Physics
Scientific paper
Oct 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998biopk..43..858r&link_type=abstract
Biophys. (Russia), Vol. 43, No. 5, p. 858 - 863
Physics
Solar-Terrestrial Relations: Climatic Changes, Solar-Terrestrial Relations: Earth Atmosphere, Solar-Terrestrial Relations: Cosmic Rays, Solar-Terrestrial Relations: Solar Cosmic Rays
Scientific paper
Analysis of experimental data demonstrates that cosmic ray enhancement stimulates an increase in atmospheric aerosols and cloudiness. The study of solar proton events (SPE) has shown that during SPE one can observe an increase in aerosol density by a factor of 1.2 - 1.4 at 12 - 18 km altitudes. Such variations of aerosol density can be detected on a global scale. Aerosol variations cause changes in the integral atmospheric transparency, which can reach 5 - 6% during disturbed periods. The atmospheric integral transparency variations are not less during the solar cycle on account of galactic cosmic ray variations. Atmospheric transparency variations creating the so-called "grey filter" for solar radiation should lead to surface temperature variations. During the periods of low solar activity under the influence of enhanced galactic cosmic ray fluxes, the density of the "grey filter" should increase and accordingly cause a decrease in surface temperatures. In the framework of the physical mechanism considered, the connection between solar cycle duration and surface temperature variation can be explained. In addition, one can understand the physical reason for the "Little Ice Age" appearance during the Maunder minimum of solar activity, the 2400-year periodicity of climatic processes, the strong influence of the decrease in the main geomagnetic field intensity on the development of Ice Age and Global Cooling.
Kasatkina E. A.
Raspopov Oleg M.
Shumilov O. I.
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