Impact of Short-Term Geomagnetic Activity on Weather and Climate Formation in Georgian Region

Atmospheric Periodic Oscillations

“…Two factors, which force the NAO, are the solar cycle and to a lesser extent the Quasi-Biennial Oscillation QBO); the oscillation between easterly and westerly winds in the equatorial stratosphere. Solar activity is found to influence the NAO such that strongly negative winter NAO values (which cause cold and dry conditions in North West Europe) rarely occur during periods of high solar activity [18,19].…”

“…The winds in the eastward phase of the QBO are approximately twice as strong as those in the westward phase. The signal of the QBO cycle was detected not only in the variability of the stratospheric zonal and meridional wind, temperature, and geopotential height [15,16], but also in its influence on the surface meteorological parameters as well, for example, air temperature [17,18], precipitation [19][20][21][22], and snow cover [23,24]. In previous studies, the significant QBO signal was detected in September and October precipitation in the period from1953 to the 1980s in the region of the British Isles, in the Central European region and in Belarus.…”