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National Repository of Grey Literature 17 records found  previous11 - 17  jump to record: Search took 0.00 seconds. 
Solar/geomagnetic aktivity, temperature of the winter polar lower stratosphere, the QBO phase and the stratospheric polar vortex
 Bochníček, Josef ; Hejda, Pavel ; Huth, Radan ; Davídkovová, Hana
Labitzke (1987) has found a strong correlation between lower stratosphere temperature and solar cycle for data divided according to the QBO phase. This correlation explained why low solar activity combined with QBO-east phase or high solar activity and QBO-west phase was often followed by stratospheric warming and disturbed polar vortex. On th other hand, Arnold and Robinson (2001) have shown that high geomagnetic activity gives rise to cooling of lower stratosphere and leads to the strenghtening of polar vortex.
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Possible external factors influencing the occurrence of heart tachyarrhythmia
 Střeštík, Jaroslav ; Mikulecký, M.
The second author recorded during 24 years nearly 400 cases when he was attacked by heart tachyarrhythmia. This appeared during the years more often, in the last year as much as three cases in a month. Only weak dependence of arrhythmia attacks on the season or on the week has been found.
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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 problems connected with geomagnetic activity forecasts in the different phases of the last solar cycle
 Hejda, Pavel ; Bochníček, Josef
The paper analyses the successfulness of forecasts of the geomagnetic disturbed days, carried out in the years 2000-2003. A day was considered as disturbed if geomagnetic activity at the Budkov observatory reached the level "active" or higher.
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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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Lengths of grapewine sprouts, air temperatures and heliogeophysical factors from the point of view of chronobiology
 Střeštík, Jaroslav ; Mikulecký, M.
Series of sunspot numbers, indices of geomagnetic activity, mean air temperature in April and grapewine lengths measured to the 24th April were processed by power spectra and mutual coherences. Whereas spectra of sunspot numbers exhibit a pronounced peak at 11 yr, in spectra of other quantities more significant peaks occur.
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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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National Repository of Grey Literature : 17 records found   previous11 - 17  jump to record:
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