Mathematics – Logic
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja......261j&link_type=abstract
EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #261
Mathematics
Logic
Scientific paper
Fluxes of galactic cosmic rays altered by solar wind and spikes of solar cosmic rays are usually examined as one possible mechanism of solar activity influencing the Earth's atmosphere. To study effects of the solar wind variability on atmospheric processes the hourly data from meteorological station "MILOS-500" at the Antarctic base Vostok along with data from the automatic weather meteorological stations (WMS) located at the Antarctic ice dome have been examined. The detail analysis of the meteorological data (atmospheric temperature, pressure, and winds) for 1999-2001 made it possible to conclude that dramatic changes of the troposphere temperature, observed in the Southern near-pole region in relation to the interplanetary shocks, accompanying Forbush decreases (FD), are caused, in actuality, by sharp changes of the Interplanetary Magnetic Field and, correspondingly, by fluctuations in the interplanetary electric field (Esw). The warming is observed when changes in the IMF Bz component are negative and ESW increases. The typical time delay between changes in the interplanetary electric ield and appropriate response in the ground temperature is estimated. The spatial extent of the influence is derived from comparison of ffects observed at automatic WM stations surrounding the region of geomagnetic pole.
Janzhura Alexander S.
Troshichev Oleg A.
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