First-authored, refereed papers of Ilya Usoskin

A list of first-authored, refereed publications of Ilya Usoskin, derived from the SAO/NASA Astrophysics Data System (ADS). The number in brackets after each title indicates the number of citations that the paper has received.

Orcid ID: 0000-0001-8227-9081

List of publications ordered by citations
Number of papers: 71
No. of citations: 5081

2025

  1. Sunspot cycles for the first millennium BC reconstructed from radiocarbon [6]
    Usoskin, I., Chatzistergos, T., Solanki, S. K., Krivova, N., Kovaltsov, G., Brehm, N., Christl, M. & Wacker, L., A&A, 698, A182

2024

  1. Updated model of cosmic-ray-induced ionization in the atmosphere (CRAC:CRII_v3): Improved yield function and lookup tables [4]
    Usoskin, I. G., Kovaltsov, G. A. & Mishev, A. L., Journal of Space Weather and Space Climate, 14, 20

2023

  1. A history of solar activity over millennia [109]
    Usoskin, Ilya G., Living Reviews in Solar Physics, 20, 2

2021

  1. Robustness of Solar-Cycle Empirical Rules Across Different Series Including an Updated Active-Day Fraction (ADF) Sunspot Group Series [27]
    Usoskin, Ilya, Kovaltsov, Gennady & Kiviaho, Wilma, Solar Physics, 296, 13
  2. Mind the Gap: New Precise 14C Data Indicate the Nature of Extreme Solar Particle Events [24]
    Usoskin, Ilya G. & Kovaltsov, Gennady A., Geophysical Research Letters, 48, e94848

2020

  1. Revisited Reference Solar Proton Event of 23 February 1956: Assessment of the Cosmogenic-Isotope Method Sensitivity to Extreme Solar Events [44]
    Usoskin, Ilya G., Koldobskiy, Sergey A., Kovaltsov, Gennady A., Rozanov, Eugene V., Sukhodolov, Timofei V., Mishev, Alexander L. & Mironova, Irina A., Journal of Geophysical Research (Space Physics), 125, e27921

2018

  1. Comment on the paper by Popova et al. "On a role of quadruple component of magnetic field in defining solar activity in grand cycles" [8]
    Usoskin, Ilya G., Journal of Atmospheric and Solar-Terrestrial Physics, 176, 69

2017

  1. An Optical Atmospheric Phenomenon Observed in 1670 over the City of Astrakhan Was Not a Mid-Latitude Aurora [20]
    Usoskin, I. G., Kovaltsov, G. A., Mishina, L. N., Sokoloff, D. D. & Vaquero, J., Solar Physics, 292, 15
  2. A history of solar activity over millennia [329]
    Usoskin, Ilya G., Living Reviews in Solar Physics, 14, 3
  3. Heliospheric modulation of cosmic rays during the neutron monitor era: Calibration using PAMELA data for 2006-2010 [136]
    Usoskin, Ilya G., Gil, Agnieszka, Kovaltsov, Gennady A., Mishev, Alexander L. & Mikhailov, Vladimir V., Journal of Geophysical Research (Space Physics), 122, 3875

2016

  1. Dependence of the Sunspot-Group Size on the Level of Solar Activity and its Influence on the Calibration of Solar Observers [23]
    Usoskin, I. G., Kovaltsov, G. A. & Chatzistergos, T., Solar Physics, 291, 3793
  2. A New Calibrated Sunspot Group Series Since 1749: Statistics of Active Day Fractions [110]
    Usoskin, I. G., Kovaltsov, G. A., Lockwood, M., Mursula, K., Owens, M. & Solanki, S. K., Solar Physics, 291, 2685
  3. Solar activity during the Holocene: the Hallstatt cycle and its consequence for grand minima and maxima [125]
    Usoskin, I. G., Gallet, Y., Lopes, F., Kovaltsov, G. A. & Hulot, G., A&A, 587, A150

2015

  1. Force-field parameterization of the galactic cosmic ray spectrum: Validation for Forbush decreases [22]
    Usoskin, I. G., Kovaltsov, G. A., Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., Bongi, M., Bonvicini, V., Bottai, S., Bruno, A., Cafagna, F., Campana, D., Carbone, R., Carlson, P., Casolino, M., Castellini, G., De Donato, C., De Santis, C., De Simone, N., Di Felice, V., Formato, V., Galper, A. M., Karelin, A. V., Koldashov, S. V., Koldobskiy, S., Krutkov, S. Y., Kvashnin, A. N., Leonov, A., Malakhov, V., Marcelli, L., Martucci, M., Mayorov, A. G., Menn, W., Mergé, M., Mikhailov, V. V., Mocchiutti, E., Monaco, A., Mori, N., Munini, R., Osteria, G., Palma, F., Panico, B., Papini, P., Pearce, M., Picozza, P., Pizzolotto, C., Ricci, M., Ricciarini, S. B., Rossetto, L., Sarkar, R., Scotti, V., Simon, M., Sparvoli, R., Spillantini, P., Stozhkov, Y. I., Vacchi, A., Vannuccini, E., Vasilyev, G. I., Voronov, S. A., Yurkin, Y. T., Zampa, G., Zampa, N. & Zverev, V. G., Advances in Space Research, 55, 2940
  2. Nature's Third Cycle: A Story of Sunspots [0]
    Usoskin, Ilya, American Journal of Physics, 83, 984
  3. The carbon-14 spike in the 8th century was not caused by a cometary impact on Earth [16]
    Usoskin, Ilya G. & Kovaltsov, Gennady A., Icarus, 260, 475
  4. The Maunder minimum (1645-1715) was indeed a grand minimum: A reassessment of multiple datasets [192]
    Usoskin, Ilya G., Arlt, Rainer, Asvestari, Eleanna, Hawkins, Ed, Käpylä, Maarit, Kovaltsov, Gennady A., Krivova, Natalie, Lockwood, Michael, Mursula, Kalevi, O'Reilly, Jezebel, Owens, Matthew, Scott, Chris J., Sokoloff, Dmitry D., Solanki, Sami K., Soon, Willie & Vaquero, José M., A&A, 581, A95

2014

  1. Evidence for distinct modes of solar activity [103]
    Usoskin, I. G., Hulot, G., Gallet, Y., Roth, R., Licht, A., Joos, F., Kovaltsov, G. A., Thébault, E. & Khokhlov, A., A&A, 562, L10

2013

  1. The AD775 cosmic event revisited: the Sun is to blame [201]
    Usoskin, I. G., Kromer, B., Ludlow, F., Beer, J., Friedrich, M., Kovaltsov, G. A., Solanki, S. K. & Wacker, L., A&A, 552, L3
  2. A History of Solar Activity over Millennia [160]
    Usoskin, Ilya G., Living Reviews in Solar Physics, 10, 1

2012

  1. Occurrence of Extreme Solar Particle Events: Assessment from Historical Proxy Data [104]
    Usoskin, Ilya G. & Kovaltsov, Gennady A., ApJ, 757, 92

2011

  1. Ionization effect of solar particle GLE events in low and middle atmosphere [77]
    Usoskin, I. G., Kovaltsov, G. A., Mironova, I. A., Tylka, A. J. & Dietrich, W. F., Atmospheric Chemistry & Physics, 11, 1979
  2. Solar modulation parameter for cosmic rays since 1936 reconstructed from ground-based neutron monitors and ionization chambers [210]
    Usoskin, Ilya G., Bazilevskaya, Galina A. & Kovaltsov, Gennady A., Journal of Geophysical Research (Space Physics), 116, A02104

2010

  1. 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 14C Carbon Isotope'' [1]
    Usoskin, I. G. & Kovaltsov, G. A., Solar Physics, 261, 353
  2. Regional millennial trend in the cosmic ray induced ionization of the troposphere [26]
    Usoskin, I. G., Mironova, I. A., Korte, M. & Kovaltsov, G. A., Journal of Atmospheric and Solar-Terrestrial Physics, 72, 19
  3. Cosmic ray induced ionization model CRAC:CRII: An extension to the upper atmosphere [64]
    Usoskin, Ilya G., Kovaltsov, Gennady A. & Mironova, Irina A., Journal of Geophysical Research (Atmospheres), 115, D10302

2009

  1. Grand Minima of Solar Activity and the Mean-Field Dynamo [61]
    Usoskin, I. G., Sokoloff, D. & Moss, D., Solar Physics, 254, 345
  2. History of cosmic ray research in Finland [1]
    Usoskin, I. G., Valtonen, E., Vainio, R., Tanskanen, P. J. & Aurela, A. M., Advances in Space Research, 44, 1232
  3. Short-term production and synoptic influences on atmospheric 7Be concentrations [34]
    Usoskin, Ilya G., Field, Christy V., Schmidt, Gavin A., LeppäNen, Ari-Pekka, Aldahan, Ala, Kovaltsov, Gennady A., Possnert, GöRan & Ungar, R. Kurt, Journal of Geophysical Research (Atmospheres), 114, D06108
  4. On the common solar signal in different cosmogenic isotope data sets [41]
    Usoskin, Ilya G., Horiuchi, Kazuho, Solanki, Sami, Kovaltsov, Gennady A. & Bard, Edouard, Journal of Geophysical Research (Space Physics), 114, A03112
  5. A Solar Cycle Lost in 1793-1800: Early Sunspot Observations Resolve the Old Mystery [86]
    Usoskin, Ilya G., Mursula, Kalevi, Arlt, Rainer & Kovaltsov, Gennady A., ApJ, 700, L154
  6. Ionization of the earth's atmosphere by solar and galactic cosmic rays [84]
    Usoskin, Ilya G., Desorgher, Laurent, Velinov, Peter, Storini, Marisa, Flückiger, Erwin O., Bütikofer, Rolf & Kovaltsov, Gennady A., Acta Geophysica, 57, 88

2008

  1. Forbush decreases of cosmic rays: Energy dependence of the recovery phase [43]
    Usoskin, I. G., Braun, I., Gladysheva, O. G., HöRandel, J. R., JäMséN, T., Kovaltsov, G. A. & Starodubtsev, S. A., Journal of Geophysical Research (Space Physics), 113, A07102
  2. Role of centennial geomagnetic changes in local atmospheric ionization [42]
    Usoskin, I. G., Korte, M. & Kovaltsov, G. A., Geophysical Research Letters, 35, L05811
  3. A History of Solar Activity over Millennia [83]
    Usoskin, Ilya G., Living Reviews in Solar Physics, 5, 3
  4. Production of cosmogenic 7Be isotope in the atmosphere: Full 3-D modeling [60]
    Usoskin, Ilya G. & Kovaltsov, Gennady A., Journal of Geophysical Research (Atmospheres), 113, D12107
  5. Cosmic rays and climate of the Earth: Possible connection [45]
    Usoskin, Ilya G. & Kovaltsov, Gennady A., Comptes Rendus Geoscience, 340, 441

2007

  1. Long-term persistence of solar active longitudes and its implications for the solar dynamo theory [42]
    Usoskin, I. G., Berdyugina, S. V., Moss, D. & Sokoloff, D. D., Advances in Space Research, 40, 951
  2. Grand minima and maxima of solar activity: new observational constraints [328]
    Usoskin, I. G., Solanki, S. K. & Kovaltsov, G. A., A&A, 471, 301
  3. (1) Preferred longitudes in sunspot activity (2) Preferred sunspot longitudes: non-axisymmetry and differential rotation [7]
    Usoskin, I. G., Berdyugina, S. V. & Poutanen, J., A&A, 464, 761

2006

  1. Correlation between clouds at different altitudes and solar activity: Fact or Artifact? [43]
    Usoskin, I. G., Voiculescu, M., Kovaltsov, G. A. & Mursula, K., Journal of Atmospheric and Solar-Terrestrial Physics, 68, 2164
  2. Solar activity reconstructed over the last 7000 years: The influence of geomagnetic field changes [55]
    Usoskin, I. G., Solanki, S. K. & Korte, M., Geophysical Research Letters, 33, L08103
  3. Long-term solar activity reconstructions: direct test by cosmogenic 44Ti in meteorites [31]
    Usoskin, I. G., Solanki, S. K., Taricco, C., Bhandari, N. & Kovaltsov, G. A., A&A, 457, L25
  4. Link Between Cosmic Rays and Clouds on Different Time Scales [0]
    Usoskin, Ilya G. & Kovaltsov, Gennady A., Advances in Geosciences, Volume 2: Solar Terrestrial (ST) (Editors: Duldig, Marc), 2, p. 321
  5. Cosmic ray induced ionization in the atmosphere: Full modeling and practical applications [140]
    Usoskin, Ilya G. & Kovaltsov, Gennady A., Journal of Geophysical Research (Atmospheres), 111, D21206
  6. Solar proton events in cosmogenic isotope data [72]
    Usoskin, Ilya G., Solanki, Sami K., Kovaltsov, Gennady A., Beer, Jürg & Kromer, Bernd, Geophysical Research Letters, 33, L08107

2005

  1. Solar activity, cosmic rays, and Earth's temperature: A millennium-scale comparison [44]
    Usoskin, I. G., Schüssler, M., Solanki, S. K. & Mursula, K., Journal of Geophysical Research (Space Physics), 110, A10102
  2. Preferred sunspot longitudes: non-axisymmetry and differential rotation [66]
    Usoskin, I. G., Berdyugina, S. V. & Poutanen, J., A&A, 441, 347
  3. Heliospheric modulation of cosmic rays: Monthly reconstruction for 1951-2004 [322]
    Usoskin, Ilya G., Alanko-Huotari, Katja, Kovaltsov, Gennady A. & Mursula, Kalevi, Journal of Geophysical Research (Space Physics), 110, A12108

2004

  1. Long-Term Solar Activity: Direct and Indirect Study [37]
    Usoskin, I. G. & Kovaltsov, G. A., Solar Physics, 224, 37
  2. Cosmic ray-induced ionization in the atmosphere: spatial and temporal changes [71]
    Usoskin, I. G., Gladysheva, O. G. & Kovaltsov, G. A., Journal of Atmospheric and Solar-Terrestrial Physics, 66, 1791
  3. Latitudinal dependence of low cloud amount on cosmic ray induced ionization [57]
    Usoskin, I. G., Marsh, N., Kovaltsov, G. A., Mursula, K. & Gladysheva, O. G., Geophysical Research Letters, 31, L16109
  4. Reconstruction of solar activity for the last millennium using 10Be data [92]
    Usoskin, I. G., Mursula, K., Solanki, S., Schüssler, M. & Alanko, K., A&A, 413, 745
  5. Usoskin et al. Reply: [5]
    Usoskin, Ilya G., Solanki, Sami K., Schüssler, Manfred & Mursula, Kalevi, Physical Review Letters, 92, 199002

2003

  1. Long-Term Solar Cycle Evolution: Review of Recent Developments [148]
    Usoskin, I. G. & Mursula, K., Solar Physics, 218, 319
  2. Reconstruction of Monthly and Yearly Group Sunspot Numbers From Sparse Daily Observations [38]
    Usoskin, I. G., Mursula, K. & Kovaltsov, G. A., Solar Physics, 218, 295
  3. The lost sunspot cycle: Reanalysis of sunspot statistics [34]
    Usoskin, I. G., Mursula, K. & Kovaltsov, G. A., A&A, 403, 743
  4. Millennium-Scale Sunspot Number Reconstruction: Evidence for an Unusually Active Sun since the 1940s [160]
    Usoskin, Ilya G., Solanki, Sami K., Schüssler, Manfred, Mursula, Kalevi & Alanko, Katja, Physical Review Letters, 91, 211101

2002

  1. Heliospheric modulation strength during the neutron monitor era [43]
    Usoskin, I. G., Alanko, K., Mursula, K. & Kovaltsov, G. A., Solar Physics, 207, 389
  2. Lost sunspot cycle in the beginning of Dalton minimum: New evidence and consequences [33]
    Usoskin, I. G., Mursula, K. & Kovaltsov, G. A., Geophysical Research Letters, 29, 2183
  3. A physical reconstruction of cosmic ray intensity since 1610 [111]
    Usoskin, Ilya G., Mursula, Kalevi, Solanki, Sami K., Schüssler, Manfred & Kovaltsov, Gennady A., Journal of Geophysical Research (Space Physics), 107, 1374

2001

  1. Simulation of Sunspot Activity During Active Sun and Great Minima Using Regular, Random and Relic Fields [9]
    Usoskin, I. G., Mursula, K. & Kovaltsov, G. A., Solar Physics, 199, 187
  2. Dependence of cosmic rays on solar activity for odd and even solar cycles [35]
    Usoskin, I. G., Mursula, K., Kananen, H. & Kovaltsov, G. A., Advances in Space Research, 27, 571
  3. Sensitivity of a neutron monitor to galactic cosmic rays [3]
    Usoskin, I. G., Bobik, P., Gladysheva, O. G., Kananen, H., Kovaltsov, G. A. & Kudela, K., Advances in Space Research, 27, 565
  4. Was one sunspot cycle lost in late XVIII century? [68]
    Usoskin, I. G., Mursula, K. & Kovaltsov, G. A., A&A, 370, L31
  5. Heliospheric modulation of cosmic rays and solar activity during the Maunder minimum [74]
    Usoskin, Ilya G., Mursula, Kalevi & Kovaltsov, Gennady A., Journal of Geophysical Research, 106, 16039

2000

  1. Cyclic behaviour of sunspot activity during the Maunder minimum [62]
    Usoskin, I. G., Mursula, K. & Kovaltsov, G. A., A&A, 354, L33

1999

  1. Connections between neutron monitor count rate and solar modulation strength [5]
    Usoskin, I. G., Gladysheva, O. G., Bobik, P., Kudela, K. & Kananen, H., Czechoslovak Journal of Physics, 49, 1743

1998

  1. Correlative study of solar activity and cosmic ray intensity [95]
    Usoskin, I. G., Kananen, H., Mursula, K., Tanskanen, P. & Kovaltsov, G. A., Journal of Geophysical Research, 103, 9567

1997

  1. Phase Evolution of Solar Activity and Cosmic-Ray Variation Cycles [9]
    Usoskin, I. G., Kovaltsov, G. A., Kananen, H., Mursula, K. & Tanskanen, P. J., Solar Physics, 170, 447
  2. The World Neutron Monitor Network as a tool for the study of solar neutrons [21]
    Usoskin, I. G., Kovaltsov, G. A., Kananen, H. & Tanskanen, P., Annales Geophysicae, 15, 375

Created on Wed Apr 22 04:32:22 2026.