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Atmospheric transparency variations associated with geomagnetic disturbances
Institution:1. Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences, Staromonetnyi per. 35, Moscow, 119017, Russia;2. A.P. Vinogradov Institute of Geochemistry, Siberian Branch of the Russian Academy of Sciences, ul. Favorskogo 1a, Irkutsk, 664033, Russia;1. V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia;2. Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia;3. A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia;4. G.K. Boreskov Institute of Catalysis, pr. Akademika Lavrent’eva 5, Novosibirsk, 630090, Russia;5. Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Lavrent’eva 10, Novosibirsk, 630090, Russia;1. A.P. Vinogradov Institute of Geochemistry, Siberian Branch of the Russian Academy of Sciences, ul. Favorskogo 1a, Irkutsk, 664033, Russia;2. Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences, Staromonetnyi per. 35, Moscow, 109017, Russia;1. Computational Geophysics Laboratory, Tomsk State University, Tomsk 634050, Russian Federation;2. Department of Mathematical Sciences, Loughborough University, Loughborough, LE11 3TU, UK
Abstract:Geomagnetic storm-time variations of the atmospheric transparency in various latitudinal regions are considered. It is shown that the solar radiation measured at the Earth's surface at local noon increases by approximately 0.1 cal/cm2 min at latitudes ? = 60–70° during geomagnetic disturbances. At middle latitudes (?≈ 50°) this effect is not observed. The variation of the atmospheric transparency is shown to be associated with a simultaneous decrease of the galactic cosmic ray intensity.
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