Comparison of Atmospheric Ionization for Solar Proton Events of the Last Three Solar Cycles
Eugene A. Maurchev,
Nataly S. Shlyk,
Alexey V. Dmitriev,
Maria A. Abunina,
Kseniia A. Didenko,
Artem A. Abunin,
Anatoly V. Belov
Affiliations
Eugene A. Maurchev
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of Russian Academy of Sciences (IZMIRAN), Kaluzhskoe hw., 4, Troitsk, 108840 Moscow, Russia
Nataly S. Shlyk
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of Russian Academy of Sciences (IZMIRAN), Kaluzhskoe hw., 4, Troitsk, 108840 Moscow, Russia
Alexey V. Dmitriev
D.V. Skobeltsyn Institute of Nuclear Physics, M.V. Lomonosov Moscow State University, Leninskie Gory 1/2, 119899 Moscow, Russia
Maria A. Abunina
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of Russian Academy of Sciences (IZMIRAN), Kaluzhskoe hw., 4, Troitsk, 108840 Moscow, Russia
Kseniia A. Didenko
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of Russian Academy of Sciences (IZMIRAN), Kaluzhskoe hw., 4, Troitsk, 108840 Moscow, Russia
Artem A. Abunin
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of Russian Academy of Sciences (IZMIRAN), Kaluzhskoe hw., 4, Troitsk, 108840 Moscow, Russia
Anatoly V. Belov
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of Russian Academy of Sciences (IZMIRAN), Kaluzhskoe hw., 4, Troitsk, 108840 Moscow, Russia
Numerical modeling of primary cosmic ray protons’ transport through the Earth’s atmosphere was performed for the energy spectra of solar energetic particle events (SEPs). Several events in the last three solar cycles were considered. A comparative analysis of the characteristics of coronal mass ejections and primary proton fluxes was carried out. The main results were quantitative estimates of the calculated atmospheric ionization count rate for a wide range of altitudes (from sea level up to 98 km). The difference in the influence of solar protons on the Earth’s atmosphere is considered for seven SEPs divided into three groups with similar solar sources (X-flare magnitude and coordinates) but with different characteristics of accelerated particle fluxes. The data obtained in this work are very important for future studies of radio wave propagation, atmospheric chemistry and climate change.
