University of Oulu

Ilya Usoskin

The group
List of publications
Position Professor, Head of Oulu Cosmic Ray station
Vice-Director of ReSoLVE Center of Excellence
Address: Sodankyla Geophysical Observatory (Oulu unit) and Dept. of Physics
P.O.Box 3000, FIN-90014 University of Oulu
Telephone: +358-50-3441247
Room: FY256-A
Official website: Ilya Usoskin

New opportunity: Visitors grants are available in the framework of ESPERA project

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Recent publications:
NEW -> Usoskin, I., Miyake, F., Baroni, M. et al., Extreme Solar Events: Setting up a Paradigm. Space Sci. Rev. 219, 73 (2023) doi: 10.1007/s11214-023-01018-1

  • Kocharov, L., A. Mishev, E. Riihonen, R. Vainio, I. Usoskin (2023) A Comparative Study of Ground-level Enhancement Events of Solar Energetic Particles, Astrophys. J., 958, 122, doi: 10.3847/1538-4357/acfee8.
  • Norton, A., R. Howe, L. Upton, I. Usoskin (2023) Solar Cycle Observations. Space Sci Rev 219, 64.
  • Aguilar, M. et al. (2023) Temporal Structures in Positron Spectra and Charge-Sign Effects in Galactic Cosmic Rays, Phys. Rev. Lett., 131, 151002. doi:10.1103/PhysRevLett.131.151002.
  • Borthakur, M., M. Sinnhuber, A. Laeng, T. Reddmann, P. Braesicke, G. Stiller, T. von Clarmann, B. Funke, I. Usoskin, J.M. Wissing, O. Yakovchuk (2023) Impact of chlorine ion chemistry on ozone loss in the middle atmosphere during very large solar proton events, Atmos. Chem. Phys., 23, 12985-13013, doi: 10.5194/acp-23-12985-2023.
  • Mishev, A., S. Panovska, I. Usoskin (2023) Assessment of the radiation risk at flight altitudes for an extreme solar particle storm of 774 AD, J. Space Weather Space Clim., 13, 22, doi: 10.1051/swsc/2023020
  • Dash, S., D. Nandy, I. Usoskin (2023) Long-term forcing of the Sun's coronal field, open flux, and cosmic ray modulation potential during grand minima, maxima, and regular activity phases by the solar dynamo mechanism, Mon. Not. Royal Astron. Soc., 525, 4801-4814, doi: 10.1093/mnras/stad1807
  • Panovska, S., S. Poluianov, J. Gao, M. Korte, A. Mishev, Y. Shprits, I. Usoskin. Effects of Global Geomagnetic Field Variations Over the Past 100,000 Years on Cosmogenic Radionuclide Production Rates in the Earth's Atmosphere. J. Geophys. Res.: Space Phys., 128(8), e2022JA031158 (2023) doi: 10.1029/2022JA031158
  • Nandy, D., et al. Exploring the Solar Poles: The Last Great Frontier of the Sun. Bulletin of the AAS, 55(3) (2023) Doi: 10.3847/25c2cfeb.1160b0ef
  • Usoskin, I.G., A history of solar activity over millennia, Liv. Rev Solar Phys., 20, 2 (2023) doi: 10.1007/s41116-023-00036-z
  • Reddmann, Th., M. Sinnhuber, J. Wissing, O. Yakovchuk, and I. Usoskin, The impact of an extreme solar event on the middle atmosphere: a case study, Atmos. Chem. Phys., 23, 6989-7000 (2023), doi: 10.5194/acp-23-6989-2023
  • Aguilar, M. et al. (AMS collaboration), Properties of Cosmic-Ray Sulfur and Determination of the Composition of Primary Cosmic-Ray Carbon, Neon, Magnesium, and Sulfur: Ten-Year Results from the Alpha Magnetic Spectrometer, Phys. Rev. Lett., 130, 211002 (2023) doi: 10.1103/PhysRevLett.130.211002
  • Vaisanen, P., I. Usoskin, R. Kahkonen, S. Koldobskiy, K. Mursula, Revised Reconstruction of the Heliospheric Modulation Potential for 1964-2022, J. Geophys. Res. (Space Phys.) 128, e2023JA031352 (2023) doi: 10.1029/2023JA031352.
  • Aguilar, M. et al. (AMS collaboration), Temporal Structures in Electron Spectra and Charge Sign Effects in Galactic Cosmic Rays, Phys. Rev. Lett., 130, 161001 (2023) doi:10.1103/PhysRevLett.130.161001.
  • Clette, F., L. Lefevre, T. Chatzistergos, ... I.G. Usoskin, L. van Driel-Gesztelyi, J.M. Vaquero, Recalibration of the Sunspot-Number: Status Report, Solar Phys. 298, 44, (2023) doi: 10.1007/s11207-023-02136-3.
  • Biswas, A., B.B. Karak, I. Usoskin, E. Weisshaar, Long-Term Modulation of Solar Cycles, Space Sci. Rev., 219, 19 (2023) doi: 10.1007/s11214-023-00968-w.
  • Koldobskiy, S., F. Mekhaldi, G. Kovaltsov, I. Usoskin, Multiproxy Reconstructions of Integral Energy Spectra for Extreme Solar Particle Events of 7176 BCE, 660 BCE, 775 CE, and 994 CE, J. Geophys. Res. (Space Phys.), 128, e2022JA031186 (2023) doi: 10.1029/2022JA031186
  • Usoskin, I.G., S.A. Koldobskiy, S.V. Poluianov, O. Raukunen, R. Vainio, G.A. Kovaltsov, Consistency of the average flux of solar energetic particles over timescales of years to megayears, Astron. Astrophys. Lett., 670, L22 (2023), doi: 10.1051/0004-6361/202245810.
  • Larsen, N., A. Mishev, I. Usoskin, A New Open-Source Geomagnetosphere Propagation Tool (OTSO) and Its Applications, J. Geophys. Res. (Space Phys.), 128, e2022JA031061 (2023) doi: 10.1029/2022JA031061

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