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National Repository of Grey Literature 6 records found  Search took 0.01 seconds. 
Solar and geomagnetic activity effects on the troposphere behaviour in winter 1981/1982
 Bochníček, Josef ; Hejda, Pavel ; Huth, Radan
Tha association between the changes in solar/geomagnetic activity and changes in the lower atmosphere pressure, temperature and wind fields was analyzed for the Northern Hemisphere winter of 1981/1982.
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The relations among the distribution of prevailing winds in the winter Northern Hemisphere, solar/geomagnetic activity and QBO phase
 Bochníček, Josef ; Hejda, Pavel
The effect of solar/geomagnetic activity on the distribution of prevailing winds in the winter Northern Hemisphere was analysed in the winter periods of the years 1964-2001. It was found out, that while the strengthening of zonal flow over the winter North Atlantic was associated with high solar as well as geomagnetic activity, the occurrence of the meridional flow over the winter North Atlantic was associated with low solar activity only.
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Analysis of the relation between geomagnetic activity and the phase of the North Atlantic Oscillation
 Bochníček, Josef ; Hejda, Pavel ; Pýcha, Josef
The North Atlantic Oscillation is considered to be a very robust phenomenon. The analysis of tropospheric pressure and temperature deviations from their long-term averages realised on the data set of winter (January-March) periods 1963-2001, as well as wind deviations from their long-term averages pointed at close association between high geomagnetic activity and the positive NAO phase.
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Solar and geomagnetic activity effects on wind fields in the Northern hemisphere winter lower troposhere
 Bochníček, Josef ; Hejda, Pavel
The magnitude and prevailing direction of winds in the lower troposphere were analysed in the Northern hemisphere in the winter periods of the years 1964, 1967-1969, 1971-2001. Composite maps of those winds showed marked differences, in particular between the maps in which both activities were simultaneously low or high.
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Solar-geomagnetic activity and weather changes. Observation results
 Bochníček, Josef ; Hejda, Pavel ; Pýcha, Josef
The impact of solar and geomagnetic activity on pressure and temperature changes in the winter lower troposphere was investigated. It was found that although correlations between solar and geomagnetic activity in individual winter periods are weak, the pressure and temperature changes show similar magnitudes.
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Physical plausibility of "Sun-weather" research
 Bochníček, Josef ; Hejda, Pavel ; Pýcha, Josef
The paper deals with the importance of three basic objections against the existence of causal link between the changes of atmospheric fields in the lower troposphere.
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