2014cosp...40E3443U},
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@INPROCEEDINGS{2014cosp...40E2583P,
       author = {{Poluianov}, Stepan and {Usoskin}, Ilya and {Traversi}, Rita},
        title = "Cosmogenic production vs. climate for the nitrate record in the TALDICE Antarctic ice core",
    booktitle = {40th COSPAR Scientific Assembly},
         year = 2014,
       volume = {40},
          eid = {D2.2-44-14},
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@INPROCEEDINGS{2014cosp...40E2127M,
       author = {{Mishev}, Alexander and {Usoskin}, Ilya and {Artamonov}, Anton and {Kovaltsov}, Gennady A.},
        title = "The world-wide neutron monitor network as a toll to detect solar neutrons: a revisited approach",
    booktitle = {40th COSPAR Scientific Assembly},
         year = 2014,
       volume = {40},
          eid = {C2.3-30-14},
        pages = {C2.3-30-14},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2014cosp...40E2127M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2014cosp...40E2126M,
       author = {{Mishev}, Alexander and {Usoskin}, Ilya and {Kocharov}, Leon},
        title = "Temporal Evolution of Spectral and Angular Characteristics of SEP Particles during Several GLEs of Solar Cycle 23 Derived from NM Data",
    booktitle = {40th COSPAR Scientific Assembly},
         year = 2014,
       volume = {40},
          eid = {PSW.3-11-14},
        pages = {PSW.3-11-14},
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@INPROCEEDINGS{2014cosp...40E2125M,
       author = {{Mishev}, Alexander and {Usoskin}, Ilya and {Kovaltsov}, Gennady},
        title = "The Disagreement Between Models and Observations of the Cosmic Ray Latitude Surveys is Solved with New NM Yield Function",
    booktitle = {40th COSPAR Scientific Assembly},
         year = 2014,
       volume = {40},
          eid = {PSW.3-5-14},
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@INPROCEEDINGS{2014cosp...40E2124M,
       author = {{Mishev}, Alexander and {Usoskin}, Ilya},
        title = "Method of Express Analysis of Temporal Evolution of the Spectral and Angular Distributions of Seps during Gles Using NM Data",
    booktitle = {40th COSPAR Scientific Assembly},
         year = 2014,
       volume = {40},
          eid = {PSW.3-9-14},
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@INPROCEEDINGS{2014cosp...40E2114M,
       author = {{Mironova}, Irina and {Usoskin}, Ilya},
        title = "High energy particles and aerosol processes in the atmosphere",
    booktitle = {40th COSPAR Scientific Assembly},
         year = 2014,
       volume = {40},
          eid = {C2.3-10-14},
        pages = {C2.3-10-14},
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@INPROCEEDINGS{2014cosp...40E.123A,
       author = {{Artamonov}, Anton and {Usoskin}, Ilya and {Kovaltsov}, Gennady},
        title = "Parameterization of ionization induced in the atmosphere by precipitating particles",
    booktitle = {40th COSPAR Scientific Assembly},
         year = 2014,
       volume = {40},
          eid = {C2.3-4-14},
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@ARTICLE{2014SoPh..289..211K,
       author = {{Kovaltsov}, G.~A. and {Usoskin}, I.~G.},
        title = "Occurrence Probability of Large Solar Energetic Particle Events: Assessment from Data on Cosmogenic Radionuclides in Lunar Rocks",
      journal = {\solphys},
         year = 2014,
       volume = {289},
       number = {1},
        pages = {211-220},
          doi = {10.1007/s11207-013-0333-5},
archivePrefix = {arXiv},
       eprint = {1305.5088},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2014SoPh..289..211K},
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@ARTICLE{2013A&A...559A..28L,
       author = {{Leussu}, Raisa and {Usoskin}, Ilya G. and {Arlt}, Rainer and {Mursula}, Kalevi},
        title = "Inconsistency of the Wolf sunspot number series around 1848",
      journal = {\aap},
         year = 2013,
       volume = {559},
          eid = {A28},
        pages = {A28},
          doi = {10.1051/0004-6361/201322373},
archivePrefix = {arXiv},
       eprint = {1310.8443},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2013A&A...559A..28L},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2013MNRAS.433.3165A,
       author = {{Arlt}, R. and {Leussu}, R. and {Giese}, N. and {Mursula}, K. and {Usoskin}, I.~G.},
        title = "Sunspot positions and sizes for 1825-1867 from the observations by Samuel Heinrich Schwabe",
      journal = {\mnras},
         year = 2013,
       volume = {433},
       number = {4},
        pages = {3165-3172},
          doi = {10.1093/mnras/stt961},
archivePrefix = {arXiv},
       eprint = {1305.7400},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2013MNRAS.433.3165A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2013IAUS..294..595P,
       author = {{Pipin}, V.~V. and {Sokoloff}, D.~D. and {Usoskin}, I.~G.},
        title = "Waldmeier relations and the solar cycle dynamics by the mean-field dynamos",
    booktitle = {Solar and Astrophysical Dynamos and Magnetic Activity},
         year = 2013,
       editor = {{Kosovichev}, Alexander G. and {de Gouveia Dal Pino}, Elisabete and {Yan}, Yihua},
       volume = {294},
        pages = {595-596},
          doi = {10.1017/S1743921313003384},
archivePrefix = {arXiv},
       eprint = {1211.2423},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2013IAUS..294..595P},
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@ARTICLE{2013AdSpR..52...22N,
       author = {{Nevalainen}, J. and {Usoskin}, I.~G. and {Mishev}, A.},
        title = "Eccentric dipole approximation of the geomagnetic field: Application to cosmic ray computations",
      journal = {Advances in Space Research},
         year = 2013,
       volume = {52},
       number = {1},
        pages = {22-29},
          doi = {10.1016/j.asr.2013.02.020},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2013AdSpR..52...22N},
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@ARTICLE{2013JGRA..118.2783M,
       author = {{Mishev}, A.~L. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "Neutron monitor yield function: New improved computations",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2013,
       volume = {118},
       number = {6},
        pages = {2783-2788},
          doi = {10.1002/jgra.50325},
archivePrefix = {arXiv},
       eprint = {1612.01498},
 primaryClass = {physics.space-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2013JGRA..118.2783M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2013A&A...552L...3U,
       author = {{Usoskin}, I.~G. and {Kromer}, B. and {Ludlow}, F. and {Beer}, J. and {Friedrich}, M. and {Kovaltsov}, G.~A. and {Solanki}, S.~K. and {Wacker}, L.},
        title = "The AD775 cosmic event revisited: the Sun is to blame",
      journal = {\aap},
         year = 2013,
       volume = {552},
          eid = {L3},
        pages = {L3},
          doi = {10.1051/0004-6361/201321080},
archivePrefix = {arXiv},
       eprint = {1302.6897},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2013A&A...552L...3U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2013A&A...552A..84Z,
       author = {{Zhang}, L. and {Mursula}, K. and {Usoskin}, I.},
        title = "Consistent long-term variation in the hemispheric asymmetry of solar rotation",
      journal = {\aap},
         year = 2013,
       volume = {552},
          eid = {A84},
        pages = {A84},
          doi = {10.1051/0004-6361/201220693},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2013A&A...552A..84Z},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2013LRSP...10....1U,
       author = {{Usoskin}, Ilya G.},
        title = "A History of Solar Activity over Millennia",
      journal = {Liv.\ Rev.\ Solar Phys.},
         year = 2013,
       volume = {10},
       number = {1},
          eid = {1},
        pages = {1},
          doi = {10.12942/lrsp-2013-1},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2013LRSP...10....1U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2013JSWSC...3A..12V,
       author = {{Vainio}, Rami and {Valtonen}, Eino and {Heber}, Bernd and {Malandraki}, Olga E. and {Papaioannou}, Athanasios and {Klein}, Karl-Ludwig and {Afanasiev}, Alexander and {Agueda}, Neus and {Aurass}, Henry and {Battarbee}, Markus and {Braune}, Stephan and {Dr{\"o}ge}, Wolfgang and {Ganse}, Urs and {Hamadache}, Clarisse and {Heynderickx}, Daniel and {Huttunen-Heikinmaa}, Kalle and {Kiener}, J{\"u}rgen and {Kilian}, Patrick and {Kopp}, Andreas and {Kouloumvakos}, Athanasios and {Maisala}, Sami and {Mishev}, Alexander and {Miteva}, Rositsa and {Nindos}, Alexander and {Oittinen}, Tero and {Raukunen}, Osku and {Riihonen}, Esa and {Rodr{\'\i}guez-Gas{\'e}n}, Rosa and {Saloniemi}, Oskari and {Sanahuja}, Blai and {Scherer}, Renate and {Spanier}, Felix and {Tatischeff}, Vincent and {Tziotziou}, Kostas and {Usoskin}, Ilya G. and {Vilmer}, Nicole},
        title = "The first SEPServer event catalogue \raisebox{-0.5ex}~68-MeV solar proton events observed at 1 AU in 1996-2010",
      journal = {Journal of Space Weather and Space Climate},
         year = 2013,
       volume = {3},
          eid = {A12},
        pages = {A12},
          doi = {10.1051/swsc/2013030},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2013JSWSC...3A..12V},
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@ARTICLE{2013ApJ...765L..30G,
       author = {{Gopalswamy}, N. and {Xie}, H. and {Akiyama}, S. and {Yashiro}, S. and {Usoskin}, I.~G. and {Davila}, J.~M.},
        title = "The First Ground Level Enhancement Event of Solar Cycle 24: Direct Observation of Shock Formation and Particle Release Heights",
      journal = {\apjl},
         year = 2013,
       volume = {765},
       number = {2},
          eid = {L30},
        pages = {L30},
          doi = {10.1088/2041-8205/765/2/L30},
archivePrefix = {arXiv},
       eprint = {1302.1474},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2013ApJ...765L..30G},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2013JPhCS.409a2232M,
       author = {{Makrantoni}, P. and {Mavromichalaki}, H. and {Usoskin}, I. and {Papaioannou}, A.},
        title = "Calculation of the cosmic ray induced ionization for the region of Athens",
    booktitle = {Journal of Physics Conference Series},
         year = 2013,
       series = {Journal of Physics Conference Series},
       volume = {409},
          eid = {012232},
        pages = {012232},
          doi = {10.1088/1742-6596/409/1/012232},
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@INPROCEEDINGS{2013JPhCS.409a2180S,
       author = {{Starodubtsev}, S.~A. and {Grigoryev}, V.~G. and {Usoskin}, I.~G.},
        title = "Forecast of the arrival of interplanetary shocks by measuring cosmic ray fluctuations in the interplanetary medium",
    booktitle = {Journal of Physics Conference Series},
         year = 2013,
       series = {Journal of Physics Conference Series},
       volume = {409},
          eid = {012180},
        pages = {012180},
          doi = {10.1088/1742-6596/409/1/012180},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2013JPhCS.409a2180S},
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@INPROCEEDINGS{2013JPhCS.409a2152M,
       author = {{Mishev}, A. and {Usoskin}, I.},
        title = "Computations of cosmic ray propagation in the Earth's atmosphere, towards a GLE analysis",
    booktitle = {Journal of Physics Conference Series},
         year = 2013,
       series = {Journal of Physics Conference Series},
       volume = {409},
          eid = {012152},
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          doi = {10.1088/1742-6596/409/1/012152},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2013JPhCS.409a2152M},
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@INPROCEEDINGS{2012AGUFMSH21A2180G,
       author = {{Gopalswamy}, N. and {Xie}, H. and {Nitta}, N.~V. and {Usoskin}, I. and {Davila}, J.~M.},
        title = "Hot Precursor Ejecta and Other Peculiarities of the 2012 May 17 Ground Level Enhancement Event",
    booktitle = {AGU abstracts},
         year = 2012,
       volume = {2012},
          eid = {SH21A-2180},
        pages = {SH21A-2180},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2012AGUFMSH21A2180G},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INCOLLECTION{2012aaa2.book..397U,
       author = {{Usoskin}, Ilya and {Krivova}, Natalie},
        title = "Climate and Weather of the Sun - Earth System",
    booktitle = {Astronomy and Astrophysics},
         year = 2012,
        pages = {397-423},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2012aaa2.book..397U},
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@ARTICLE{2012SSRv..171...23G,
       author = {{Gopalswamy}, N. and {Xie}, H. and {Yashiro}, S. and {Akiyama}, S. and {M{\"a}kel{\"a}}, P. and {Usoskin}, I.~G.},
        title = "Properties of Ground Level Enhancement Events and the Associated Solar Eruptions During Solar Cycle 23",
      journal = {\ssr},
         year = 2012,
       volume = {171},
       number = {1-4},
        pages = {23-60},
          doi = {10.1007/s11214-012-9890-4},
archivePrefix = {arXiv},
       eprint = {1205.0688},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2012SSRv..171...23G},
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@ARTICLE{2012GeoRL..3919102O,
       author = {{Owens}, M.~J. and {Usoskin}, I. and {Lockwood}, M.},
        title = "Heliospheric modulation of galactic cosmic rays during grand solar minima: Past and future variations",
      journal = {\grl},
         year = 2012,
       volume = {39},
       number = {19},
          eid = {L19102},
        pages = {L19102},
          doi = {10.1029/2012GL053151},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2012GeoRL..3919102O},
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@ARTICLE{2012SoPh..280..237T,
       author = {{Traversi}, R. and {Usoskin}, I.~G. and {Solanki}, S.~K. and {Becagli}, S. and {Frezzotti}, M. and {Severi}, M. and {Stenni}, B. and {Udisti}, R.},
        title = "Nitrate in Polar Ice: A New Tracer of Solar Variability",
      journal = {\solphys},
         year = 2012,
       volume = {280},
       number = {1},
        pages = {237-254},
          doi = {10.1007/s11207-012-0060-3},
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@ARTICLE{2012ApJ...757...92U,
       author = {{Usoskin}, Ilya G. and {Kovaltsov}, Gennady A.},
        title = "Occurrence of Extreme Solar Particle Events: Assessment from Historical Proxy Data",
      journal = {\apj},
         year = 2012,
       volume = {757},
       number = {1},
          eid = {92},
        pages = {92},
          doi = {10.1088/0004-637X/757/1/92},
archivePrefix = {arXiv},
       eprint = {1207.5932},
 primaryClass = {astro-ph.SR},
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@ARTICLE{2012AdSpR..50..655U,
       author = {{Usoskin}, Ilya G.},
        title = "Preface: Solar Variability, Cosmic Rays and Climate: What's up?",
      journal = {Advances in Space Research},
         year = 2012,
       volume = {50},
       number = {6},
        pages = {655-655},
          doi = {10.1016/j.asr.2012.06.030},
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@ARTICLE{2012JGRA..117.8103S,
       author = {{Schrijver}, C.~J. and {Beer}, J. and {Baltensperger}, U. and {Cliver}, E.~W. and {G{\"u}del}, M. and {Hudson}, H.~S. and {McCracken}, K.~G. and {Osten}, R.~A. and {Peter}, T. and {Soderblom}, D.~R. and {Usoskin}, I.~G. and {Wolff}, E.~W.},
        title = "Estimating the frequency of extremely energetic solar events, based on solar, stellar, lunar, and terrestrial records",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2012,
       volume = {117},
       number = {A8},
          eid = {A08103},
        pages = {A08103},
          doi = {10.1029/2012JA017706},
archivePrefix = {arXiv},
       eprint = {1206.4889},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2012JGRA..117.8103S},
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@INPROCEEDINGS{2012cosp...39.2039U,
       author = {{Usoskin}, Ilya and {Kovaltsov}, Gennady and {Bazilevskaya}, Galina},
        title = "Reconstruction of solar modulation parameter for galactic cosmic rays for the last 70 years",
    booktitle = {39th COSPAR Scientific Assembly},
         year = 2012,
       volume = {39},
        pages = {2039},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2012cosp...39.2039U},
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@INPROCEEDINGS{2012cosp...39.2038U,
       author = {{Usoskin}, Ilya},
        title = "Reconstructing the history of past solar activity",
    booktitle = {39th COSPAR Scientific Assembly},
         year = 2012,
       volume = {39},
        pages = {2038},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2012cosp...39.2038U},
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@INPROCEEDINGS{2012cosp...39.2001T,
       author = {{Traversi}, Rita and {Usoskin}, Ilya and {Solanki}, Sami K. and {Becagli}, Silvia and {Frezzotti}, Massimo and {Severi}, Mirko and {Stenni}, Barbara and {Udisti}, Roberto},
        title = "Nitrate in polar ice as a new index of solar variability",
    booktitle = {39th COSPAR Scientific Assembly},
         year = 2012,
       volume = {39},
        pages = {2001},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2012cosp...39.2001T},
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@INPROCEEDINGS{2012cosp...39.1751S,
       author = {{Semeniuk}, Kirill and {Usoskin}, Ilya and {Fomichev}, Victor and {Melo}, Stella M.~L. and {McConnell}, John and {Fu}, Chao},
        title = "Middle atmosphere response to the solar cycle in irradiance and ionizing particle precipitation.",
    booktitle = {39th COSPAR Scientific Assembly},
         year = 2012,
       volume = {39},
        pages = {1751},
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@INPROCEEDINGS{2012IAUS..286..372U,
       author = {{Usoskin}, Ilya G. and {Solanki}, Sami K. and {Kovaltsov}, Gennady A.},
        title = "Grand minima of solar activity during the last millennia",
    booktitle = {Comparative Magnetic Minima: Characterizing Quiet Times in the Sun and Stars},
         year = 2012,
       editor = {{Mandrini}, Cristina H. and {Webb}, David F.},
       volume = {286},
        pages = {372-382},
          doi = {10.1017/S174392131200511X},
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@ARTICLE{2012E&PSL.337..114K,
       author = {{Kovaltsov}, Gennady A. and {Mishev}, Alexander and {Usoskin}, Ilya G.},
        title = "A new model of cosmogenic production of radiocarbon $^{14}$C in the atmosphere",
      journal = {Earth and Planetary Science Letters},
         year = 2012,
       volume = {337},
        pages = {114-120},
          doi = {10.1016/j.epsl.2012.05.036},
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       eprint = {1206.6974},
 primaryClass = {physics.ao-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2012E&PSL.337..114K},
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@ARTICLE{2012A&A...542A..26P,
       author = {{Pipin}, V.~V. and {Sokoloff}, D.~D. and {Usoskin}, I.~G.},
        title = "Variations of the solar cycle profile in a solar dynamo with fluctuating dynamo governing parameters",
      journal = {\aap},
         year = 2012,
       volume = {542},
          eid = {A26},
        pages = {A26},
          doi = {10.1051/0004-6361/201118733},
archivePrefix = {arXiv},
       eprint = {1112.6218},
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       adsurl = {https://ui.adsabs.harvard.edu/abs/2012A&A...542A..26P},
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@ARTICLE{2012JASTP..74..164L,
       author = {{Lepp{\"a}nen}, A. -P. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A. and {Paatero}, J.},
        title = "Cosmogenic $^{7}$Be and $^{22}$Na in Finland: Production, observed periodicities and the connection to climatic phenomena",
      journal = {Journal of Atmospheric and Solar-Terrestrial Physics},
         year = 2012,
       volume = {74},
        pages = {164-180},
          doi = {10.1016/j.jastp.2011.10.017},
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@ARTICLE{2011AdSpR..48..811P,
       author = {{Pacini}, A.~A. and {Usoskin}, I.~G. and {Evangelista}, H. and {Echer}, E. and {de Paula}, R.},
        title = "Cosmogenic isotope $^{7}$Be: A case study of depositional processes in Rio de Janeiro in 2008-2009",
      journal = {Advances in Space Research},
         year = 2011,
       volume = {48},
       number = {5},
        pages = {811-818},
          doi = {10.1016/j.asr.2011.04.035},
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@ARTICLE{2011A&A...531A...6V,
       author = {{Vieira}, L.~E.~A. and {Solanki}, S.~K. and {Krivova}, N.~A. and {Usoskin}, I.},
        title = "Evolution of the solar irradiance during the Holocene",
      journal = {\aap},
         year = 2011,
       volume = {531},
          eid = {A6},
        pages = {A6},
          doi = {10.1051/0004-6361/201015843},
archivePrefix = {arXiv},
       eprint = {1103.4958},
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       adsurl = {https://ui.adsabs.harvard.edu/abs/2011A&A...531A...6V},
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@ARTICLE{2011AdSpR..47.2210M,
       author = {{Mavromichalaki}, H. and {Papaioannou}, A. and {Plainaki}, C. and {Sarlanis}, C. and {Souvatzoglou}, G. and {Gerontidou}, M. and {Papailiou}, M. and {Eroshenko}, E. and {Belov}, A. and {Yanke}, V. and {Fl{\"u}ckiger}, E.~O. and {B{\"u}tikofer}, R. and {Parisi}, M. and {Storini}, M. and {Klein}, K. -L. and {Fuller}, N. and {Steigies}, C.~T. and {Rother}, O.~M. and {Heber}, B. and {Wimmer-Schweingruber}, R.~F. and {Kudela}, K. and {Strharsky}, I. and {Langer}, R. and {Usoskin}, I. and {Ibragimov}, A. and {Chilingaryan}, A. and {Hovsepyan}, G. and {Reymers}, A. and {Yeghikyan}, A. and {Kryakunova}, O. and {Dryn}, E. and {Nikolayevskiy}, N. and {Dorman}, L. and {Pustil'Nik}, L.},
        title = "Applications and usage of the real-time Neutron Monitor Database",
      journal = {Advances in Space Research},
         year = 2011,
       volume = {47},
       number = {12},
        pages = {2210-2222},
          doi = {10.1016/j.asr.2010.02.019},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2011AdSpR..47.2210M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2011yCat..35310006V,
       author = {{Vieira}, L.~E.~A. and {Solanki}, S.~K. and {Krivova}, N.~A. and {Usoskin}, I.},
        title = "VizieR Online Data Catalog: Evolution of solar irradiance during Holocene (Vieira+, 2011)",
      journal = {VizieR Online Data Catalog},
         year = 2011,
          eid = {J/A+A/531/A6},
        pages = {J/A+A/531/A6},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2011yCat..35310006V},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2011A&A...529A..23Z,
       author = {{Zhang}, L. and {Mursula}, K. and {Usoskin}, I. and {Wang}, H.},
        title = "Global analysis of active longitudes of sunspots",
      journal = {\aap},
         year = 2011,
       volume = {529},
          eid = {A23},
        pages = {A23},
          doi = {10.1051/0004-6361/201015255},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2011A&A...529A..23Z},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2011ApJ...731L..24V,
       author = {{Vaquero}, Jos{\'e} M. and {Gallego}, M.~C. and {Usoskin}, Ilya G. and {Kovaltsov}, Gennady A.},
        title = "Revisited Sunspot Data: A New Scenario for the Onset of the Maunder Minimum",
      journal = {\apjl},
         year = 2011,
       volume = {731},
       number = {2},
          eid = {L24},
        pages = {L24},
          doi = {10.1088/2041-8205/731/2/L24},
archivePrefix = {arXiv},
       eprint = {1103.1520},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2011ApJ...731L..24V},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2011JGRA..116.2104U,
       author = {{Usoskin}, Ilya G. and {Bazilevskaya}, Galina A. and {Kovaltsov}, Gennady A.},
        title = "Solar modulation parameter for cosmic rays since 1936 reconstructed from ground-based neutron monitors and ionization chambers",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2011,
       volume = {116},
       number = {A2},
          eid = {A02104},
        pages = {A02104},
          doi = {10.1029/2010JA016105},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2011JGRA..116.2104U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2011JASTP..73..258Z,
       author = {{Zhang}, L. and {Mursula}, K. and {Usoskin}, I. and {Wang}, H.},
        title = "Global analysis of active longitudes of solar X-ray flares",
      journal = {Journal of Atmospheric and Solar-Terrestrial Physics},
         year = 2011,
       volume = {73},
       number = {2-3},
        pages = {258-263},
          doi = {10.1016/j.jastp.2009.12.003},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2011JASTP..73..258Z},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2011JASTP..73..179M,
       author = {{Mursula}, Kalevi and {Marsh}, Dan and {Nandy}, Dibyendu and {Usoskin}, Ilya},
        title = "A review of Space Climate and an introduction to the papers of the JASTP special issue on Space Climate",
      journal = {Journal of Atmospheric and Solar-Terrestrial Physics},
         year = 2011,
       volume = {73},
       number = {2-3},
        pages = {179-181},
          doi = {10.1016/j.jastp.2010.11.002},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2011JASTP..73..179M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2011MmSAI..82..937U,
       author = {{Usoskin}, I.~G.},
        title = "Cosmic rays and climate forcing .",
      journal = {\memsai},
         year = 2011,
       volume = {82},
        pages = {937},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2011MmSAI..82..937U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2011ICRC...12..131U,
       author = {{Usoskin}, Ilya},
        title = "Long term Solar/heliospheric variability",
    booktitle = {International Cosmic Ray Conference},
         year = 2011,
       series = {International Cosmic Ray Conference},
       volume = {11},
        pages = {131},
          doi = {10.7529/ICRC2011/V12/H10},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2011ICRC...12..131U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2011ICRC...11..343U,
       author = {{Usoskin}, Ilya},
        title = "Numerical model of cosmic ray induced ionization in the atmosphere CRAC:CRII",
    booktitle = {International Cosmic Ray Conference},
         year = 2011,
       series = {International Cosmic Ray Conference},
       volume = {11},
        pages = {343},
          doi = {10.7529/ICRC2011/V11/0284},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2011ICRC...11..343U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2011ICRC...11...39U,
       author = {{Usoskin}, Ilya},
        title = "Solar modulation of cosmic rays since 1936: Neutron monitors and balloon-borne data",
    booktitle = {International Cosmic Ray Conference},
         year = 2011,
       series = {International Cosmic Ray Conference},
       volume = {11},
        pages = {39},
          doi = {10.7529/ICRC2011/V11/0285},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2011ICRC...11...39U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2011ASInC...2..175Z,
       author = {{Zhang}, L. and {Mursula}, K. and {Usoskin}, I. and {Wang}, H. and {Du}, Z.},
        title = "Long-term variation of solar surface differential rotation",
    booktitle = {Astronomical Society of India Conference Series},
         year = 2011,
       series = {Astronomical Society of India Conference Series},
       volume = {2},
        pages = {175-180},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2011ASInC...2..175Z},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2010JASTP..72.1036L,
       author = {{Lepp{\"a}nen}, A. -P. and {Pacini}, A.~A. and {Usoskin}, I.~G. and {Aldahan}, A. and {Echer}, E. and {Evangelista}, H. and {Klemola}, S. and {Kovaltsov}, G.~A. and {Mursula}, K. and {Possnert}, G.},
        title = "Cosmogenic $^{7}$Be in air: A complex mixture of production and transport",
      journal = {Journal of Atmospheric and Solar-Terrestrial Physics},
         year = 2010,
       volume = {72},
       number = {13},
        pages = {1036-1043},
          doi = {10.1016/j.jastp.2010.06.006},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010JASTP..72.1036L},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2010AstL...36..438S,
       author = {{Starodubtsev}, S.~A. and {Usoskin}, I.~G.},
        title = "Fluctuations of energetic particle flux during solar cycle based on measurements in the solar wind, in the magnetosphere, and at Earth",
      journal = {Astronomy Letters},
         year = 2010,
       volume = {36},
       number = {6},
        pages = {438-443},
          doi = {10.1134/S1063773710060071},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010AstL...36..438S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2010JGRD..11510302U,
       author = {{Usoskin}, Ilya G. and {Kovaltsov}, Gennady A. and {Mironova}, Irina A.},
        title = "Cosmic ray induced ionization model CRAC:CRII: An extension to the upper atmosphere",
      journal = {Journal of Geophysical Research (Atmospheres)},
         year = 2010,
       volume = {115},
       number = {D10},
          eid = {D10302},
        pages = {D10302},
          doi = {10.1029/2009JD013142},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010JGRD..11510302U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2010E&PSL.291..182K,
       author = {{Kovaltsov}, Gennady A. and {Usoskin}, Ilya G.},
        title = "A new 3D numerical model of cosmogenic nuclide $^{10}$Be production in the atmosphere",
      journal = {Earth and Planetary Science Letters},
         year = 2010,
       volume = {291},
       number = {1-4},
        pages = {182-188},
          doi = {10.1016/j.epsl.2010.01.011},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010E&PSL.291..182K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2010SoPh..261..353U,
       author = {{Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "Critical Comment on the Article by R. Rek ``The Maunder Minimum and the Sun as the Possible Source of Particles Creating Increased Abundance of the $^{14}$C Carbon Isotope''",
      journal = {\solphys},
         year = 2010,
       volume = {261},
       number = {2},
        pages = {353-359},
          doi = {10.1007/s11207-009-9497-4},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010SoPh..261..353U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2010JASTP..72..176G,
       author = {{Giles Harrison}, R. and {Usoskin}, Ilya},
        title = "Solar modulation in surface atmospheric electricity",
      journal = {Journal of Atmospheric and Solar-Terrestrial Physics},
         year = 2010,
       volume = {72},
       number = {2-3},
        pages = {176-182},
          doi = {10.1016/j.jastp.2009.11.006},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010JASTP..72..176G},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2010IAUS..264..111S,
       author = {{Sokoloff}, Dmitry and {Arlt}, Rainer and {Moss}, David and {Saar}, Steven H. and {Usoskin}, Ilya},
        title = "Sunspot cycles and Grand Minima",
    booktitle = {Solar and Stellar Variability: Impact on Earth and Planets},
         year = 2010,
       editor = {{Kosovichev}, Alexander G. and {Andrei}, Alexandre H. and {Rozelot}, Jean-Pierre},
       volume = {264},
        pages = {111-119},
          doi = {10.1017/S1743921309992511},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010IAUS..264..111S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2010ACP....10.1885K,
       author = {{Kulmala}, M. and {Riipinen}, I. and {Nieminen}, T. and {Hulkkonen}, M. and {Sogacheva}, L. and {Manninen}, H.~E. and {Paasonen}, P. and {Pet{\"a}j{\"a}}, T. and {Dal Maso}, M. and {Aalto}, P.~P. and {Viljanen}, A. and {Usoskin}, I. and {Vainio}, R. and {Mirme}, S. and {Mirme}, A. and {Minikin}, A. and {Petzold}, A. and {H{\~o}rrak}, U. and {Pla{\ss}-D{\"u}lmer}, C. and {Birmili}, W. and {Kerminen}, V. -M.},
        title = "Atmospheric data over a solar cycle: no connection between galactic cosmic rays and new particle formation",
      journal = {Atmospheric Chemistry \& Physics},
         year = 2010,
       volume = {10},
       number = {4},
        pages = {1885-1898},
          doi = {10.5194/acpd-9-21525-2009},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010ACP....10.1885K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2010cosp...38.1754U,
       author = {{Usoskin}, Ilya and {Kovaltsov}, Gennady},
        title = "A new 3D numerical model for production of cosmogenic spallation products (7) Be, (10) Be, (22) Na in the atmosphere",
    booktitle = {38th COSPAR Scientific Assembly},
         year = 2010,
       volume = {38},
        pages = {3},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010cosp...38.1754U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2010cosp...38.1720V,
       author = {{Voiculescu}, Mirela and {Usoskin}, Ilya},
        title = "Can the solar proxies -cloud cover relationship be mediated by internal climatic oscillations?",
    booktitle = {38th COSPAR Scientific Assembly},
         year = 2010,
       volume = {38},
        pages = {3},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010cosp...38.1720V},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2010cosp...38.1718U,
       author = {{Usoskin}, Ilya},
        title = "Variability of Cosmic Ray Induced Ionization Relevant to Climate: A Review",
    booktitle = {38th COSPAR Scientific Assembly},
         year = 2010,
       volume = {38},
        pages = {2},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010cosp...38.1718U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2010cosp...38.1685K,
       author = {{Klein}, Karl-Ludwig and {Steigies}, Christian and {Steigies}, Christian T. and {Wimmer-Schweingruber}, Robert F. and {Kudela}, Karel and {Strharsky}, Igor and {Langer}, Ronald and {Usoskin}, Ilya and {Ibragimov}, Askar and {Fl{\"u}ckiger}, Erwin O. and {B{\"u}tikofer}, Rolf and {Eroshenko}, Eugenia and {Belov}, Anatoly and {Yanke}, Victor and {Klein}, Karl-Ludwig and {Fuller}, Nicolas and {Mavromichalaki}, Helen and {Papaioannou}, Athana-Sios and {Sarlanis}, Christos and {Souvatzoglou}, George and {Plainaki}, Christina and {Geron-Tidou}, Maria and {Papailiou}, Maria-Christina and {Mariatos}, George and {Chilingaryan}, Ashot and {Hovsepyan}, G. and {Reymers}, Artur and {Parisi}, Mario and {Kryakunova}, Olga and {Tsepakina}, Irina and {Nikolayevskiy}, Nikolay and {Dor-Man}, Lev and {Pustil'Nik}, Lev and {Garc{\'\i}a-Poblaci{\'o}n}, Oscar},
        title = "WWW.NMDB.EU: The real-time Neutron Monitor databas",
    booktitle = {38th COSPAR Scientific Assembly},
         year = 2010,
       volume = {38},
        pages = {3},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010cosp...38.1685K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2010cosp...38.1679S,
       author = {{Starodubtsev}, Sergey and {Grigoryev}, Vladislav and {Usoskin}, Ilya and {Mursula}, Kalevi and {Kovaltsov}, Gennady},
        title = "Unusual features of solar cycle 23: cosmic rays and solar wind turbulence.",
    booktitle = {38th COSPAR Scientific Assembly},
         year = 2010,
       volume = {38},
        pages = {6},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010cosp...38.1679S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2010cosp...38.1350M,
       author = {{Mironova}, Irina and {Usoskin}, Ilya and {Kovaltsov}, Gennady and {Randall}, Cora},
        title = "Effect of an extreme solar energetic particle event of January 20, 2005 on polar stratospheric aerosols",
    booktitle = {38th COSPAR Scientific Assembly},
         year = 2010,
       volume = {38},
        pages = {5},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010cosp...38.1350M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2010cosp...38.1343U,
       author = {{Usoskin}, Ilya and {Mironova}, Irina and {Tylka}, Allan J. and {Kovaltsov}, Gennady and {Dietrich}, William F.},
        title = "Ionization of low and middle atmosphere caused by strong solar particle events",
    booktitle = {38th COSPAR Scientific Assembly},
         year = 2010,
       volume = {38},
        pages = {6},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010cosp...38.1343U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2010cosp...38.1330U,
       author = {{Usoskin}, Ilya and {Kovaltsov}, Gennady},
        title = "Modelling of Cosmic Ray Induced Ionization of Low and Middle Atmosphere: A Review",
    booktitle = {38th COSPAR Scientific Assembly},
         year = 2010,
       volume = {38},
        pages = {3},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010cosp...38.1330U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2010cosp...38..166P,
       author = {{Pacini}, Alessandra and {Usoskin}, Ilya and {Evangelista}, Heitor and {de Paula}, Raquel and {Echer}, Ezequiel},
        title = "Study of air mass dynamics using beryllium-7 data from Rio de Janeiro State",
    booktitle = {38th COSPAR Scientific Assembly},
         year = 2010,
       volume = {38},
        pages = {6},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010cosp...38..166P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2010cosp...38..165P,
       author = {{Pacini}, Alessandra and {Usoskin}, Ilya and {Evangelista}, Heitor and {Echer}, Ezequiel and {Mursula}, Kalevi and {Leppanen}, Ari-Pekka},
        title = "Cosmogenic isotope beryllium-7 in the atmosphere: Production versus transport",
    booktitle = {38th COSPAR Scientific Assembly},
         year = 2010,
       volume = {38},
        pages = {7},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010cosp...38..165P},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2010JASTP..72...19U,
       author = {{Usoskin}, I.~G. and {Mironova}, I.~A. and {Korte}, M. and {Kovaltsov}, G.~A.},
        title = "Regional millennial trend in the cosmic ray induced ionization of the troposphere",
      journal = {Journal of Atmospheric and Solar-Terrestrial Physics},
         year = 2010,
       volume = {72},
       number = {1},
        pages = {19-25},
          doi = {10.1016/j.jastp.2009.10.003},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2010JASTP..72...19U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2009JASTP..71.1717M,
       author = {{Mursula}, K. and {Usoskin}, I. and {Yakovchouk}, O.},
        title = "Does sunspot number calibration by the {textquotedblleft}magnetic needle{textquotedblright} make sense?",
      journal = {Journal of Atmospheric and Solar-Terrestrial Physics},
         year = 2009,
       volume = {71},
       number = {17-18},
        pages = {1717-1726},
          doi = {10.1016/j.jastp.2008.04.017},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2009JASTP..71.1717M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2009AGUFM.A13B0207R,
       author = {{Riipinen}, I. and {Kulmala}, M.~T. and {Nieminen}, T. and {Hulkkonen}, M. and {Sogacheva}, L. and {Manninen}, H. and {Paasonen}, P. and {Petdjd}, T.~T. and {Dal Maso}, M. and {Aalto}, P. and {Viljanen}, A. and {Usoskin}, I. and {Vainio}, R.~O. and {Mirme}, S. and {Mirme}, A. and {Minikin}, A. and {Petzold}, A. and {Horrak}, U. and {Plass-Duelmer}, C. and {Birmili}, W. and {Kerminen}, V.},
        title = "Atmospheric Data over a Solar Cycle: No Connection between Galactic Cosmic Rays and Particle Formation in Boreal Forest",
    booktitle = {AGU abstracts},
         year = 2009,
       volume = {2009},
          eid = {A13B-0207},
        pages = {A13B-0207},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2009AGUFM.A13B0207R},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2009SSRv..147..187V,
       author = {{Vainio}, Rami and {Desorgher}, Laurent and {Heynderickx}, Daniel and {Storini}, Marisa and {Fl{\"u}ckiger}, Erwin and {Horne}, Richard B. and {Kovaltsov}, Gennady A. and {Kudela}, Karel and {Laurenza}, Monica and {McKenna-Lawlor}, Susan and {Rothkaehl}, Hanna and {Usoskin}, Ilya G.},
        title = "Dynamics of the Earth's Particle Radiation Environment",
      journal = {\ssr},
         year = 2009,
       volume = {147},
       number = {3-4},
        pages = {187-231},
          doi = {10.1007/s11214-009-9496-7},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2009SSRv..147..187V},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2009AdSpR..44.1232U,
       author = {{Usoskin}, I.~G. and {Valtonen}, E. and {Vainio}, R. and {Tanskanen}, P.~J. and {Aurela}, A.~M.},
        title = "History of cosmic ray research in Finland",
      journal = {Advances in Space Research},
         year = 2009,
       volume = {44},
       number = {10},
        pages = {1232-1236},
          doi = {10.1016/j.asr.2008.10.042},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2009AdSpR..44.1232U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2009ApJ...700L.154U,
       author = {{Usoskin}, Ilya G. and {Mursula}, Kalevi and {Arlt}, Rainer and {Kovaltsov}, Gennady A.},
        title = "A Solar Cycle Lost in 1793-1800: Early Sunspot Observations Resolve the Old Mystery",
      journal = {\apjl},
         year = 2009,
       volume = {700},
       number = {2},
        pages = {L154-L157},
          doi = {10.1088/0004-637X/700/2/L154},
archivePrefix = {arXiv},
       eprint = {0907.0063},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2009ApJ...700L.154U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2009JGRA..114.3112U,
       author = {{Usoskin}, Ilya G. and {Horiuchi}, Kazuho and {Solanki}, Sami and {Kovaltsov}, Gennady A. and {Bard}, Edouard},
        title = "On the common solar signal in different cosmogenic isotope data sets",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2009,
       volume = {114},
       number = {A3},
          eid = {A03112},
        pages = {A03112},
          doi = {10.1029/2008JA013888},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2009JGRA..114.3112U},
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@ARTICLE{2009JGRA..114.3101A,
       author = {{Alanko-Huotari}, K. and {Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Correction to ``Stochastic simulation of cosmic ray modulation including a wavy heliospheric current sheet''",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2009,
       volume = {114},
       number = {A3},
          eid = {A03101},
        pages = {A03101},
          doi = {10.1029/2008JA013919},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2009JGRA..114.3101A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2009AcGeo..57...88U,
       author = {{Usoskin}, Ilya G. and {Desorgher}, Laurent and {Velinov}, Peter and {Storini}, Marisa and {Fl{\"u}ckiger}, Erwin O. and {B{\"u}tikofer}, Rolf and {Kovaltsov}, Gennady A.},
        title = "Ionization of the earth's atmosphere by solar and galactic cosmic rays",
      journal = {Acta Geophysica},
         year = 2009,
       volume = {57},
       number = {1},
        pages = {88-101},
          doi = {10.2478/s11600-008-0019-9},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2009AcGeo..57...88U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2009SoPh..254..345U,
       author = {{Usoskin}, I.~G. and {Sokoloff}, D. and {Moss}, D.},
        title = "Grand Minima of Solar Activity and the Mean-Field Dynamo",
      journal = {\solphys},
         year = 2009,
       volume = {254},
       number = {2},
        pages = {345-355},
          doi = {10.1007/s11207-008-9293-6},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2009SoPh..254..345U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2008LRSP....5....3U,
       author = {{Usoskin}, Ilya G.},
        title = "A History of Solar Activity over Millennia",
      journal = {Liv.\ Rev.\ Solar Phys.},
         year = 2008,
       volume = {5},
       number = {1},
          eid = {3},
        pages = {3},
          doi = {10.12942/lrsp-2008-3},
archivePrefix = {arXiv},
       eprint = {0810.3972},
 primaryClass = {astro-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008LRSP....5....3U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2008GeoRL..3518610M,
       author = {{Mironova}, I.~A. and {Desorgher}, L. and {Usoskin}, I.~G. and {Fl{\"u}ckiger}, E.~O. and {B{\"u}tikofer}, R.},
        title = "Variations of aerosol optical properties during the extreme solar event in January 2005",
      journal = {\grl},
         year = 2008,
       volume = {35},
       number = {18},
          eid = {L18610},
        pages = {L18610},
          doi = {10.1029/2008GL035120},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008GeoRL..3518610M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2008SoPh..250..221M,
       author = {{Moss}, D. and {Sokoloff}, D. and {Usoskin}, I. and {Tutubalin}, V.},
        title = "Solar Grand Minima and Random Fluctuations in Dynamo Parameters",
      journal = {\solphys},
         year = 2008,
       volume = {250},
       number = {2},
          eid = {221},
        pages = {221},
          doi = {10.1007/s11207-008-9202-z},
archivePrefix = {arXiv},
       eprint = {0806.3331},
 primaryClass = {astro-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008SoPh..250..221M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2008JGRA..113.7102U,
       author = {{Usoskin}, I.~G. and {Braun}, I. and {Gladysheva}, O.~G. and {H{\"o}Randel}, J.~R. and {J{\"a}Ms{\'e}N}, T. and {Kovaltsov}, G.~A. and {Starodubtsev}, S.~A.},
        title = "Forbush decreases of cosmic rays: Energy dependence of the recovery phase",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2008,
       volume = {113},
       number = {A7},
          eid = {A07102},
        pages = {A07102},
          doi = {10.1029/2007JA012955},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008JGRA..113.7102U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2008SSRv..137..149B,
       author = {{Bazilevskaya}, G.~A. and {Usoskin}, I.~G. and {Fl{\"u}ckiger}, E.~O. and {Harrison}, R.~G. and {Desorgher}, L. and {B{\"u}tikofer}, R. and {Krainev}, M.~B. and {Makhmutov}, V.~S. and {Stozhkov}, Y.~I. and {Svirzhevskaya}, A.~K. and {Svirzhevsky}, N.~S. and {Kovaltsov}, G.~A.},
        title = "Cosmic Ray Induced Ion Production in the Atmosphere",
      journal = {\ssr},
         year = 2008,
       volume = {137},
       number = {1-4},
        pages = {149-173},
          doi = {10.1007/s11214-008-9339-y},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008SSRv..137..149B},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2008AGUSMSP23A..06M,
       author = {{Mursula}, K. and {Usoskin}, I. and {Yakovchouk}, O.},
        title = "Does sunspot number calibration by the ``magnetic needle'' make sense?",
    booktitle = {AGU Spring Meeting Abstracts},
         year = 2008,
       volume = {2008},
          eid = {SP23A-06},
        pages = {SP23A-06},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008AGUSMSP23A..06M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2008AGUSMGP31C..05U,
       author = {{Usoskin}, I.},
        title = "Reconstruction Of Grand Minima Of Solar Activity On Multi-Millennial Time Scale",
    booktitle = {AGU Spring Meeting Abstracts},
         year = 2008,
       volume = {2008},
          eid = {GP31C-05},
        pages = {GP31C-05},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008AGUSMGP31C..05U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2008GeoRL..35.5811U,
       author = {{Usoskin}, I.~G. and {Korte}, M. and {Kovaltsov}, G.~A.},
        title = "Role of centennial geomagnetic changes in local atmospheric ionization",
      journal = {\grl},
         year = 2008,
       volume = {35},
       number = {5},
          eid = {L05811},
        pages = {L05811},
          doi = {10.1029/2007GL033040},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008GeoRL..35.5811U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INCOLLECTION{2008pae..book..149B,
       author = {{Bazilevskaya}, G.~A. and {Usoskin}, I.~G. and {Fl{\"u}ckiger}, E.~O. and {Harrison}, R.~G. and {Desorgher}, L. and {B{\"u}tikofer}, R. and {Krainev}, M.~B. and {Makhmutov}, V.~S. and {Stozhkov}, Y.~I. and {Svirzhevskaya}, A.~K. and {Svirzhevsky}, N.~S. and {Kovaltsov}, G.~A.},
        title = "Cosmic Ray Induced Ion Production in the Atmosphere",
    booktitle = {Planetary Atmospheric Electricity},
         year = 2008,
       editor = {{Leblanc}, F. and {Aplin}, K.~L. and {Yair}, Y. and {Harrison}, R.~G. and {Lebreton}, J.~P. and {Blanc}, M.},
       volume = {30},
        pages = {149},
          doi = {10.1007/978-0-387-87664-1\_10},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008pae..book..149B},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2008cosp...37.3267U,
       author = {{Usoskin}, Ilya and {Moss}, David and {Sokoloff}, Dmitry},
        title = "Grand Minima of solar activity : Random fluctuations in dynamo parameters",
    booktitle = {37th COSPAR Scientific Assembly},
         year = 2008,
       volume = {37},
        pages = {3267},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008cosp...37.3267U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2008cosp...37.3266U,
       author = {{Usoskin}, Ilya and {Korte}, Monika and {Kovaltsov}, Gennady},
        title = "Role of centennial geomagnetic changes in local atmospheric ionization",
    booktitle = {37th COSPAR Scientific Assembly},
         year = 2008,
       volume = {37},
        pages = {3266},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008cosp...37.3266U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2008cosp...37.3265U,
       author = {{Usoskin}, Ilya and {Braun}, Isabel and {Gladysheva}, Olga and {Hoerandel}, J.~R. and {Kovaltsov}, Gennady and {Jamsen}, Teppo and {Starodubtsev}, Sergei},
        title = "Forbush decreases of cosmic rays: Does the recovery phase depend on energy?",
    booktitle = {37th COSPAR Scientific Assembly},
         year = 2008,
       volume = {37},
        pages = {3265},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008cosp...37.3265U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2008cosp...37.3264U,
       author = {{Usoskin}, Ilya and {Solanki}, Sami and {Kovaltsov}, Gennady},
        title = "Grand minima and maxima of solar activity on multi-millennial scale",
    booktitle = {37th COSPAR Scientific Assembly},
         year = 2008,
       volume = {37},
        pages = {3264},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008cosp...37.3264U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2008ICRC....1..705U,
       author = {{Usoskin}, Ilya G. and {Kovaltsov}, Gennady A.},
        title = "Numerical Model of Cosmic Ray Induced Ionization in the Atmosphere",
    booktitle = {International Cosmic Ray Conference},
         year = 2008,
       series = {International Cosmic Ray Conference},
       volume = {1},
        pages = {705-708},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008ICRC....1..705U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2008ICRC....1..459U,
       author = {{Usoskin}, Ilya G. and {Alanko-Huotari}, Katja and {Mursula}, Kalevi and {Kovaltsov}, Gennady A.},
        title = "Stochastic simulation of cosmic ray modulation: Effect of a wavy HCS",
    booktitle = {International Cosmic Ray Conference},
         year = 2008,
       series = {International Cosmic Ray Conference},
       volume = {1},
        pages = {459-462},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008ICRC....1..459U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2008ICRC....1..327U,
       author = {{Usoskin}, Ilya G. and {Kovaltsov}, Gennady A. and {Gladysheva}, Olga G. and {J{\"a}ms{\'e}n}, Teppo},
        title = "Forbush decreases: Energy dependence of the recovery",
    booktitle = {International Cosmic Ray Conference},
         year = 2008,
       series = {International Cosmic Ray Conference},
       volume = {1},
        pages = {327-330},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008ICRC....1..327U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2008ICRC....1..135S,
       author = {{Starodubtsev}, S.~A. and {Grigoryev}, A.~V. and {Usoskin}, I.~G. and {Mursula}, K.},
        title = "Rapid cosmic ray fluctuations in real-time during the SEP events in December 2006",
    booktitle = {International Cosmic Ray Conference},
         year = 2008,
       series = {International Cosmic Ray Conference},
       volume = {1},
        pages = {135-138},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008ICRC....1..135S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2008AdSpR..41..955G,
       author = {{Grigoryev}, A.~V. and {Starodubtsev}, S.~A. and {Grigoryev}, V.~G. and {Usoskin}, I.~G. and {Mursula}, K.},
        title = "Fluctuations of cosmic rays and IMF in the vicinity of interplanetary shocks",
      journal = {Advances in Space Research},
         year = 2008,
       volume = {41},
       number = {6},
        pages = {955-961},
          doi = {10.1016/j.asr.2007.04.044},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2008AdSpR..41..955G},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2007JGRA..112.8101A,
       author = {{Alanko-Huotari}, K. and {Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Stochastic simulation of cosmic ray modulation including a wavy heliospheric current sheet",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2007,
       volume = {112},
       number = {A8},
          eid = {A08101},
        pages = {A08101},
          doi = {10.1029/2007JA012280},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2007JGRA..112.8101A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2007A&A...471..301U,
       author = {{Usoskin}, I.~G. and {Solanki}, S.~K. and {Kovaltsov}, G.~A.},
        title = "Grand minima and maxima of solar activity: new observational constraints",
      journal = {\aap},
         year = 2007,
       volume = {471},
       number = {1},
        pages = {301-309},
          doi = {10.1051/0004-6361:20077704},
archivePrefix = {arXiv},
       eprint = {0706.0385},
 primaryClass = {astro-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2007A&A...471..301U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2007A&A...464..761U,
       author = {{Usoskin}, I.~G. and {Berdyugina}, S.~V. and {Poutanen}, J.},
        title = "(1) Preferred longitudes in sunspot activity (2) Preferred sunspot longitudes: non-axisymmetry and differential rotation",
      journal = {\aap},
         year = 2007,
       volume = {464},
       number = {2},
        pages = {761-761},
          doi = {10.1051/0004-6361:20053201e},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2007A&A...464..761U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2007AdSpR..40.1140V,
       author = {{Voiculescu}, Mirela and {Usoskin}, Ilya and {Mursula}, Kalevi},
        title = "Effect of ENSO and volcanic events on the Sun cloud link",
      journal = {Advances in Space Research},
         year = 2007,
       volume = {40},
       number = {7},
        pages = {1140-1145},
          doi = {10.1016/j.asr.2007.01.089},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2007AdSpR..40.1140V},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2007AdSpR..40.1064A,
       author = {{Alanko-Huotari}, K. and {Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Cyclic variations of the heliospheric tilt angle and cosmic ray modulation",
      journal = {Advances in Space Research},
         year = 2007,
       volume = {40},
       number = {7},
        pages = {1064-1069},
          doi = {10.1016/j.asr.2007.02.007},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2007AdSpR..40.1064A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2007AdSpR..40..951U,
       author = {{Usoskin}, I.~G. and {Berdyugina}, S.~V. and {Moss}, D. and {Sokoloff}, D.~D.},
        title = "Long-term persistence of solar active longitudes and its implications for the solar dynamo theory",
      journal = {Advances in Space Research},
         year = 2007,
       volume = {40},
       number = {7},
        pages = {951-958},
          doi = {10.1016/j.asr.2006.12.050},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2007AdSpR..40..951U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2007AdSpR..40..885M,
       author = {{Mursula}, K. and {Usoskin}, I.~G. and {Maris}, G.},
        title = "Introduction to Space Climate",
      journal = {Advances in Space Research},
         year = 2007,
       volume = {40},
       number = {7},
        pages = {885-887},
          doi = {10.1016/j.asr.2007.07.046},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2007AdSpR..40..885M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2007AdSpR..40..342J,
       author = {{J{\"a}ms{\'e}n}, T. and {Usoskin}, I.~G. and {R{\"a}ih{\"a}}, T. and {Sarkamo}, J. and {Kovaltsov}, G.~A.},
        title = "Case study of Forbush decreases: Energy dependence of the recovery",
      journal = {Advances in Space Research},
         year = 2007,
       volume = {40},
       number = {3},
        pages = {342-347},
          doi = {10.1016/j.asr.2007.02.025},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2007AdSpR..40..342J},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2006JASTP..68.2164U,
       author = {{Usoskin}, I.~G. and {Voiculescu}, M. and {Kovaltsov}, G.~A. and {Mursula}, K.},
        title = "Correlation between clouds at different altitudes and solar activity: Fact or Artifact?",
      journal = {Journal of Atmospheric and Solar-Terrestrial Physics},
         year = 2006,
       volume = {68},
       number = {18},
        pages = {2164-2172},
          doi = {10.1016/j.jastp.2006.08.005},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006JASTP..68.2164U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2006JASTP..68.2053D,
       author = {{de Jager}, Cornelis and {Usoskin}, Ilya},
        title = "On possible drivers of Sun-induced climate changes",
      journal = {Journal of Atmospheric and Solar-Terrestrial Physics},
         year = 2006,
       volume = {68},
       number = {18},
        pages = {2053-2060},
          doi = {10.1016/j.jastp.2006.05.019},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006JASTP..68.2053D},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2006SoPh..238..391A,
       author = {{Alanko-Huotari}, K. and {Mursula}, K. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "Global Heliospheric Parameters and Cosmic-Ray Modulation: An Empirical Relation for the Last Decades",
      journal = {\solphys},
         year = 2006,
       volume = {238},
       number = {2},
        pages = {391-404},
          doi = {10.1007/s11207-006-0233-z},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006SoPh..238..391A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2006GeoRL..3321802V,
       author = {{Voiculescu}, Mirela and {Usoskin}, Ilya G. and {Mursula}, Kalevi},
        title = "Different response of clouds to solar input",
      journal = {\grl},
         year = 2006,
       volume = {33},
       number = {21},
          eid = {L21802},
        pages = {L21802},
          doi = {10.1029/2006GL027820},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006GeoRL..3321802V},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2006A&A...457L..25U,
       author = {{Usoskin}, I.~G. and {Solanki}, S.~K. and {Taricco}, C. and {Bhandari}, N. and {Kovaltsov}, G.~A.},
        title = "Long-term solar activity reconstructions: direct test by cosmogenic $^{44}$Ti in meteorites",
      journal = {\aap},
         year = 2006,
       volume = {457},
       number = {3},
        pages = {L25-L28},
          doi = {10.1051/0004-6361:20065803},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006A&A...457L..25U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2006IAUJD...8E..15U,
       author = {{Usoskin}, I.~G. and {Kovaltsov}, G.~A. and {Mursula}, K.},
        title = "An upper limit of sunspot activity during the Maunder minimum",
    booktitle = {IAU Joint Discussion},
         year = 2006,
       series = {IAU Joint Discussion},
       volume = {26},
          eid = {15},
        pages = {15},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006IAUJD...8E..15U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2006IAUJD...8E..14U,
       author = {{Usoskin}, I.~G.},
        title = "The modern high solar activity: How unusual is it?",
    booktitle = {IAU Joint Discussion},
         year = 2006,
       series = {IAU Joint Discussion},
       volume = {26},
          eid = {14},
        pages = {14},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006IAUJD...8E..14U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2006GeoRL..33.8107U,
       author = {{Usoskin}, Ilya G. and {Solanki}, Sami K. and {Kovaltsov}, Gennady A. and {Beer}, J{\"u}rg and {Kromer}, Bernd},
        title = "Solar proton events in cosmogenic isotope data",
      journal = {\grl},
         year = 2006,
       volume = {33},
       number = {8},
          eid = {L08107},
        pages = {L08107},
          doi = {10.1029/2006GL026059},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006GeoRL..33.8107U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2006GeoRL..33.8103U,
       author = {{Usoskin}, I.~G. and {Solanki}, S.~K. and {Korte}, M.},
        title = "Solar activity reconstructed over the last 7000 years: The influence of geomagnetic field changes",
      journal = {\grl},
         year = 2006,
       volume = {33},
       number = {8},
          eid = {L08103},
        pages = {L08103},
          doi = {10.1029/2006GL025921},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006GeoRL..33.8103U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2006AnGeo..24..779S,
       author = {{Starodubtsev}, S.~A. and {Usoskin}, I.~G. and {Grigoryev}, A.~V. and {Mursula}, K.},
        title = "Long-term modulation of the cosmic ray fluctuation spectrum",
      journal = {Annales Geophysicae},
         year = 2006,
       volume = {24},
       number = {2},
        pages = {779-783},
          doi = {10.5194/angeo-24-779-2006},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006AnGeo..24..779S},
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@INPROCEEDINGS{2006cosp...36.2298J,
       author = {{J{\"a}msen}, T. and {Usoskin}, I.~G. and {Sakramo}, J. and {Kovaltsov}, G.~A.},
        title = "Cosmic ray spectrum during Forbush decreases: Ground based observations",
    booktitle = {36th COSPAR Scientific Assembly},
         year = 2006,
       volume = {36},
        pages = {2298},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006cosp...36.2298J},
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@INPROCEEDINGS{2006cosp...36.2293U,
       author = {{Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "Cosmic ray induced ionization in the atmosphere: An improved model",
    booktitle = {36th COSPAR Scientific Assembly},
         year = 2006,
       volume = {36},
        pages = {2293},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006cosp...36.2293U},
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@INPROCEEDINGS{2006cosp...36.2291V,
       author = {{Voculescu}, M. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A. and {Mursula}, K.},
        title = "Link between solar activity and cloud cover: Fact or artifact?",
    booktitle = {36th COSPAR Scientific Assembly},
         year = 2006,
       volume = {36},
        pages = {2291},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006cosp...36.2291V},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2006cosp...36.2287U,
       author = {{Usoskin}, I.~G.},
        title = "What do we know about the link between cosmic rays and climate?",
    booktitle = {36th COSPAR Scientific Assembly},
         year = 2006,
       volume = {36},
        pages = {2287},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006cosp...36.2287U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2006cosp...36.2282U,
       author = {{Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "Variations of cosmic ray flux: From decades to millennia",
    booktitle = {36th COSPAR Scientific Assembly},
         year = 2006,
       volume = {36},
        pages = {2282},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006cosp...36.2282U},
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@INPROCEEDINGS{2006cosp...36.2281U,
       author = {{Usoskin}, I.~G. and {Solanki}, S. and {Korte}, M.},
        title = "Multi-millennium changes of the geomagnetic field and solar activity",
    booktitle = {36th COSPAR Scientific Assembly},
         year = 2006,
       volume = {36},
        pages = {2281},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006cosp...36.2281U},
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@INPROCEEDINGS{2006cosp...36.1972A,
       author = {{Alanko-Huotari}, K. and {Usoskin}, I.~G. and {Mursula}, K.},
        title = "Empirical relations between the cosmic ray flux and the heliospheric current sheet tilt angle",
    booktitle = {36th COSPAR Scientific Assembly},
         year = 2006,
       volume = {36},
        pages = {1972},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006cosp...36.1972A},
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@INPROCEEDINGS{2006cosp...36.1862S,
       author = {{Starodubtsev}, S.~A. and {Grigoryev}, A.~V. and {Usoskin}, I.~G. and {Mursula}, K.},
        title = "Evidence for the generation of MHD- turbulence by energetic storm particles",
    booktitle = {36th COSPAR Scientific Assembly},
         year = 2006,
       volume = {36},
        pages = {1862},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006cosp...36.1862S},
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@INPROCEEDINGS{2006cosp...36..902S,
       author = {{Starodubtsev}, S.~A. and {Grigoryev}, A.~V. and {Usoskin}, I.~G. and {Mursula}, K.},
        title = "Fluctuations of cosmic rays and IMF in the vicinity of an interplanetary shock",
    booktitle = {36th COSPAR Scientific Assembly},
         year = 2006,
       volume = {36},
        pages = {902},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006cosp...36..902S},
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@INPROCEEDINGS{2006aogs....2..321U,
       author = {{Usoskin}, Ilya G. and {Kovaltsov}, Gennady A.},
        title = "Link Between Cosmic Rays and Clouds on Different Time Scales",
    booktitle = {Advances in Geosciences, Volume 2: Solar Terrestrial (ST)},
         year = 2006,
       volume = {2},
        pages = {321-331},
          doi = {10.1142/9789812707185\_0026},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006aogs....2..321U},
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@INPROCEEDINGS{2006aogs....2....1M,
       author = {{Miyahara}, Hiroko and {Sokoloff}, Dmitry and {Usoskin}, Ilya G.},
        title = "The Solar Cycle at the Maunder Minimum Epoch",
    booktitle = {Advances in Geosciences, Volume 2: Solar Terrestrial (ST)},
         year = 2006,
       volume = {2},
        pages = {1},
          doi = {10.1142/9789812707185\_0001},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006aogs....2....1M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2006AfrSk..10...29D,
       author = {{Damtie}, B. and {Bosinger}, T. and {Usoskin}, I.},
        title = "Establishing a Cosmic Ray Station and Other Space Research Facilities in Ethiopia",
      journal = {African Skies},
         year = 2006,
       volume = {10},
        pages = {29},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006AfrSk..10...29D},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2006A&A...445..703B,
       author = {{Berdyugina}, S.~V. and {Moss}, D. and {Sokoloff}, D. and {Usoskin}, I.~G.},
        title = "Active longitudes, nonaxisymmetric dynamos and phase mixing",
      journal = {\aap},
         year = 2006,
       volume = {445},
       number = {2},
        pages = {703-714},
          doi = {10.1051/0004-6361:20053454},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2006A&A...445..703B},
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@ARTICLE{2005NIMPA.554..286E,
       author = {{Enqvist}, T. and {Mattila}, A. and {F{\"o}hr}, V. and {J{\"a}ms{\'e}n}, T. and {Lehtola}, M. and {Narkilahti}, J. and {Joutsenvaara}, J. and {Nurmenniemi}, S. and {Peltoniemi}, J. and {Remes}, H. and {Sarkamo}, J. and {Shen}, C. and {Usoskin}, I.},
        title = "Measurements of muon flux in the Pyh{\"a}salmi underground laboratory",
      journal = {Nuclear Instruments and Methods in Physics Research A},
         year = 2005,
       volume = {554},
       number = {1-3},
        pages = {286-290},
          doi = {10.1016/j.nima.2005.08.065},
archivePrefix = {arXiv},
       eprint = {hep-ex/0506032},
 primaryClass = {hep-ex},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2005NIMPA.554..286E},
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@ARTICLE{2005JGRA..11012108U,
       author = {{Usoskin}, Ilya G. and {Alanko-Huotari}, Katja and {Kovaltsov}, Gennady A. and {Mursula}, Kalevi},
        title = "Heliospheric modulation of cosmic rays: Monthly reconstruction for 1951-2004",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2005,
       volume = {110},
       number = {A12},
          eid = {A12108},
        pages = {A12108},
          doi = {10.1029/2005JA011250},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2005JGRA..11012108U},
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@INPROCEEDINGS{2005AGUFMSH23A0318G,
       author = {{Gopalswamy}, N. and {Xie}, H. and {Yashiro}, S. and {Usoskin}, I.},
        title = "What is Unusual About the 2005 January 20 SEP Event?",
    booktitle = {AGU abstracts},
         year = 2005,
       volume = {2005},
          eid = {SH23A-0318},
        pages = {SH23A-0318},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2005AGUFMSH23A0318G},
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@ARTICLE{2005JGRA..11010102U,
       author = {{Usoskin}, I.~G. and {Sch{\"u}ssler}, M. and {Solanki}, S.~K. and {Mursula}, K.},
        title = "Solar activity, cosmic rays, and Earth's temperature: A millennium-scale comparison",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2005,
       volume = {110},
       number = {A10},
          eid = {A10102},
        pages = {A10102},
          doi = {10.1029/2004JA010946},
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@ARTICLE{2005A&A...441..347U,
       author = {{Usoskin}, I.~G. and {Berdyugina}, S.~V. and {Poutanen}, J.},
        title = "Preferred sunspot longitudes: non-axisymmetry and differential rotation",
      journal = {\aap},
         year = 2005,
       volume = {441},
       number = {1},
        pages = {347-352},
          doi = {10.1051/0004-6361:20053201},
archivePrefix = {arXiv},
       eprint = {astro-ph/0508422},
 primaryClass = {astro-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2005A&A...441..347U},
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@ARTICLE{2005Natur.436E...4S,
       author = {{Solanki}, S.~K. and {Usoskin}, I.~G. and {Kromer}, B. and {Sch{\"u}ssler}, M. and {Beer}, J.},
        title = "Climate:  How unusual is today's solar activity? (reply)",
      journal = {\nat},
         year = 2005,
       volume = {436},
       number = {7050},
        pages = {4-5},
          doi = {10.1038/nature04046},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2005Natur.436E...4S},
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@INPROCEEDINGS{2005ESASP.560...19U,
       author = {{Usoskin}, I.~G. and {Sch{\"u}ssler}, M. and {Solanki}, S.~K. and {Mursula}, K.},
        title = "Solar activity over the last 1150 years: does it correlate with climate?",
    booktitle = {13th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun},
         year = 2005,
       editor = {{Favata}, F. and {Hussain}, G.~A.~J. and {Battrick}, B.},
       series = {ESA Special Publication},
       volume = {560},
        pages = {19},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2005ESASP.560...19U},
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@INPROCEEDINGS{2005ICRC....2..465S,
       author = {{Starodubtsev}, S.~A. and {Turpanov}, A.~A. and {Kudela}, K. and {Usoskin}, I.~G. and {Yanke}, V.~G. and {Grigoryev}, V.~G. and {Neustroyev}, N.~I. and {Egorov}, A.~G. and {Prikhodko}, A.~N.},
        title = "Real-Time Cosmic Ray Distributed (RECORD) database: A status report",
    booktitle = {29th International Cosmic Ray Conference (ICRC29), Volume 2},
         year = 2005,
       series = {International Cosmic Ray Conference},
       volume = {2},
        pages = {465},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2005ICRC....2..465S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2005ICRC....2..247S,
       author = {{Starodubtsev}, S.~A. and {Usoskin}, I.~G. and {Grigoryev}, A.~V. and {Mursula}, K.},
        title = "Long-Term Modulation of the Cosmic Ray Fluctuation Spectrum: Spacecraft Measurements",
    booktitle = {29th International Cosmic Ray Conference (ICRC29), Volume 2},
         year = 2005,
       series = {International Cosmic Ray Conference},
       volume = {2},
        pages = {247},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2005ICRC....2..247S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2005ICRC....2...53A,
       author = {{Alanko}, K. and {Usoskin}, I.~G. and {Mursula}, K.},
        title = "The role of drifts in the galactic cosmic ray transport",
    booktitle = {29th International Cosmic Ray Conference (ICRC29), Volume 2},
         year = 2005,
       series = {International Cosmic Ray Conference},
       volume = {2},
        pages = {53},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2005ICRC....2...53A},
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@INPROCEEDINGS{2005ICRC....1..169G,
       author = {{Gopalswamy}, N. and {Xie}, H. and {Yashiro}, S. and {Usoskin}, I.},
        title = "Coronal Mass Ejections and Ground Level Enhancements",
    booktitle = {29th International Cosmic Ray Conference (ICRC29), Volume 1},
         year = 2005,
       series = {International Cosmic Ray Conference},
       volume = {1},
        pages = {169},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2005ICRC....1..169G},
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@ARTICLE{2004JASTP..66.1791U,
       author = {{Usoskin}, I.~G. and {Gladysheva}, O.~G. and {Kovaltsov}, G.~A.},
        title = "Cosmic ray-induced ionization in the atmosphere: spatial and temporal changes",
      journal = {Journal of Atmospheric and Solar-Terrestrial Physics},
         year = 2004,
       volume = {66},
       number = {18},
        pages = {1791-1796},
          doi = {10.1016/j.jastp.2004.07.037},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004JASTP..66.1791U},
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@ARTICLE{2004SoPh..224..335S,
       author = {{Starodubtsev}, S.~A. and {Usoskin}, I.~G. and {Mursula}, K.},
        title = "Rapid Cosmic Ray Fluctuations: Evidence for Cyclic Behaviour",
      journal = {\solphys},
         year = 2004,
       volume = {224},
       number = {1-2},
        pages = {335-343},
          doi = {10.1007/s11207-005-4178-4},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004SoPh..224..335S},
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@ARTICLE{2004SoPh..224...95K,
       author = {{Kovaltsov}, G.~A. and {Usoskin}, I.~G. and {Mursula}, K.},
        title = "An Upper Limit on Sunspot Activity During the Maunder Minimum",
      journal = {\solphys},
         year = 2004,
       volume = {224},
       number = {1-2},
        pages = {95-101},
          doi = {10.1007/s11207-005-4281-6},
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@ARTICLE{2004SoPh..224...37U,
       author = {{Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "Long-Term Solar Activity: Direct and Indirect Study",
      journal = {\solphys},
         year = 2004,
       volume = {224},
       number = {1-2},
        pages = {37-47},
          doi = {10.1007/s11207-005-3997-7},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004SoPh..224...37U},
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@ARTICLE{2004SoPh..224....3M,
       author = {{mursula}, kalevi and {usoskin}, ilya and {cliver}, edward},
        title = "Preface",
      journal = {\solphys},
         year = 2004,
       volume = {224},
       number = {1-2},
        pages = {3-4},
          doi = {10.1007/s11207-005-5685-z},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004SoPh..224....3M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2004Natur.431.1084S,
       author = {{Solanki}, S.~K. and {Usoskin}, I.~G. and {Kromer}, B. and {Sch{\"u}ssler}, M. and {Beer}, J.},
        title = "Unusual activity of the Sun during recent decades compared to the previous 11,000 years",
      journal = {\nat},
         year = 2004,
       volume = {431},
       number = {7012},
        pages = {1084-1087},
          doi = {10.1038/nature02995},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004Natur.431.1084S},
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@ARTICLE{2004GeoRL..3116109U,
       author = {{Usoskin}, I.~G. and {Marsh}, N. and {Kovaltsov}, G.~A. and {Mursula}, K. and {Gladysheva}, O.~G.},
        title = "Latitudinal dependence of low cloud amount on cosmic ray induced ionization",
      journal = {\grl},
         year = 2004,
       volume = {31},
       number = {16},
          eid = {L16109},
        pages = {L16109},
          doi = {10.1029/2004GL019507},
archivePrefix = {arXiv},
       eprint = {physics/0407066},
 primaryClass = {physics.ao-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004GeoRL..3116109U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2004apsp.conf...23B,
       author = {{Bobik}, P. and {Gervasi}, M. and {Grandi}, D. and {Rancoita}, P.~G. and {Usoskin}, I.~G.},
        title = "Solar Modulation Models:. a Comparison Through a 2d Stochastic Simulation",
    booktitle = {Astroparticle, Particle and Space Physics, Detectors and Medical Physics Applications},
         year = 2004,
        pages = {23-28},
          doi = {10.1142/9789812702708\_0004},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004apsp.conf...23B},
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@ARTICLE{2004PhRvL..92s9002U,
       author = {{Usoskin}, Ilya G. and {Solanki}, Sami K. and {Sch{\"u}ssler}, Manfred and {Mursula}, Kalevi},
        title = "Usoskin et al. Reply:",
      journal = {\prl},
         year = 2004,
       volume = {92},
       number = {19},
          eid = {199002},
        pages = {199002},
          doi = {10.1103/PhysRevLett.92.199002},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004PhRvL..92s9002U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2004cosp...35.2535S,
       author = {{Solanki}, S.~K. and {Usoskin}, I. and {Sch{\"u}ssler}, M.},
        title = "Solar activity and climate during the last millennium",
    booktitle = {35th COSPAR Scientific Assembly},
         year = 2004,
       volume = {35},
        pages = {2535},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004cosp...35.2535S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2004cosp...35.2504B,
       author = {{Bosinger}, T. and {Damtie}, B. and {Usoskin}, I.~G.},
        title = "Establishing space research capability in Ethiopia",
    booktitle = {35th COSPAR Scientific Assembly},
         year = 2004,
       volume = {35},
        pages = {2504},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004cosp...35.2504B},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2004cosp...35.2250A,
       author = {{Alanko}, K. and {Usoskin}, I.~G. and {Mursula}, K.},
        title = "Streaming of Galactic Cosmic Rays in the Heliosphere and the Role of Drifts",
    booktitle = {35th COSPAR Scientific Assembly},
         year = 2004,
       volume = {35},
        pages = {2250},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004cosp...35.2250A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2004cosp...35.1930S,
       author = {{Starodubtsev}, S.~A. and {Usoskin}, I.~G. and {Mursula}, K.},
        title = "Long-term variations in cosmic ray fluctuations",
    booktitle = {35th COSPAR Scientific Assembly},
         year = 2004,
       volume = {35},
        pages = {1930},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004cosp...35.1930S},
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@INPROCEEDINGS{2004cosp...35.1722B,
       author = {{Berdyugina}, S. and {Usoskin}, I.~G.},
        title = "Persistent active longitudes in the surface magnetic activity on the Sun",
    booktitle = {35th COSPAR Scientific Assembly},
         year = 2004,
       volume = {35},
        pages = {1722},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004cosp...35.1722B},
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@INPROCEEDINGS{2004cosp...35.1721U,
       author = {{Usoskin}, I.~G. and {Berdyugina}, S.},
        title = "Magnetic Activity Cycles on the Sun and Stars",
    booktitle = {35th COSPAR Scientific Assembly},
         year = 2004,
       volume = {35},
        pages = {1721},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004cosp...35.1721U},
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@INPROCEEDINGS{2004cosp...35.1685U,
       author = {{Usoskin}, I.~G. and {Kovaltsov}, G.~A. and {Mursula}, K. and {Alanko}, K.},
        title = "Cosmic ray modulation and global heliospheric parameters: Non-linear relations",
    booktitle = {35th COSPAR Scientific Assembly},
         year = 2004,
       volume = {35},
        pages = {1685},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004cosp...35.1685U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2004cosp...35.1683U,
       author = {{Usoskin}, I.~G. and {Marsh}, N. and {Mursula}, K. and {Gladysheva}, O.~G. and {Kovaltsov}, G.~A.},
        title = "Low cloud amount vs. Cosmic ray induced ionization: One-to-one relation",
    booktitle = {35th COSPAR Scientific Assembly},
         year = 2004,
       volume = {35},
        pages = {1683},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004cosp...35.1683U},
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@INPROCEEDINGS{2004cosp...35.1671U,
       author = {{Usoskin}, I.~G. and {Gladysheva}, O.~G. and {Kovaltsov}, G.~A.},
        title = "Cosmic ray induced ionization in the troposphere: Numerical model",
    booktitle = {35th COSPAR Scientific Assembly},
         year = 2004,
       volume = {35},
        pages = {1671},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004cosp...35.1671U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2004IAUS..219..128B,
       author = {{Berdyugina}, S.~B. and {Usoskin}, I.~G.},
        title = "Persistent Active Longitudes in Sunspot Activity: Sun-as-a-Star Approach",
    booktitle = {Stars as Suns : Activity, Evolution and Planets},
         year = 2004,
       editor = {{Dupree}, Andrea K. and {Benz}, Arnold O.},
       volume = {219},
        pages = {128},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004IAUS..219..128B},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2004A&A...413..745U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Solanki}, S. and {Sch{\"u}ssler}, M. and {Alanko}, K.},
        title = "Reconstruction of solar activity for the last millennium using $^{10}$Be data",
      journal = {\aap},
         year = 2004,
       volume = {413},
        pages = {745-751},
          doi = {10.1051/0004-6361:20031533},
archivePrefix = {arXiv},
       eprint = {astro-ph/0309556},
 primaryClass = {astro-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2004A&A...413..745U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2003SoPh..218..319U,
       author = {{Usoskin}, I.~G. and {Mursula}, K.},
        title = "Long-Term Solar Cycle Evolution: Review of Recent Developments",
      journal = {\solphys},
         year = 2003,
       volume = {218},
       number = {1},
        pages = {319-343},
          doi = {10.1023/B:SOLA.0000013049.27106.07},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003SoPh..218..319U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2003SoPh..218..295U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Reconstruction of Monthly and Yearly Group Sunspot Numbers From Sparse Daily Observations",
      journal = {\solphys},
         year = 2003,
       volume = {218},
       number = {1},
        pages = {295-305},
          doi = {10.1023/B:SOLA.0000013029.99907.97},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003SoPh..218..295U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2003PhRvL..91u1101U,
       author = {{Usoskin}, Ilya G. and {Solanki}, Sami K. and {Sch{\"u}ssler}, Manfred and {Mursula}, Kalevi and {Alanko}, Katja},
        title = "Millennium-Scale Sunspot Number Reconstruction: Evidence for an Unusually Active Sun since the 1940s",
      journal = {\prl},
         year = 2003,
       volume = {91},
       number = {21},
          eid = {211101},
        pages = {211101},
          doi = {10.1103/PhysRevLett.91.211101},
archivePrefix = {arXiv},
       eprint = {astro-ph/0310823},
 primaryClass = {astro-ph},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003PhRvL..91u1101U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2003ESASP.535..675K,
       author = {{Kozlov}, Valery and {Kudela}, Karel and {Starodubtsev}, Sergei and {Turpanov}, Alexey and {Usoskin}, Ilya and {Yanke}, Victor},
        title = "Neutron monitor database in real time",
    booktitle = {Solar Variability as an Input to the Earth's Environment},
         year = 2003,
       editor = {{Wilson}, Andrew},
       series = {ESA Special Publication},
       volume = {535},
        pages = {675-678},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003ESASP.535..675K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2003ESASP.535..637B,
       author = {{Bobik}, P. and {Gervasi}, M. and {Grandi}, D. and {Rancoita}, P.~G. and {Usoskin}, I.~G.},
        title = "2D stochastic simulation model of cosmic ray modulation: comparison with experimental data",
    booktitle = {Solar Variability as an Input to the Earth's Environment},
         year = 2003,
       editor = {{Wilson}, Andrew},
       series = {ESA Special Publication},
       volume = {535},
        pages = {637-640},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003ESASP.535..637B},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2003ESASP.535..165U,
       author = {{Usoskin}, Ilya G. and {Mursula}, Kalevi and {Kovaltsov}, Gennady A.},
        title = "On the reliability of monthly/yearly means calculated from sparse daily sunspot numbers",
    booktitle = {Solar Variability as an Input to the Earth's Environment},
         year = 2003,
       editor = {{Wilson}, Andrew},
       series = {ESA Special Publication},
       volume = {535},
        pages = {165-168},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003ESASP.535..165U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2003ESASP.535..161U,
       author = {{Usoskin}, Ilya G. and {Mursula}, Kalevi and {Kovaltsov}, Gennady A.},
        title = "The lost sunspot cycle: reanalysis of sunspot statistics",
    booktitle = {Solar Variability as an Input to the Earth's Environment},
         year = 2003,
       editor = {{Wilson}, Andrew},
       series = {ESA Special Publication},
       volume = {535},
        pages = {161-164},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003ESASP.535..161U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2003ESASP.535...25U,
       author = {{Usoskin}, I.~G. and {Mursula}, K.},
        title = "New standpoints in long-term solar cycle evolution: a review",
    booktitle = {Solar Variability as an Input to the Earth's Environment},
         year = 2003,
       editor = {{Wilson}, Andrew},
       series = {ESA Special Publication},
       volume = {535},
        pages = {25-36},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003ESASP.535...25U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2003AstL...29..594S,
       author = {{Starodubtsev}, S.~A. and {Usoskin}, I.~G.},
        title = "Long-Term Modulation of the Galactic Cosmic-Ray Fluctuation Spectrum",
      journal = {Astronomy Letters},
         year = 2003,
       volume = {29},
        pages = {594-598},
          doi = {10.1134/1.1607497},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003AstL...29..594S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2003AdSpR..32..615A,
       author = {{Alanko}, K. and {Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Heliospheric modulation strength: effective neutron monitor energy",
      journal = {Advances in Space Research},
         year = 2003,
       volume = {32},
       number = {4},
        pages = {615-620},
          doi = {10.1016/S0273-1177(03)00348-X},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003AdSpR..32..615A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2003ICRC....7.4041U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Solanki}, S.~K. and {Sch{\"{u}}ssler}, M. and {Kovaltsov}, G.~A.},
        title = "Long-Term Cosmic Ray Intensities: Physical Reconstruction",
    booktitle = {International Cosmic Ray Conference},
         year = 2003,
       series = {International Cosmic Ray Conference},
       volume = {7},
        pages = {4041},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003ICRC....7.4041U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2003ICRC....7.3905S,
       author = {{Usoskin}, Ilya G. and {Starodubtsev}, S.},
        title = "Galactic Cosmic Ray Fluctuations: Long-Term Modulation of Power Spectrum",
    booktitle = {International Cosmic Ray Conference},
         year = 2003,
       series = {International Cosmic Ray Conference},
       volume = {7},
        pages = {3905},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003ICRC....7.3905S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2003ICRC....7.3901A,
       author = {{Alanko}, K.~M. and {Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Effective Energy of Neutron Monitors",
    booktitle = {International Cosmic Ray Conference},
         year = 2003,
       series = {International Cosmic Ray Conference},
       volume = {7},
        pages = {3901},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003ICRC....7.3901A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2003ICRC....7.3851A,
       author = {{Alanko}, K.~M. and {Usoskin}, Ilya and {Mursula}, Kalevi and {Kovaltsov}, Gennady A.},
        title = "A 2D Stochastic Simulation of Galactic Cosmic Rays Transport in the Heliosphere",
    booktitle = {International Cosmic Ray Conference},
         year = 2003,
       series = {International Cosmic Ray Conference},
       volume = {7},
        pages = {3851},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003ICRC....7.3851A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2003ICRC....7.3803U,
       author = {{Usoskin}, I.~G. and {Kovaltsov}, G.~A. and {Mursula}, K. and {Alkano}, K.},
        title = "Long-Term Cosmic Ray Modulation by Heliospheric Parameters: Non-linear Relations",
    booktitle = {International Cosmic Ray Conference},
         year = 2003,
       series = {International Cosmic Ray Conference},
       volume = {7},
        pages = {3803},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003ICRC....7.3803U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2003ICRC....6.3473K,
       author = {{Usoskin}, I. and {Kozlov}, Valery and {Ksenofontov}, Leonid, Kudela, Karel and {Starodubtsev}, Sergei and {Turpanov}, Alexey and {Yanke}, Victor},
        title = "REal-time COsmic Ray Database (RECORD)",
    booktitle = {International Cosmic Ray Conference},
         year = 2003,
       series = {International Cosmic Ray Conference},
       volume = {6},
        pages = {3473},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003ICRC....6.3473K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2003A&A...405.1121B,
       author = {{Berdyugina}, S.~V. and {Usoskin}, I.~G.},
        title = "Active longitudes in sunspot activity: Century scale persistence",
      journal = {\aap},
         year = 2003,
       volume = {405},
        pages = {1121-1128},
          doi = {10.1051/0004-6361:20030748},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003A&A...405.1121B},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2003A&A...403..743U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "The lost sunspot cycle: Reanalysis of sunspot statistics",
      journal = {\aap},
         year = 2003,
       volume = {403},
        pages = {743-748},
          doi = {10.1051/0004-6361:20030398},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003A&A...403..743U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2003EAEJA.....8819U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "The lost sunspot cycle: Reanalyzing the sunspot statistics",
    booktitle = {EGS - AGU - EUG Joint Assembly},
         year = 2003,
       series = {EGS - AGU - EUG Joint Assembly},
          eid = {8819},
        pages = {8819},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003EAEJA.....8819U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2003AnGeo..21..863M,
       author = {{Mursula}, K. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "Reconstructing the long-term cosmic ray intensity: linear relations do not work",
      journal = {Annales Geophysicae},
         year = 2003,
       volume = {21},
       number = {4},
        pages = {863-867},
          doi = {10.5194/angeo-21-863-2003},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2003AnGeo..21..863M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2002GeoRL..29.2183U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Lost sunspot cycle in the beginning of Dalton minimum: New evidence and consequences",
      journal = {\grl},
         year = 2002,
       volume = {29},
       number = {24},
          eid = {2183},
        pages = {2183},
          doi = {10.1029/2002GL015640},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2002GeoRL..29.2183U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2002ESASP.506..863U,
       author = {{Usoskin}, I.~G. and {Mursala}, K. and {Kovaltsov}, G.~A.},
        title = "Simulating regularity and randomness in sunspot activity",
    booktitle = {Solar Variability: From Core to Outer Frontiers},
         year = 2002,
       editor = {{Wilson}, A.},
       series = {ESA Special Publication},
       volume = {2},
        pages = {863-866},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2002ESASP.506..863U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2002JGRA..107.1374U,
       author = {{Usoskin}, Ilya G. and {Mursula}, Kalevi and {Solanki}, Sami K. and {Sch{\"u}ssler}, Manfred and {Kovaltsov}, Gennady A.},
        title = "A physical reconstruction of cosmic ray intensity since 1610",
      journal = {Journal of Geophysical Research (Space Physics)},
         year = 2002,
       volume = {107},
       number = {A11},
          eid = {1374},
        pages = {1374},
          doi = {10.1029/2002JA009343},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2002JGRA..107.1374U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2002SoPh..207..389U,
       author = {{Usoskin}, I.~G. and {Alanko}, K. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Heliospheric modulation strength during the neutron monitor era",
      journal = {\solphys},
         year = 2002,
       volume = {207},
       number = {2},
        pages = {389-399},
          doi = {10.1023/A:1016266801300},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2002SoPh..207..389U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2002ESASP.477..463M,
       author = {{Mursula}, K. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "Long-term cosmic ray intensity vs. solar proxies: a simple linear relation does not work",
    booktitle = {Solspa 2001, Proceedings of the Second Solar Cycle and Space Weather Euroconference},
         year = 2002,
       editor = {{Sawaya-Lacoste}, Huguette},
       series = {ESA Special Publication},
       volume = {477},
        pages = {463-466},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2002ESASP.477..463M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2002ESASP.477..257U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "The start of the Dalton minimum: Was one sunspot cycle lost in late XVIII century?",
    booktitle = {Solspa 2001, Proceedings of the Second Solar Cycle and Space Weather Euroconference},
         year = 2002,
       editor = {{Sawaya-Lacoste}, Huguette},
       series = {ESA Special Publication},
       volume = {477},
        pages = {257-260},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2002ESASP.477..257U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2002cosp...34E2095V,
       author = {{Vashenyuk}, E. and {Gvozdevsky}, B. and {Pchelkin}, V. and {Usoskin}, I. and {Mursula}, K. and {Kovaltsov}, G.},
        title = "Direct penetration of anisotropic solar proton flux through the postnoon magnetopause: evidence of magnetosphere anomaly?",
    booktitle = {34th COSPAR Scientific Assembly},
         year = 2002,
       volume = {34},
          eid = {2095},
        pages = {2095},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2002cosp...34E2095V},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2002cosp...34E.902U,
       author = {{Usoskin}, I. and {Mursula}, K. and {Solanki}, S. and {Shuessler}, M. and {Kovaltsov}, G.},
        title = "Physical reconstruction of the long-term heliospheric modulation of cosmic rays",
    booktitle = {34th COSPAR Scientific Assembly},
         year = 2002,
       volume = {34},
          eid = {902},
        pages = {902},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2002cosp...34E.902U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2002cosp...34E.901U,
       author = {{Usoskin}, I. and {Solanki}, S. and {Sch{\"{u}}ssler}, M. and {Mursula}, K. and {Kovaltsov}, G.},
        title = "Physical reconstruction of long-term solar activity",
    booktitle = {34th COSPAR Scientific Assembly},
         year = 2002,
       volume = {34},
          eid = {901},
        pages = {901},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2002cosp...34E.901U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2002cosp...34E.868U,
       author = {{Usoskin}, I. and {Alanko}, K. and {Mursula}, K. and {Kovaltsov}, G.},
        title = "Heliospheric modulation strength during the neutron monitor era",
    booktitle = {34th COSPAR Scientific Assembly},
         year = 2002,
       volume = {34},
          eid = {868},
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@INPROCEEDINGS{2002cosp...34E.864B,
       author = {{Berdyugina}, S. and {Usoskin}, I.},
        title = "Persistent active longitudes in sunspot activity",
    booktitle = {34th COSPAR Scientific Assembly},
         year = 2002,
       volume = {34},
          eid = {864},
        pages = {864},
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@INPROCEEDINGS{2002cosp...34E.862U,
       author = {{Usoskin}, I. and {Mursula}, K. and {Nevanlinna}, H. and {Kovaltsov}, G.},
        title = "Missed sunspot cycle in late XVIII century: new evidences",
    booktitle = {34th COSPAR Scientific Assembly},
         year = 2002,
       volume = {34},
          eid = {862},
        pages = {862},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2002cosp...34E.862U},
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@INPROCEEDINGS{2002EGSGA..27.5173U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Solanki}, S.~K. and {Sch{\"u}ssler}, M. and {Kovaltsov}, G.~A.},
        title = "Reconstruction of Cosmic Ray Intensity Since 1610",
    booktitle = {EGS General Assembly Conference Abstracts},
         year = 2002,
       series = {EGS General Assembly Conference Abstracts},
          eid = {5173},
        pages = {5173},
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@INPROCEEDINGS{2002EGSGA..27.3897U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Was One Sunspot Cycle Lost In Late Xviii Century?",
    booktitle = {EGS General Assembly Conference Abstracts},
         year = 2002,
       series = {EGS General Assembly Conference Abstracts},
          eid = {3897},
        pages = {3897},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2002EGSGA..27.3897U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2002EGSGA..27.3884U,
       author = {{Usoskin}, I.~G. and {Alanko}, K. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Heliospheric Modulation Strength During The Neutron Monitor Era",
    booktitle = {EGS General Assembly Conference Abstracts},
         year = 2002,
       series = {EGS General Assembly Conference Abstracts},
          eid = {3884},
        pages = {3884},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2002EGSGA..27.3884U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2002EGSGA..27.3882M,
       author = {{Mursula}, K. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "Long-term Cosmic Ray Intensity Vs. Solar Proxies: A Simple Linear Relation Does Not Work",
    booktitle = {EGS General Assembly Conference Abstracts},
         year = 2002,
       series = {EGS General Assembly Conference Abstracts},
          eid = {3882},
        pages = {3882},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2002EGSGA..27.3882M},
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@ARTICLE{2002AdSpR..29.1979M,
       author = {{Mursula}, K. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "A 22-year cycle in sunspot activity",
      journal = {Advances in Space Research},
         year = 2002,
       volume = {29},
       number = {12},
        pages = {1979-1984},
          doi = {10.1016/S0273-1177(02)00244-2},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2002AdSpR..29.1979M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2002AdSpR..29.1707G,
       author = {{Gladysheva}, O.~G. and {Kocharov}, G.~E. and {Kovaltsov}, G.~A. and {Usoskin}, I.~G.},
        title = "Nitrate abundance in polar ice during the great solar activity minimum",
      journal = {Advances in Space Research},
         year = 2002,
       volume = {29},
       number = {11},
        pages = {1707-1711},
          doi = {10.1016/S0273-1177(02)00114-X},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2002AdSpR..29.1707G},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2001JGR...10629355B,
       author = {{Boella}, G. and {Gervasi}, M. and {Mariani}, S. and {Rancoita}, P.~G. and {Usoskin}, I.~G.},
        title = "Evidence for charge drift modulation at intermediate solar activity from the flux variation of protons and {\ensuremath{\alpha}} particles",
      journal = {\jgr},
         year = 2001,
       volume = {106},
       number = {A12},
        pages = {29355-29362},
          doi = {10.1029/2001JA900075},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001JGR...10629355B},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2001JGR...10616039U,
       author = {{Usoskin}, Ilya G. and {Mursula}, Kalevi and {Kovaltsov}, Gennady A.},
        title = "Heliospheric modulation of cosmic rays and solar activity during the Maunder minimum",
      journal = {\jgr},
         year = 2001,
       volume = {106},
       number = {A8},
        pages = {16039-16046},
          doi = {10.1029/2000JA000105},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001JGR...10616039U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@PROCEEDINGS{2001ICRC...27.....G,
        title = "Cosmogenic Variations of Nitrate Abundance in Polar Ice",
    booktitle = {27th International Cosmic Ray Conference (ICRC27)},
         year = 2001,
       series = {International Cosmic Ray Conference},
       volume = {27},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001ICRC...27.....G},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2001ICRC...10.4191G,
       author = {{Gladysheva}, O.~G. and {Dmitriev}, P.~B. and {Usoskin}, I.~G. and {Barkov}, N.~I. and {Ekaykin}, A.~A. and {Nikanorov}, V.~V.},
        title = "Nitrate abundance in polar snow during last 50 year: connection to atmospheric ionization",
    booktitle = {International Cosmic Ray Conference},
         year = 2001,
       series = {International Cosmic Ray Conference},
       volume = {10},
        pages = {4191},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001ICRC...10.4191G},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2001ICRC...10.4056B,
       author = {{Bobik}, P. and {Kudela}, K. and {Usoskin}, I.},
        title = "Geomagnetic cutoff Penumbra structure: approach by transmissivity function",
    booktitle = {International Cosmic Ray Conference},
         year = 2001,
       series = {International Cosmic Ray Conference},
       volume = {10},
        pages = {4056},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001ICRC...10.4056B},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2001ICRC....9.3842U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Kangas}, J.},
        title = "On-Line Database of Cosmic Ray Intensities*",
    booktitle = {International Cosmic Ray Conference},
         year = 2001,
       series = {International Cosmic Ray Conference},
       volume = {9},
        pages = {3842},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001ICRC....9.3842U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2001ICRC....9.3838M,
       author = {{Mursula}, K. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "Cosmic ray intensity vs. solar indices: Is there a simple linear relation?",
    booktitle = {International Cosmic Ray Conference},
         year = 2001,
       series = {International Cosmic Ray Conference},
       volume = {9},
        pages = {3838},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001ICRC....9.3838M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2001ICRC....9.3810U,
       author = {{Usoskin}, I.~G. and {Alanko}, K. and {Mursula}, K. and {Kudela}, K. and {Kovaltsov}, G.~A.},
        title = "Heliospheric modulation strength during the neutron monitor epoch",
    booktitle = {International Cosmic Ray Conference},
         year = 2001,
       series = {International Cosmic Ray Conference},
       volume = {9},
        pages = {3810},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001ICRC....9.3810U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2001ICRC....9.3791U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Odd and even cycles in cosmic rays and solar activity",
    booktitle = {International Cosmic Ray Conference},
         year = 2001,
       series = {International Cosmic Ray Conference},
       volume = {9},
        pages = {3791},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001ICRC....9.3791U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2001ICRC....8.3383V,
       author = {{Vashenyuk}, E.~V. and {Gvozdevsky}, B.~B. and {Phelkin}, V.~V. and {Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "The GLE of 14 July 2000: comparative analysis of increase effect on close neutron monitors in Apatity and Oulu",
    booktitle = {International Cosmic Ray Conference},
         year = 2001,
       series = {International Cosmic Ray Conference},
       volume = {8},
        pages = {3383},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001ICRC....8.3383V},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2001ICRC....3.1250J,
       author = {{Jaemsen}, T. and {Elo}, A. -M. and {Kangas}, J. and {Mursula}, K. and {Peltoniemi}, J. and {Usoskin}, I.~G. and {Vallinkoski}, M. and {Valtonen}, E.},
        title = "A new multilevel experiment MUG for observing muon fluxes underground",
    booktitle = {International Cosmic Ray Conference},
         year = 2001,
       series = {International Cosmic Ray Conference},
       volume = {3},
        pages = {1250},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001ICRC....3.1250J},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2001ICRC....3.1249E,
       author = {{Elo}, A. -M. and {Jaemsen}, T. and {Kangas}, J. and {Mursula}, K. and {Peltoniemi}, J. and {Usoskin}, I.~G. and {Vallinkoski}, M. and {Valtonen}, E.},
        title = "The MUG experiment for observing muon fluxes underground: test data and development plans",
    booktitle = {International Cosmic Ray Conference},
         year = 2001,
       series = {International Cosmic Ray Conference},
       volume = {3},
        pages = {1249},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001ICRC....3.1249E},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2001AGUSM..SH52A03U,
       author = {{Usoskin}, I. and {Mursula}, K.},
        title = "Cosmic Ray Intensity vs. Solar Coronal Source Flux: Is There a Simple Relation?",
    booktitle = {AGU Spring Meeting Abstracts},
         year = 2001,
       volume = {2001},
          eid = {SH52A-03},
        pages = {SH52A-03},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001AGUSM..SH52A03U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2001AGUSM..SH41A22U,
       author = {{Usoskin}, I. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Regular and Random Components of Sunspot Activity During Active Sun and Great Minima: Model Simulation",
    booktitle = {AGU Spring Meeting Abstracts},
         year = 2001,
       volume = {2001},
          eid = {SH41A-22},
        pages = {SH41A-22},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001AGUSM..SH41A22U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2001A&A...370L..31U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Was one sunspot cycle lost in late XVIII century?",
      journal = {\aap},
         year = 2001,
       volume = {370},
        pages = {L31-L34},
          doi = {10.1051/0004-6361:20010319},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001A&A...370L..31U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2001SoPh..199..187U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Simulation of Sunspot Activity During Active Sun and Great Minima Using Regular, Random and Relic Fields",
      journal = {\solphys},
         year = 2001,
       volume = {199},
       number = {1},
        pages = {187-199},
          doi = {10.1023/A:1010343028059},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001SoPh..199..187U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2001SoPh..198...51M,
       author = {{Mursula}, K. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "Persistent 22-year cycle in sunspot activity: Evidence for a relic solar magnetic field",
      journal = {\solphys},
         year = 2001,
       volume = {198},
       number = {1},
        pages = {51-56},
          doi = {10.1023/A:1005218414790},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001SoPh..198...51M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@MISC{2001STIN...0253711U,
       author = {{Usoskin}, Ilya and {Kultima}, Johannes},
        title = "OULU Neutron Monitor Cosmic Ray Data, January 2000 - December 2000",
 howpublished = {Technical Report, Rept-89},
         year = 2001,
        pages = {53711},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001STIN...0253711U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2001AdSpR..27..571U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Kananen}, H. and {Kovaltsov}, G.~A.},
        title = "Dependence of cosmic rays on solar activity for odd and even solar cycles",
      journal = {Advances in Space Research},
         year = 2001,
       volume = {27},
       number = {3},
        pages = {571-576},
          doi = {10.1016/S0273-1177(01)00084-9},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001AdSpR..27..571U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2001AdSpR..27..565U,
       author = {{Usoskin}, I.~G. and {Bobik}, P. and {Gladysheva}, O.~G. and {Kananen}, H. and {Kovaltsov}, G.~A. and {Kudela}, K.},
        title = "Sensitivity of a neutron monitor to galactic cosmic rays",
      journal = {Advances in Space Research},
         year = 2001,
       volume = {27},
       number = {3},
        pages = {565-569},
          doi = {10.1016/S0273-1177(01)00094-1},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2001AdSpR..27..565U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2000A&A...354L..33U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Cyclic behaviour of sunspot activity during the Maunder minimum",
      journal = {\aap},
         year = 2000,
       volume = {354},
        pages = {L33-L36},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2000A&A...354L..33U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{2000PhLB..472..215A,
       author = {{Alcaraz}, J. and {Alvisi}, D. and {Alpat}, B. and {Ambrosi}, G. and {Anderhub}, H. and {Ao}, L. and {Arefiev}, A. and {Azzarello}, P. and {Babucci}, E. and {Baldini}, L. and et al.},
        title = "Protons in near earth orbit",
      journal = {Physics Letters B},
         year = 2000,
       volume = {472},
       number = {1-2},
        pages = {215-226},
          doi = {10.1016/S0370-2693(99)01427-6},
archivePrefix = {arXiv},
       eprint = {hep-ex/0002049},
 primaryClass = {hep-ex},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2000PhLB..472..215A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{2000IAUJD...7E..28U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "A 22-year cycle in sunspot activity",
    booktitle = {IAU Joint Discussion},
         year = 2000,
       series = {IAU Joint Discussion},
       volume = {24},
          eid = {28},
        pages = {28},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2000IAUJD...7E..28U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2000IAUJD...7E..27U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Regular and random components of sunspot activity: model simulations",
    booktitle = {IAU Joint Discussion},
         year = 2000,
       series = {IAU Joint Discussion},
       volume = {24},
          eid = {27},
        pages = {27},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2000IAUJD...7E..27U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2000ESASP.463..447U,
       author = {{Usoskin}, I.~G. and {Mursula}, K. and {Kovaltsov}, G.~A.},
        title = "Regular and Random Components of Sunspot Activity during Active Sun and Great Minima: Model Simulation",
    booktitle = {The Solar Cycle and Terrestrial Climate, Solar and Space weather},
         year = 2000,
       editor = {{Wilson}, A.},
       series = {ESA Special Publication},
       volume = {463},
        pages = {447},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2000ESASP.463..447U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{2000ESASP.463..387M,
       author = {{Mursula}, K. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "Persistent 22-year Cycle in Sunspot Activity: Evidence for a Relic Solar Magnetic Field",
    booktitle = {The Solar Cycle and Terrestrial Climate, Solar and Space weather},
         year = 2000,
       editor = {{Wilson}, A.},
       series = {ESA Special Publication},
       volume = {463},
        pages = {387},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2000ESASP.463..387M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{1999CzJPh..49.1743U,
       author = {{Usoskin}, I.~G. and {Gladysheva}, O.~G. and {Bobik}, P. and {Kudela}, K. and {Kananen}, H.},
        title = "Connections between neutron monitor count rate and solar modulation strength",
      journal = {Czechoslovak Journal of Physics},
         year = 1999,
       volume = {49},
       number = {12},
        pages = {1743-1749},
          doi = {10.1023/A:1022888121484},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1999CzJPh..49.1743U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{1999PhLB..461..387A,
       author = {{Alcaraz}, J. and {Alvisi}, D. and {Alpat}, B. and {Ambrosi}, G. and {Anderhub}, H. and {Ao}, L. and {Arefiev}, A. and {Azzarello}, P. and {Babucci}, E. and {Baldini}, L. and et al.},
        title = "Search for antihelium in cosmic rays.",
      journal = {Physics Letters B},
         year = 1999,
       volume = {461},
       number = {4},
        pages = {387-396},
          doi = {10.1016/S0370-2693(99)00874-6},
archivePrefix = {arXiv},
       eprint = {hep-ex/0002048},
 primaryClass = {hep-ex},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1999PhLB..461..387A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{1999NuPhS..78...26G,
       author = {{Gervasi}, M. and {Rancoita}, P.~G. and {Usoskin}, I.~G. and {Kovaltsov}, G.~A.},
        title = "Monte-Carlo approach to Galactic Cosmic Ray propagation in the Heliosphere",
      journal = {Nuclear Physics B Proceedings Supplements},
         year = 1999,
       volume = {78},
       number = {1-3},
        pages = {26-31},
          doi = {10.1016/S0920-5632(99)00518-6},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1999NuPhS..78...26G},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{1999foap.conf..379B,
       author = {{Boella}, G. and {Gervasi}, M. and {Potenza}, M.~A.~C. and {Rancoita}, P.~G. and {Usoskin}, I.},
        title = "Secondary production antiproton flux: A comparison between interstellar models and expected flux at the Earth - presented by M. A. C. Potenza",
    booktitle = {Vulcano Workshop 1998: Frontier Objects in Astrophysics and Particle Physics},
         year = 1999,
       editor = {{Giovannelli}, F. and {Mannocchi}, G.},
       volume = {65},
        pages = {379},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1999foap.conf..379B},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{1999ICRC....7..127U,
       author = {{Usoskin}, I.~G.},
        title = "Time Evolution of Solar Activity and Cosmic Ray Intensity during the Maunder Minimum",
    booktitle = {26th International Cosmic Ray Conference (ICRC26), Volume 7},
         year = 1999,
       series = {International Cosmic Ray Conference},
       volume = {7},
        pages = {127},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1999ICRC....7..127U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{1998APh.....9..261B,
       author = {{Boella}, G. and {Gervasi}, M. and {Potenza}, M.~A.~C. and {Rancoita}, P.~G. and {Usoskin}, I.},
        title = "Modulated antiproton fluxes for interstellar production models",
      journal = {Astroparticle Physics},
         year = 1998,
       volume = {9},
       number = {3},
        pages = {261-267},
          doi = {10.1016/S0927-6505(98)00022-X},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1998APh.....9..261B},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{1998JGR...103.9567U,
       author = {{Usoskin}, I.~G. and {Kananen}, H. and {Mursula}, K. and {Tanskanen}, P. and {Kovaltsov}, G.~A.},
        title = "Correlative study of solar activity and cosmic ray intensity",
      journal = {\jgr},
         year = 1998,
       volume = {103},
       number = {A5},
        pages = {9567-9574},
          doi = {10.1029/97JA03782},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1998JGR...103.9567U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{1998cosm.work..273B,
       author = {{Boella}, G. and {Gervasi}, M. and {Potenza}, M.~A.~C. and {Rancoita}, P.~G. and {Usoskin}, I.},
        title = "Effect of the Solar Modulation at Minimum Activity on Expected Ratio of Antiproton to Proton Flux",
    booktitle = {COSMO-97, First International Workshop on Particle Physics and the Early Universe},
         year = 1998,
       editor = {{Roszkowski}, Leszek},
        pages = {273-275},
          doi = {10.1142/9789814447263\_0032},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1998cosm.work..273B},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{1997ESASP.415..491U,
       author = {{Usoskin}, I.~G. and {Kananen}, H. and {Mursula}, K. and {Tanskanen}, P. and {Kovaltsov}, G.~A.},
        title = "Period of Unusual Modulation of Cosmic Ray Intensity: The Declining Phase of Cycle 20",
    booktitle = {Correlated Phenomena at the Sun, in the Heliosphere and in Geospace},
         year = 1997,
       editor = {{Wilson}, A.},
       series = {ESA Special Publication},
       volume = {415},
        pages = {491},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1997ESASP.415..491U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{1997SoPh..176..201M,
       author = {{Mursula}, K. and {Usoskin}, I. and {Zieger}, B.},
        title = "On the Claimed 5.5-year Periodicity in Solar Activity",
      journal = {\solphys},
         year = 1997,
       volume = {176},
       number = {1},
        pages = {201-210},
          doi = {10.1023/A:1004982203293},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1997SoPh..176..201M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{1997SoPh..172..271K,
       author = {{Kocharov}, L.~G. and {Torsti}, J. and {Tang}, F. and {Zirin}, H. and {Kovaltsov}, G.~A. and {Usoskin}, I.~G.},
        title = "Impact of Magnetic Environment on the Generation of High-Energy Neutrons at the Sun",
      journal = {\solphys},
         year = 1997,
       volume = {172},
       number = {1-2},
        pages = {271-278},
          doi = {10.1023/A:1004986526577},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1997SoPh..172..271K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{1997AnGeo..15..375U,
       author = {{Usoskin}, I.~G. and {Kovaltsov}, G.~A. and {Kananen}, H. and {Tanskanen}, P.},
        title = "The World Neutron Monitor Network as a tool for the study of solar neutrons",
      journal = {Annales Geophysicae},
         year = 1997,
       volume = {15},
       number = {4},
        pages = {375-386},
          doi = {10.1007/s00585-997-0375-9},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1997AnGeo..15..375U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@ARTICLE{1997SoPh..170..447U,
       author = {{Usoskin}, I.~G. and {Kovaltsov}, G.~A. and {Kananen}, H. and {Mursula}, K. and {Tanskanen}, P.~J.},
        title = "Phase Evolution of Solar Activity and Cosmic-Ray Variation Cycles",
      journal = {\solphys},
         year = 1997,
       volume = {170},
       number = {2},
        pages = {447-452},
          doi = {10.1023/A:1004971320041},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1997SoPh..170..447U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{1997ICRC....2..201U,
       author = {{Usoskin}, I.~G. and {Kovaltsov}, G.~A. and {Kananen}, H. and {Mursula}, K. and {Tanskanen}, P.},
        title = "Period of Unusual Cosmic Ray Modulation in Late 20th Cycle: Correlative Study of Cosmic Ray variations vs. Solar Activity",
    booktitle = {International Cosmic Ray Conference},
         year = 1997,
       series = {International Cosmic Ray Conference},
       volume = {2},
        pages = {201},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1997ICRC....2..201U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{1997ICRC....1..169G,
       author = {{Galper}, A.~M. and {Luchkov}, B.~I. and {Ozerov}, Yu. V. and {Khodarovich}, A.~M. and {Rinchinov}, S.~B. and {Kovaltsov}, G.~A. and {Usoskin}, I.~G.},
        title = "Phases of Charged Particles Acceleration during Powerful Solar Gamma-Flares Detected by the Gamma - 1",
    booktitle = {International Cosmic Ray Conference},
         year = 1997,
       series = {International Cosmic Ray Conference},
       volume = {1},
        pages = {169},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1997ICRC....1..169G},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{1997ICRC....1...65K,
       author = {{Kocharov}, L.~G. and {Kovaltsov}, G. and {Torsti}, J. and {Usoskin}, I.},
        title = "Impact of Magnetic Environment on the Generation of High-Energy Neutrons and Gamma-Rays During Solar Flares",
    booktitle = {International Cosmic Ray Conference},
         year = 1997,
       series = {International Cosmic Ray Conference},
       volume = {1},
        pages = {65},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1997ICRC....1...65K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
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@INPROCEEDINGS{1997ICRC....1...49K,
       author = {{Kananen}, H. and {Kovaltsov}, G.~A. and {Tanskanen}, P. and {Usoskin}, I.~G.},
        title = "Direct Deduction of the Number of Neutrons Injected from the Sun on the Basis of Neutron Monitor Response",
    booktitle = {International Cosmic Ray Conference},
         year = 1997,
       series = {International Cosmic Ray Conference},
       volume = {1},
        pages = {49},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1997ICRC....1...49K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{1996SoPh..169..181K,
       author = {{Kocharov}, L.~G. and {Torsti}, J. and {Vainio}, R. and {Kovaltsov}, G.~A. and {Usoskin}, I.~G.},
        title = "A Joint Analysis of High-Energy Neutrons and Neutron-Decay Protons from a Flare",
      journal = {\solphys},
         year = 1996,
       volume = {169},
       number = {1},
        pages = {181-207},
          doi = {10.1007/BF00153840},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1996SoPh..169..181K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{1996AIPC..374..246K,
       author = {{Kocharov}, Leon and {Kovaltsov}, Gennadi and {Torsti}, Jarmo and {Usoskin}, Ilya and {Zirin}, Harold and {Anttila}, Antti and {Vainio}, Rami},
        title = "The 1990 May 24 solar flare and cosmic ray event",
    booktitle = {High energy solar Physics},
         year = 1996,
       editor = {{Ramaty}, Reuven and {Mandzhavidze}, Natalie and {Hua}, Xin-Min},
       series = {Am.\ Inst.\ Phys.\ Conf.},
       volume = {374},
        pages = {246-255},
          doi = {10.1063/1.50960},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1996AIPC..374..246K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{1996JMoPS...6..399G,
       author = {{Galper}, A.~M. and {Zverev}, V.~G. and {Luchkov}, B.~I. and {Ozerov}, Yu. V. and {Khodarovitch}, A.~M. and {Kovaltsov}, G.~A. and {Usoskin}, I.~G.},
        title = "Temporal and spectral characteristics of solar gamma flares observed in the Gamma-1 experiment.",
      journal = {J. Mosc. Phys. Soc},
         year = 1996,
       volume = {6},
       number = {4},
        pages = {399-406},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1996JMoPS...6..399G},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{1995SoPh..161..407K,
       author = {{Kocharov}, L.~G. and {Lee}, Jeongwoo W. and {Wang}, H. and {Zirin}, H. and {Kovaltsov}, G.~A. and {Usoskin}, I.~G.},
        title = "Erratum: The 1991 March 22 Flare: Possible Anistrophy of High-Energy Neutral Emission",
      journal = {\solphys},
         year = 1995,
       volume = {161},
        pages = {407},
          doi = {10.1007/BF00732078},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1995SoPh..161..407K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{1995SoPh..158..395K,
       author = {{Kovaltsov}, G.~A. and {Usoskin}, I.~G. and {Kocharov}, L.~G. and {Kananen}, H. and {Tanskanen}, P.~J.},
        title = "Neutron Monitor Data on the 15 June 1991 Flare: Neutrons as a Test for Proton Acceleration Scenario",
      journal = {\solphys},
         year = 1995,
       volume = {158},
       number = {2},
        pages = {395-398},
          doi = {10.1007/BF00795674},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1995SoPh..158..395K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{1995SoPh..158...95K,
       author = {{Kocharov}, L.~G. and {Lee}, Jeongwoo W. and {Wang}, H. and {Zirin}, H. and {Kovaltsov}, G.~A. and {Usoskin}, I.~G.},
        title = "The 1991 March 22 Flare: Possible Anisotropy of High-Energy Neutral Emission",
      journal = {\solphys},
         year = 1995,
       volume = {158},
       number = {1},
        pages = {95-114},
          doi = {10.1007/BF00680837},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1995SoPh..158...95K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{1995ICRC....4..159K,
       author = {{Kocharov}, L.~G. and {Kovaltsov}, G.~A. and {Torsti}, J. and {Usoskin}, I.~G. and {Zirin}, H.},
        title = "Correlative Investigations of the 1990 May 24 Solar Flare",
    booktitle = {International Cosmic Ray Conference},
         year = 1995,
       series = {International Cosmic Ray Conference},
       volume = {4},
        pages = {159},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1995ICRC....4..159K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{1995ICRC....4..155K,
       author = {{Kovaltsov}, G.~A. and {Kocharov}, L.~G. and {Usoskin}, I.~G. and {Kananen}, H. and {Taskanen}, P.},
        title = "Two Injections of High Energy Neutrons during the May 24, 1990 Solar Flare",
    booktitle = {International Cosmic Ray Conference},
         year = 1995,
       series = {International Cosmic Ray Conference},
       volume = {4},
        pages = {155},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1995ICRC....4..155K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{1995ICRC....4..151U,
       author = {{Usoskin}, I.~G. and {Kovaltsov}, G.~A. and {Kocharov}, L.~G. and {Kananen}, H. and {Tanskanen}, P.},
        title = "High Energy Neutrons from the June 15, 1991 Solar Flare as Detected by the Neutron Monitor",
    booktitle = {International Cosmic Ray Conference},
         year = 1995,
       series = {International Cosmic Ray Conference},
       volume = {4},
        pages = {151},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1995ICRC....4..151U},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{1995ICRC....4..147K,
       author = {{Kananen}, H. and {Kocharov}, L.~G. and {Kovaltsov}, G.~A. and {Tanskanen}, P. and {Usoskin}, I.~G.},
        title = "The June 3, 1982 Solar Flare as a Test for Neutron Monitor Sensitivity for Solar Neutrons",
    booktitle = {International Cosmic Ray Conference},
         year = 1995,
       series = {International Cosmic Ray Conference},
       volume = {4},
        pages = {147},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1995ICRC....4..147K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{1994AIPC..294...45K,
       author = {{Kocharov}, G.~E. and {Chuikin}, E.~I. and {Kovaltsov}, G.~A. and {Usoskin}, I.~G. and {Kocharov}, L.~G.},
        title = "High-energy gamma-ray signature of proton acceleration during 1991 June 15 solar flare",
    booktitle = {High-Energy Solar Phenomena - a New Era of Spacecraft Measurements},
         year = 1994,
       editor = {{Ryan}, J. and {Vestrand}, W.~T.},
       series = {Am.\ Inst.\ Phys.\ Conf.},
       volume = {294},
        pages = {45-50},
          doi = {10.1063/1.45198},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1994AIPC..294...45K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{1994SoPh..155..149K,
       author = {{Kocharov}, L.~G. and {Lee}, Jeongwoo W. and {Zirin}, H. and {Kovaltsov}, G.~A. and {Usoskin}, I.~G. and {Pyle}, K.~R. and {Shea}, M.~A. and {Smart}, D.~F.},
        title = "Neutron and electromagnetic emissions during the 1990 May 24 solar flare",
      journal = {\solphys},
         year = 1994,
       volume = {155},
       number = {1},
        pages = {149-170},
          doi = {10.1007/BF00670736},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1994SoPh..155..149K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{1994AstL...20..658K,
       author = {{Koval'Tsov}, G.~A. and {Kocharov}, G.~E. and {Kocharov}, L.~G. and {Usoskin}, I.~G.},
        title = "Generation of neutrons during the solar flare of May 24, 1990",
      journal = {Astronomy Letters},
         year = 1994,
       volume = {20},
       number = {5},
        pages = {658-664},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1994AstL...20..658K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{1994SoPh..150..267K,
       author = {{Kocharov}, L.~G. and {Kovaltsov}, G.~A. and {Kocharov}, G.~E. and {Chuikin}, E.~I. and {Usoskin}, I.~G. and {Shea}, M.~A. and {Smart}, D.~F. and {Melnikov}, V.~F. and {Podstrigach}, T.~S. and {Armstrong}, T.~P. and {Zirin}, H.},
        title = "Electromagnetic and corpuscular emission from the solar flare of 1991 June 15: Continuous acceleraton of relativistic particles",
      journal = {\solphys},
         year = 1994,
       volume = {150},
       number = {1-2},
        pages = {267-283},
          doi = {10.1007/BF00712889},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1994SoPh..150..267K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{1993RoIzF..57..142E,
       author = {{Efimov}, Yu. E. and {Koval'Tsov}, G.~A. and {Kocharov}, G.~E. and {Kocharov}, L.~G. and {Usoskin}, I.~G.},
        title = "Detection of solar neutrinos by the worldwide network of neutron monitors",
      journal = {Rossijskaya Akademiya Nauk Izvestiya Seriya Fizicheskaya},
         year = 1993,
       volume = {57},
       number = {7},
        pages = {142-145},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1993RoIzF..57..142E},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{1993RoIzF..57..138K,
       author = {{Koval'Tsov}, G.~A. and {Kocharov}, G.~E. and {Kocharov}, L.~G. and {Mel'Nikov}, V.~F. and {Podstrigach}, T.~S. and {Usoskin}, I.~G. and {Chujkin}, E.~I.},
        title = "Gamma-radiation from the solar flare of 15 June 1991 as evidence of long-term acceleration of protons up to 10 GeV",
      journal = {Rossijskaya Akademiya Nauk Izvestiya Seriya Fizicheskaya},
         year = 1993,
       volume = {57},
       number = {7},
        pages = {138-141},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1993RoIzF..57..138K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{1993ICRC....3..123K,
       author = {{Kocharov}, G.~E. and {Chuikin}, E.~I. and {Kocharov}, L.~G. and {Kovaltsov}, G.~A. and {Melnikov}, V.~F. and {Podstrigach}, T.~S. and {Usoskin}, I.~G.},
        title = "High Energy Gamma Rays from 1991 June 15 Solar Flare as Evidence of Proton Acceleration up to 10 GeV",
    booktitle = {23rd International Cosmic Ray Conference (ICRC23), Volume 3},
         year = 1993,
       series = {International Cosmic Ray Conference},
       volume = {3},
        pages = {123},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1993ICRC....3..123K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{1991NCimC..14..417K,
       author = {{Kocharov}, G.~E. and {Koval'Tsov}, G.~A. and {Usoskin}, I.~G.},
        title = "Solar flare neutrinos.",
      journal = {Nuovo Cimento C Geophysics Space Physics C},
         year = 1991,
       volume = {14},
        pages = {417-422},
          doi = {10.1007/BF02509184},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1991NCimC..14..417K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@INPROCEEDINGS{1991ICRC....3..752K,
       author = {{Kocharov}, G.~E. and {Kovaltsov}, G.~A. and {Usoskin}, I.~G.},
        title = "Solar Flare Neutrinos",
    booktitle = {International Cosmic Ray Conference},
         year = 1991,
       series = {International Cosmic Ray Conference},
       volume = {3},
        pages = {752},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1991ICRC....3..752K},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{1990SoPh..127..405O,
       author = {{Ostriakov}, V.~M. and {Usoskin}, I.~G.},
        title = "On the Dimension of Solar Attractor",
      journal = {\solphys},
         year = 1990,
       volume = {127},
       number = {2},
        pages = {405-412},
          doi = {10.1007/BF00152177},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1990SoPh..127..405O},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{1988BSolD1988...91O,
       author = {{Ostryakov}, V.~M. and {Usoskin}, I.~G.},
        title = "On the dimension of the solar attractor.",
      journal = {Byulletin Solnechnye Dannye Akademie Nauk SSSR},
         year = 1988,
       volume = {1988},
        pages = {91-95},
       adsurl = {https://ui.adsabs.harvard.edu/abs/1988BSolD1988...91O},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}


