Publications

Space Climate Research Unit publications from recent years.

See also a more complete list of publication in SoleCRIS.

ReSoLVE publications.

Refereed publications in 2019

  • Asikainen, T. and M. Ruopsa, New homogeneous composite of energetic electron fluxes from POES satellites: 1. Correction for background noise and orbital drift, J. Geophys. Res. Space Phys.124, 2019.
  • Ayalew Getachew, T., I.I. Virtanen and K. Mursula, Asymmetric distribution of weak photospheric magnetic field values Astrophys. J.,874, 116, 2019.
  • Dorman, L., Y. Tassev, P. I. Y. Velinov, A. Mishev, D. Tomova and L. Mateev, Investigation of exceptional solar activity in September 2017: GLE 72 and unusual Forbush decrease in GCR J. Phys.: Conf. Ser. , 1181, 012070, 2019.
  • Holappa, L., N. Gopalswamy and K. Mursula, Explicit IMF By-effect maximizes at subauroral latitudes (Dedicated to the memory of Eigil Friis-Christensen), J. Geophys. Res., in press, 2019.
  • Jiggens. P., et al., including I.G Usoskin and A.L. Mishev, In Situ Data and Effect Correlation During September 2017 Solar Particle Event Space Weather 17, 2019.
  • Mishev, A. and I. Usoskin, Analysis of sub-GLE and GLE events using NM data: space weather applications, J. Phys.: Conf. Ser. 1181, 012006, 2019.
  • Mishev, A. et al, The upgraded GLE database includes assessment of radiation exposure at flight altitudes, J. Phys.: Conf. Ser. 1181, 012061 2019.
  • Mishev, A. and P. Jiggens, Preface to measurement, specification and forecasting of the Solar Energetic Particle (SEP) environment and Ground Level Enhancements (GLEs) J. Space weather and Space Climate 9, E1, 2019.
  • Salminen, A., T. Asikainen, V. Maliniemi and K. Mursula, Effect of energetic electron precipitation on the northern polar vortex: Explaining the QBO modulation via control of meridional circulation, J. Geophys. Res. Atmos.124, 2019.
  • Virtanen, I.I. and K. Mursula, Photospheric and coronal magnetic fields in six magnetographs. III. Photospheric and coronal magnetic fields in 1974-2017, Astron. Astrophys., in press, 2019.
  • Virtanen, I. I, A.A. Pevtsov and K. Mursula, Structure and evolution of the photospheric magnetic field in 2010 - 2017: Comparison of SOLIS/VSM vector field and BLOS potential field, Astron. Astrophysin press, 2019.
  • Zieger, B., I.I. Virtanen, and K. Mursula , Spatial power spectrum of the photospheric, magnetic field during solar minimum, Astron. Astrophys623, A51, 2019.

Refereed publications in 2018

  • Acero, F.G., M. C. Gallego, J. A. García, I. G. Usoskin, and J. M. Vaquero, Extreme Value Theory Applied to the Millennial Sunspot Number Series, Astrophys. J.853, 80, 2018.
  • Egorova, T., W. Schmutz, E. Rozanov, A.I. Shapiro, I. Usoskin, et al., Revised historical solar irradiance forcing, Astron. Astrophys.615, A85, 2018.
  • Fleishman, G.D., and A. A. Pevtsov, Electric Currents in the Solar Atmosphere, Electric Currents in Geospace and Beyond, Geophysical Monograph 235, First Edition, 2018.
  • Gil, A., and K. Mursula, Comparing two intervals ofexceptionally strong solarrotation recurrence of galacticcosmic rays, J. Geophys. Res. 123, 2018.
  • Gil, A., G. A. Kovaltsov, V.V. Mikhailov, A. Mishev, S. Poluianov, I.G. Usoskin, An Anisotropic Cosmic-Ray Enhancement Event on 07-June-2015: A Possible Origin Sol. Phys. 293, 154, 2018.
  • Hamada, A., T. Asikainen, I.I., Virtanen and K. Mursula, Automated identification of coronal holes from synoptic EUV maps, Solar phys.293, 71, 2018.
  • Holappa, L. and K. Mursula, Explicit IMF By-dependence in high-latitude geomagnetic activity, J. Geophys. Res. in press, 2018.
  • Katsova, M.M., L.L. Kitchatinov, M.A. Livshits, D.L. Moss, D.D Sokoloff, I.G. Usoskin, Can Supeflares Occur on the Sun? A View from Dynamo Theory, Astron. Rep.62, 72–80, 2018.
  • Koldobskiy, S.A., G.A. Kovaltsov, I.G. Usoskin, Effective rigidity of a polar neutron monitor for recording Ground-level enhancements, Solar Phys.293, 110, 2018.
  • Koldobskiy, S.A., G.A. Kovaltsov, I.G. Usoskin, A solar cycle of cosmic ray fluxes for 2006–2014: Comparison between PAMELA and neutron monitors, J. Geophys. Res. Space Phys.123, 4479-4487, 2018.
  • Koskela, J., I. I. Virtanen and K. Mursula, Southward shift of the coronal neutral line and the heliospheric current sheet: Evidence for radial evolution of hemispheric asymmetry, Astron. Astrophys., in press, 2018.
  • Maliniemi, V., T. Asikainen and K. Mursula, Decadal variability in the Northern Hemisphere winter circulation: Effects of different solar and terrestrial drivers, J. Atm. Solar-Terr. Phys.179, 40-54, 2018
  • Mishev, A. L., and I.G. Usoskin, Assessment of the radiation environment at commercial jet-flight altitudes during GLE 72 on 10 September 2017 using neutron monitor data, Space Weather16, 2018.
  • Mishev, A., S. Tuohino and I.G. Usoskin Neutron monitor count rate increase as a proxy for dose rate assessment at aviation altitudes during GLEs, J. Space Weather Space Clim.8, A46, 2018.
  • Mishev, A.L, I.G. Usoskin, O. Raukunen, M. Paassilta, E. Valtonen, L. Kocharov and R. Vainio First Analysis of Ground-Level Enhancement (GLE) 72 on 10 September 2017: Spectral and Anisotropy Characteristics, Solar phys. 293:136, 2018.
  • Mishev, A.L. and P.I.Y. Velinov, Ion production and ionization effect in the atmosphere during the Bastille day GLE 59 due to high energy SEPs Adv. Space Res.61, 316-325, 2018.
  • Mursula, K., and L. Holappa, Principal component analysis of geomagnetic activity: New information on solar wind, Proceedings of IAU Symposium no. 335 on Space Weather of the Heliosphere: Processes and Forecasts, ed. C. Foullon and O. Malandraki,International Astronomical Union, 2018.
  • Peitso, P., E. I. Tanskanen, T. Pulkkinen, and K. Mursula, High-frequency geomagnetic fluctuations at auroral oval and polar cap, Space Weather16, 2018.
  • Poluianov, S., G. A. Kovaltsov and I. G. Usoskin, Solar energetic particles and galactic cosmic rays over millions of years as inferred from data on cosmogenic 26Al in lunar samples, 618, A96, 2018.
  • Singh, N.K. M. J. Käpylä, A. Brandenburg, P. J. Käpylä, A. Lagg and I.I. Virtanen, Bihelical spectrum of solar magnetic helicity and its evolution, Astrophys. J.863:182, 2018.
  • Takalo, J., and K. Mursula, Principal component analysis of sunspot cycle shape, Astron. Astrophys.620, A100, 2018.
  • Tlatova, K., A. Tlatov, A.A. Pevtsov, K. Mursula, V. Vasil'eva; E. Heikkinen, L. Bertello. A. Pevtsov, I.I. Virtanen and N. Karachick, Tilt of sunspot bipoles in solar cycles 15 to 23, Solar phys.293, 118, 2018.
  • Tuohino, S., A. Ibragimov, I. Usoskin, A. Mishev, Upgrade of GLE database: Assessment of effective dose rate at flight altitude, Adv. Space Res.62, 398-407, 2018.
  • Usoskin, I.G., Comment on the paper by Popova et al. “On a role of quadruple component of magnetic field in defining solar activity in grand cycles”, J. Atmos. Solar-Terr. Phys.176, 69-71, 2018.
  • Uusitalo, J. L. Arppe, T. Hackman, S. Helama, G. Kovaltsov, K. Mielikäinen, H. Mäkinen, P. Nöjd, V. Palonen, I. Usoskin, M. Oinonen, Solar superstorm of AD 774 recorded subannually by Arctic tree rings, Nature Comm.9, 3495, 2018
  • Virtanen I.O.I., I.I. Virtanen, A.A. Pevtsov, and K. Mursula, Reconstructing solar magnetic fields from historical observations, III. Activity in one hemisphere is sufficient to maintain the magnetic cycle in both hemispheres, Astron. Astrophys.in press, 2018.
  • Väisänen, P., I.G. Usoskin, and K Mursula, Structure of the power spectral density of galactic cosmic ray variation during 1953-2016, Proceedings of IAU Symposium no. 335 on Space Weather of the Heliosphere: Processes and Forecasts, ed. C. Foullon and O. Malandraki,International Astronomical Union, 2018.
  • Willamo, T., I.G. Usoskin, G.A. Kovaltsov, A Test of the Active-Day Fraction Method of Sunspot Group Number Calibration: Dependence on the Level of Solar Activity, Solar Phys.293, 69. 2018.
  • Wu, C.-J., N.A. Krivova, S.K. Solanki, I.G. Usoskin, Solar total and spectral irradiance reconstruction over the last 9000 years, Astron. Astrophys., 620, A120, 2018.
  • Wu, C.-J., I. G. Usoskin, N. Krivova, G.A. Kovaltsov, M. Baroni, E. Bard, S.K. Solanki, Solar activity over nine millennia: A consistent multi-proxy reconstruction, Astron. Astrophys.615, A93, 2018.

Refereed publications in 2017

  • Artamonov, A., I. Mironova, G. Kovaltsov, A. Mishev, E. Plotnikov, N. Konstantinova, Calculation of atmospheric ionization induced by electrons with non-vertical precipitation: Updated model CRAC-EPII Adv. Space Res.59, 2295-2300, 2017.
  • Asikainen, T., Calibrated and corrected POES/MEPED energetic particle observations, chapter 3.3 in book “The ESPAS e-infrastructure: Access to data in near-Earth space”, Belehaki, A., M. Hapgood and J. Watermann eds., 978-2-7598-1949-2, 2017.
  • 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.
  • 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.
  • 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.
  • Burtseva, O., S. Gosain, and A.A. Pevtsov, Search for a signature of twist-removal in magnetic field of sunspots in relation with major flares, Astrophys. J.849, 2, 2017
  • 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
  • Egeland, R., W. Soon, S. Baliunas, J. C. Hall, A. A. Pevtsov and L. Bertello, The Mount Wilson Observatory S-index of the Sun Astrophys. J.835, 1, 25, 2017.
  • Getachew, T., I.I. Virtanen, and K. Mursula Structure of the photospheric magnetic field during sector crossings of the heliospheric magnetic field, Solar. Phys.292, 174, 2017
  • Gil, A., and K. Mursula, Hale cycle and long-term trend in variation of galactic cosmic rays related to solar rotation, Astron. & Astrophys.599, A112, 2017.
  • 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.
  • 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, 2017.
  • Koskela, J., I. I. Virtanen and K. Mursula, Comparing coronal and heliospheric magnetic fields over several solar cycles, Astrophys. J.835, 63, 2017.
  • 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.
  • 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.
  • Lukianova, R., L. Holappa and K. Mursula, Centennial evolution of monthly solar wind speeds: Fastest monthly solar wind speeds from long-duration coronal holes, J. Geophys. Res. 122, 3, 2740–2747, 2017.
  • Matthes, K., B. Funke, M.E. Andersson, et al., Solar forcing for CMIP6 (v3.2), Geosci. Model Dev.10, 2247–2302, 2017.
  • Mishev, A., S. Poluainov, and I. G. Usoskin, Assessment of spectral and angular characteristics of sub-GLE events using the global neutron monitor network Space Weather Space Clim.7, A28, 2017.
  • Mursula, K., L. Holappa and R. Lukianova, Seasonal solar wind speeds for the last 100 years: Unique coronal hole structures during the peak and demise of the Grand Modern Maximum, Geophys. Res. Lett.44, 30–36, 2017.
  • Nagovitsyn, Y. A., A.A. Pevtsov and A.A.Osipova, Long-term variations in sunspot magnetic field – area relation, Astron. Nachr..338, 1, 26-34, 2017.
  • 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.
  • Pevtsov, A.A., Space Weather Forecasting and Supporting Research in the USA Geomagnetism and Aeronomy57, 7, 2017.
  • Poluianov, S., I. Usoskin, A. Mishev, M. Shea, D. Smart, GLE and Sub-GLE Redefinition in the Light of High-Altitude Polar Neutron Monitors. Sol. Phys.292, 11, 2017.
  • 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.
  • Tanskanen, E.I., R. Hynönen, and K. Mursula, Seasonal variation of high-latitude geomagnetic activity in individual years, J. Geophys. Res. Space Phys.122, 10, 2017.
  • Tanskanen, E., K. Snekvik, J.A. Slavin, D. Pérez-Suárez, A. Viljanen, M.L. Goldstein, M.J. Käpylä, R. Hynönen, L.V.T. Häkkinen, K. Mursula, Solar Cycle Occurrence of Alfvénic Fluctuations and Related Geo-Efficiency J. Geophys. Res. Space Phys.122, 10, 2017.
  • Tlatov, A.G., A.A. Pevtsov, On the timing of the next great solar activity minimum, Adv. Space Res.60, 5, 1108-1114,2017.
  • 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.
  • Usoskin, I.G. A history of solar activity over millennia, Living Rev. Sol. Phys. 14, 3, 2017.
  • Virtanen, I. I., and K. Mursula, Photospheric and coronal magnetic fields in six magnetographs: II. Harmonic scaling of field intensities Astron. Astrophys.604, A7, 2017.
  • Virtanen I.O.I., I.I. Virtanen, A.A. Pevtsov, A. Yeates, and K. Mursula, Reconstructing solar magnetic fields from historical observations, II. Testing the surface flux transport model Astron. Astrophys.604, A8, 2017.
  • 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.













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Refereed publications in 2016

  • Arsenovic, P., E. Rozanov, A. Stenke, B. Funke, J. M. Wissing, K. Mursula, F. Tummon, and T. Peter, The influence of Middle Range Energy Electrons on Atmospheric Chemistry and Climate, J. Atm. Solar-Terr. Phys.149, 180–190, 2016.
  • Artamonov, A.A, A.L. Mishev I.G. Usoskin, Atmospheric ionization induced by precipitating electrons: Comparison of CRAC:EPII model with a parametrization model J. Atm. Solar-Terr. Phys149, 161-166, 2016.
  • Artamonov, A.A., G. A. Kovaltsov, A. L. Mishev, I. G. Usoskin, Neutron monitor yield function for solar neutrons: A new computation, J. Geophys. Res.121, 117-128, 2016.
  • Artamonov, A.A., A.L. Mishev, I. G. Usoskin Model CRAC:EPII for atmospheric ionization due to precipitating electrons: Yield function and applications J. Geophys. Res.121(2), 1736-1743, 2016.
  • Asikainen, T., and M. Ruopsa, Solar wind drivers of energetic electron precipitation, J. Geophys. Res.121 (3), 2209-2225, 2016..
  • Asvestari, E., and I. G. Usoskin, An empirical model of heliospheric cosmic ray modulation on long-term time scale, Space Weather Space Clim.6, A15, 2016.
  • Egeland, R., Soon, W., Baliunas, S. Hall, J.C., Pevtsov, A.A., Henry, G.W., Dynamo Sensitivity in Solar Analogs with 50 Years of Ca II H and K Activity, The proc. of the 19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun , 2016.
  • Leussu, R., I.G. Usoskin, R. Arlt, K. Mursula, Properties of sunspot cycles and hemispheric wings since the 19th century, Astron. Astrophys.592, A160, 2016.
  • Lockwood, M., M.J. Owens, L. Barnard, C.J. Scott, I.G. Usoskin, H. Nevanlinna, Tests of Sunspot Number Sequences: 2. Using Geomagnetic and Auroral Data, Solar Phys.291, 2811-2828, 2016.
  • Lockwood, M., M.J. Owens, L. Barnard, I.G. Usoskin, Tests of Sunspot Number Sequences: 3. Effects of Regression Procedures on the Calibration of Historic Sunspot Data, Solar Phys.291, 2829-2841, 2016.
  • Lockwood, M., M. J. Owens, L. Barnard, and I. G. Usoskin, An assessment of sunspot number data composites over 1845–2014, Astrophys. J.824, 54, 2016, 2016.
  • Maliniemi, V., T. Asikainen and K. Mursula, Effect of geomagnetic activity on the northern annular mode: QBO-dependence and the Holton-Tan relationship, J. Geophys. Res. Atmos.121, 2016.
  • Martini, D., C. Argese, M. Di Loretto, and K. Mursula, Revisiting geomagnetic activity at auroral latitudes: No need for quiet curve removal, J. Geophys. Res.121,7, 6307–6323, 2016.
  • Mishev, A and I. Usoskin, Analysis of the Ground-Level Enhancements on 14 July 2000 and 13 December 2006 Using Neutron Monitor Data Sol. Phys. 291, 1225, 2016. Related erratum
  • Mishev, A. and P. I. Y. Velinov, Ionization Effect Due to Cosmic Rays during Bastille Day Event – GLE 59 on Short and Mid Time Scales Comptes rendus de l’Académie bulgare des Sciences 69(11), 1479-1484, 2016.
  • Mishev, A.L., Contribution of cosmic ray particles to radiation environment at highmountain altitude: Comparison of Monte Carlo simulations with experimental data J. Enviroment. Radioact. 153, 15-22, 2016.
  • Munteanu, C., C. Negrea, M. Echim and K. Mursula, Effect of data gaps: Comparison of different spectral analysis methods, Ann. Geophys.34, 437–449, 2016.
  • Nagovitsyn, Y.A., and A. A. Pevtsov, On the presence of two populations of sunspots, Astrophys. J.833,1, 2016.
  • Owens, M. J., E. Cliver, K. G. McCracken, J. Beer, L. Barnard, M. Lockwood, A. Rouillard, D. Passos, P. Riley, I. Usoskin, and Y-M. Wang, Near-Earth heliospheric magnetic field intensity since 1750: 1. Sunspot and geomagnetic reconstructions J. Geophys. Res.121, 6048–6063, 2016.
  • Owens, M. J., E. Cliver, K. G. McCracken, J. Beer, L. Barnard, M. Lockwood, A. Rouillard, D. Passos, P. Riley, I. Usoskin, and Y-M. Wang, Near-Earth heliospheric magnetic field intensity since 1750: 2. Cosmogenic radionuclide reconstructions J. Geophys. Res.121, 6064–6074, 2016.
  • Pevtsov, A.A., L. Bertello, P. MacNeice and G. Petrie, What if we had a magnetograph at Lagrangian L5? Space Weather14, 2016.
  • Pevtsov, A.A., I.I. Virtanen, K. Mursula, A. G. Tlatov, and L. Bertello, Reconstructing solar magnetic fields from historical observations: I. Renormalized Ca K spectroheliograms and pseudo-magnetograms, Astron. Astrophys.585, A40, 2016.
  • Poluianov, S. V., G. A. Kovaltsov, A. L. Mishev, and I. G. Usoskin, Production of cosmogenic isotopes 7 Be, 10 Be, 14 C, 22 Na, and 36 Cl in the atmosphere: Altitudinal profiles of yield functions, J. Geophys. Res. Atmos.121, 2016.
  • Roy, I., T. Asikainen, V. Maliniemi and K. Mursula, Comparing the influence of sunspot activity and geomagnetic activity on winter surface climate, J. Atm. Solar-Terr. Phys 149, 167–179, 2016.
  • Traversi, R., S. Becagli, S. Poluianov, M. Severi, S.K. Solanki, I.G. Usoskin and R. Udisti, The Laschamp geomagnetic excursion featured in nitrate record from EPICA-Dome C ice core, Sci. Rep.6, 20235, 2016.
  • 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, 2016.
  • Usoskin, I.G., G.A. Kovaltsov, T. Chatzistergos, Dependence of the Sunspot-Group Size on the Level of Solar Activity and its Influence on the Calibration of Solar Observers, Solar Phys.291, 3793-3805, 2016.
  • Usoskin, I. G., G. A. Kovaltsov, M. Lockwood, K. Mursula, M. Owens,S. K.Solanki, A new calibrated sunspot group series since 1749: Statistics of active day fractions, Solar Phys.291, 2685-2708,2016.
  • Usoskin, I.G., Y. Gallet, F. Lopes, G. A. Kovaltsov, G. Hulot, Solar activity during the Holocene: the Hallstatt cycle and its consequence for grand minima and maxima, Astron. Astrophys.587, A150, 2016.
  • Virtanen, I.I. and K. Mursula, Photospheric and coronal magnetic fields in six magnetographs: I. Consistent evolution of the bashful ballerina Astron. Astrophys.591, A78, 2016.













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Refereed publications in 2015

  • Brajsa, R., G. Verbanac, D. Sudar, I. Skokic, T. Zic, A. Hanslmeier, H. Wöhl, M. Roth, K. Mursula, and L. Zhang, A comparison between the observed and predicted amplitude of the 24th solar cycle, Cent. Eur. Astrophys. Bull., 37, 39, 1, 135-144, 2015.
  • Fournier, A., Y. Gallet, I. Usoskin, P.W. Livermore, G.A. Kovaltsov, The impact of geomagnetic spikes on the production rates of cosmogenic 14C and 10Be in the Earth's atmosphere, Geophys. Res. Lett., 42, 2759-2766, 2015.
  • Gil, A., and K. Mursula, Exceptionally strong variation of galactic cosmic ray intensity at solar rotation period after the maximum of solar cycle 24, Proc. of Science (ICRC2015) , 149, 8 p., 2015.
  • Gil, A., Usoskin, I.G., Kovaltsov, G.A., Mishev, A.L., Corti, C., Bindi, V, Can we properly model the neutron monitor count rate?, J. Geophys. Res. , in press 2015.
  • Holappa, L., and K. Mursula, Towards more reliable long-term indices of geomagnetic activity: Correcting a new inhomogeneity problem in early geomagnetic data, J. Geophys. Res.120, 8288-8297, 2015.
  • Holappa, L., K. Mursula, and T. Asikainen, A new method to estimate annual solar wind parameters and contributions of stream structures to geomagnetic activity, J. Geophys. Res. , 119, 9407–9418, 2015.
  • Juusola, L., K. Kauristie, M. van de Kamp, E. I. Tanskanen, K. Mursula, T. Asikainen, K. Andreeova, N. Partamies, H. Vanhamäki, and A. Viljanen, Solar wind control of ionospheric equivalent currents and their time derivatives, J. Geophys. Res.120, 4971–4992, 2015.
  • Käpylä, M.J., S. Solanki, I.G. Usoskin, Understanding Solar Activity, "Earth's climate response to a changing Sun", ed. T. Dudok de Wit et al., EDP Science Publ.p. 97-102, 2015.
  • Martini, D., K. Mursula, M. Orispää and H.-J. Linthe, Long-term decrease in the response of mid-latitude stations to high-speed solar wind streams in 1914-2000, J. Geophys. Res.120, 2015.
  • Mironova, I.A., K.L. Aplin, F. Arnold, G.A. Bazilevskaya, R. G. Harrison, A.A. Krivolutsky, K.A. Nicoll, E.V. Rozanov, E. Turunen, I.G. Usoskin, Energetic Particle Influence on the Earth’s Atmosphere, Space Science Rev.194, 1, 1–96, 2015.
  • Mishev, A.L., I.G. Usoskin, Numerical model for computation of effective and ambient dose equivalent at flight altitudes: Application for dose assessment during GLEs, Space Weather Space Clim.5, A10, 2015.
  • Mishev, A.L., and P.I.Y. Velinov, Time evolution of ionization effect due to cosmic rays in terrestrial atmosphere during GLE 70, J. Atmos. Solar-Terr. Phys.129, 78-86, 2015.
  • Mishev, A.L., P. I. Y. Velinov, Determination of medium time scale ionization effects at various altitudes in the stratosphere and troposhphere durign ground level enchancement due to solar cosmic rays on 13.12.2006 (GLE 70) CR Acad. Bulg. of Sci., 68(11), 1425 - 1430, 2015
  • Mishev, A.L., P. I. Y. Velinov, Ionization rate profiles due to solar and galactic cosmic rays during GLE 59 on Bastille day 14 July 2000 CR Acad. Bulg. of Sci. 68(3), 359-366, 2015.
  • Mishev, A.L., F. Adibpour, I.G. Usoskin, E. Felsberger, Computation of dose rate at ight altitudes during Ground Level Enhancements No. 69, 70 and 71, Adv. Space Res.55, 354-362, 2015.
  • Mursula, K., R. Lukianova, and L. Holappa, Occurrence of high-speed solar wind streams over the Grand Modern Maximum, Astrophys. J.801, 1, 30, 2015.
  • Mursula, K. and E.I. Tanskanen, Variability and effects by solar wind, "Earth's climate response to a changing Sun", ed. T. Dudok de Wit et al., EDP Science Publ.p. 85-89, 2015.
  • Pacini, A.A. and I.G. Usoskin, An Unusual Pattern of Cosmic-Ray Modulation During Solar Cycles 23 and 24, Solar Phys.290, 943-950, 2015.
  • Pacini, A. A., I. G. Usoskin, K. Mursula, E. Echer, and H. Evangelista, Signature of a Sudden Stratospheric Warming in the near-ground 7Be flux, Atm. Environment113, 27-31, 2015.
  • Poluianov, S., I. Usoskin, A. Mishev, H. Moraal, H. Kruger, G. Casasanta, R. Traversi, R. Udisti, Mini Neutron Monitors at Concordia Research Station, Central Antarctica, J. Astron. Space Sci.32, 281-284, 2015
  • Riley, P. et al., Inferring the structure of the solar corona and inner heliosphere during the Maunder minimum using global thermodynamic magnetohydrodynamic simulations, Astrophys. J.802, 105, 2015.
  • Solanki, S., M.J. Käpylä, I.G. Usoskin, Variations of Solar Activity, "Earth's climate response to a changing Sun", ed. T. Dudok de Wit et al., EDP Science Publ.p. 91 - 96, 2015.
  • Tanskanen, E.I. and P. Francia, Impact of solar variability on the magnetosphere, "Earth's climate response to a changing Sun", ed. T. Dudok de Wit et al., EDP Science Publ.p. 255 - 260, 2015.
  • Tlatov, A.G., K. A. Tlatova, V. V. Vasilyeva, A. A. Pevtsov, and K. Mursula, Properties of sunspot umbrae of leading and trailing polarity in 1917-2013, Adv. Space Res.55, 3, p. 835–842, 2015.
  • Usoskin, I.G., R. Arlt, E. Asvestari, E. Hawkins, M. Käpylä, G.A. Kovaltsov, N. Krivova, M. Lockwood, K. Mursula, J. O'Reilly, M. Owens, C.J. Scott, D.D. Sokoloff, S.K. Solanki, W. Soon and J. Vaquero, The Maunder minimum (1645--1715) was indeed a Grand minimum: A reassessment of multiple datasets, Astron. Astrophys.581, A95, 2015.
  • Usoskin, I.G., G. A. Kovaltsov, The carbon-14 spike in the 8th century was not caused by a cometary impact on Earth, Icarus260, 475-476, 2015
  • Usoskin, I.G., G.A. Kovaltsov, O. Adriani et al., Force-field parameterization of the galactic cosmic ray spectrum: Validation for Forbush decreases, Adv. Space Res.55, 2940–2945, 2015.
  • Usoskin, I. G., and K. Mursula, Grand minima and maxima of solar activity, "Earth's climate response to a changing Sun", ed. T. Dudok de Wit et al., EDP Science Publ.p. 111-112, 2015.
  • Vaquero, J.M., G. A. Kovaltsov, I.G. Usoskin, V. M. S. Carrasco, and M. C. Gallego, Level and length of cyclic solar activity during the Maunder minimum as deduced from the active-day statistics, Astron. & Astrophys.577, A71, 2015.
  • Zaqarashvili, T.V., R. Oliver, A. Hanslmeier, M. Carbonell, J.L. Ballester, T. Gachechiladze, I.G. Usoskin, Long-term variation in the Sun’s activity caused by magnetic Rossby waves in the tachocline, Astrophys. J. Lett.805, L14, 2015.
  • Zhang, L., K. Mursula, and I. Usoskin, Solar surface rotation: N-S asymmetry and recent speed-up, Astron. Astrophys. Lett.572, L2, 2015.

Last updated: 15.5.2019