University of Oulu

Ilya Usoskin

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: PSOAS-314

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Recent publications:
NEW -> Asvestari, E., A. Gil, G.A. Kovaltsov, I.G. Usoskin, Neutron Monitors and Cosmogenic Isotopes as Cosmic Ray Energy-Integration Detectors: Effective Yield Functions, Effective Energy, and Its Dependence on the Local Interstellar Spectrum, J. Geophys. Res. Space Phys., 120, 9790-9802, 2017, doi: 10.1002/2017JA024469

  • Owens M.J., M. Lockwood, E. Hawkins, I. Usoskin, G.S. Jones, L. Barnard, A. Schurer, J. Fasullo, The Maunder minimum and the Little Ice Age: an update from recent reconstructions and climate simulations, J. Space Weather Space Clim. 7, A33, 2017, doi: 10.1051/swsc/2017034
  • Jungclaus, J.H., E. Bard, M. Baroni, et al., The PMIP4 contribution to CMIP6 - Part 3: The last millennium, scientific objective, and experimental design for the PMIP4 past1000 simulations, Geosci. Model Dev., 10, 4005-4033, 2017. doi: 10.5194/gmd-10-4005-2017
  • Poluianov, S.V., I.G. Usoskin, A.L. Mishev, M.A. Shea, D.F. Smart, GLE and Sub-GLE Redefinition in the Light of High-Altitude Polar Neutron Monitors, Solar Phys., 292, 176, 2017, doi: 10.1007/s11207-017-1202-4
  • Mishev, A., S. Poluianov, I. Usoskin, Assessment of spectral and angular characteristics of sub-GLE events using the global neutron monitor network, Space Weather Space Clim., 7, A28, 2017, doi: 10.1051/swsc/2017026
  • Asvestari. E., T. Willamo, A. Gil, I.G. Usoskin, G.A. Kovaltsov, V.V. Mikhailov, A. Mayorov, Analysis of Ground Level Enhancements (GLE): Extreme solar energetic particle events have hard spectra, Adv. Space Res., 60, 781-787, 2017. doi: 10.1016/j.asr.2016.08.043.
  • Chatzistergos, T., I.G. Usoskin, G.A. Kovaltsov, N.A. Krivova and S.K. Solanki, New reconstruction of the sunspot group numbers since 1739 using direct calibration and "backbone" methods, Astron. Astrophys., 602, A69, 2017, doi: 10.1051/0004-6361/201630045
  • Matthes, K., B. Funke, M.E. Andersson, et al., Solar forcing for CMIP6 (v3.2), Geosci. Model Dev., 10, 2247-2302, 2017, doi: 10.5194/gmd-10-2247-2017.
  • Usoskin, I.G., A. Gil, G.A. Kovaltsov, A. Mishev, V.V. Mikhailov, Heliospheric modulation of cosmic rays during the neutron monitor era: Calibration using PAMELA data for 2006-2010, J. Geophys. Res. Space Phys., 122, 3875-3887, 2017, doi: 10.1002/2016JA023819
  • Willamo, T., I.G. Usoskin, G. A. Kovaltsov, Updated sunspot group number reconstruction for 1749-1996 using the active day fraction method, Astron, Astrophys., 601, A109, 2017, doi: 10.1051/0004-6361/201629839
  • Sukhodolov, T. I.G. Usoskin, E. Rozanov, E. Asvestari, W.T. Ball, M.A.J. Curran, H. Fischer, G. Kovaltsov, F. Miyake, T. Peter, C. Plummer, W. Schmutz, M. Severi, R. Traversi, Atmospheric impacts of the strongest known solar particle storm of 775 AD, Sci. Rep., 7, 45257, 2017. doi: 10.1038/srep45257.
  • Kocharov, L., S. Pohjolainen, A. Mishev, M.J. Reiner, J. Lee, T. Laitinen, L.V. Didkovsky, V.J. Pizzo, R. Kim, A. Klassen, M. Karlicky, K. Cho, D.E. Gary, I. Usoskin, E. Valtonen and R. Vainio, Investigating the Origins of Two Extreme Solar Particle Events: Proton Source Profile and Associated Electromagnetic Emissions, Astrophys. J., 839, 79, 2016, doi: 10.3847/1538-4357/aa6a13.
  • Lockwood, M., M. Owens, E. Hawkins, G.S. Jones and I.G. Usoskin, Frost fairs, sunspots and the Little Ice Age, Astron. Geophys., 58, 2.17-2.23, 2017, doi: 10.1093/astrogeo/atx057
  • Usoskin, I.G. A history of solar activity over millennia, Living Rev. Sol. Phys. 14, 3, 2017 doi:10.1007/s41116-017-0006-9
  • Leussu, R., I.G. Usoskin, V. Senthamizh Pavai, A. Diercke, R. Arlt, C. Denker, K. Mursula, Wings of the butterfly: Sunspot groups for 1826--2015, Astron. Astrophys., 599, A131, 2017, doi: 10.1051/0004-6361/201629533.
  • Asvestari, E., I.G. Usoskin, G.A. Kovaltsov, M.J. Owens, N.A. Krivova, S. Rubinetti, C. Taricco, Assessment of different sunspot number series using the cosmogenic isotope 44Ti in meteorites, Mon. Not. Royal. Astron. Soc., 467, 1608-1613, 2017, doi: 10.1093/mnras/stx190.
  • Usoskin, I.G., G.A. Kovaltsov, L.N. Mishina, D.D. Sokoloff, J. Vaquero, An Optical Atmospheric Phenomenon Observed in 1670 over the City of Astrakhan Was Not a Mid-Latitude Aurora, Solar Phys., 292, 15, 2017 (doi: 10.1007/s11207-016-1035-6).

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