Record details

    Geomagnetic Forcing on Climatic Variations
Statement of responsibility
    Václav Bucha
Other titles
    Upper Pleistocene and Holocene Climatic Variations (Variant.)
    Bucha, Václav
Source title - serial
    Vol. 11
    p. 17-19
    2 obr., 10 bibl.
    Zkr. název ser.: Geolines (Praha)
Subject group
    pole magnetické
Geographical name
Abstract (in english)
   The influence of geomagnetic forcing on variations of the global circulation including North Atlantic Oscillation (NAO) in the region between Europe and North America, variability of the rainfall in the Asian Monsoon region and the El Niňo-Southern Oscillation (ENSO) in the Pacific region is studied. Statistically significant correlation coefficient were found between geomagnetic activity, the sea level atmospheric pressure (s.l.p.) and temperature. Enhanced geomagnetic forcing is shown to lead to the intensification of the westerly zonal flow across the Atlantic and to above-normal winter temperatures in Europe and northern Asia. Relatively high correlation coefficient that were found between changes in geomagnetic activity, the All India Rainfall Index (AIRI) and ENSO justify us to suggest that the increase of geomagnetic activity in April strengthens the zonal flow also on the southern hemisphere in the southern fall and winter.
   Strong southerly winds and the cross-equatorial flow extend across the entire Indian Ocean leading to the above-normal monsson rainfall in India in June, July and August; La Niňa (Cold event - CE) usually follows in the Pacific Ocean. At a time of the decreased geomagnetic activity in April the Australian high intensifies, the southerly cross-equatorial flow in the Indian Ocean is much weaker in the southern winter and the monsoon rainfall is deficient. El Niňo (Warm event - WE) is usually observed in the Pacific
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    28. 3. 2008
Import date
    8. 8. 2012