Abstract
Possible reasons for the temporal variability of solar activity (SA) and galactic cosmic ray (GCR) effects on the tropospheric circulation are studied. Long-term variations in the amplitude and sign of SA/GCR effects are shown to be closely related to the state of the stratospheric circumpolar vortex. A ∼60-year periodicity was detected the vortex strength which affects the evolution of the large-scale atmospheric circulation. It is shown that the correlation coefficients between pressure in the troposphere and SA/GCR characteristics change the sign in the periods of transformations of the large-scale circulation caused by changes in the state of the vortex. The obtained results suggest an important part of the circumpolar vortex in the mechanism of solar-climate links.
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Veretenenko, S.V., Ogurtsov, M.G. Stratospheric circumpolar vortex as a link between solar activity and circulation of the lower atmosphere. Geomagn. Aeron. 52, 937–943 (2012). https://doi.org/10.1134/S0016793212070201
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DOI: https://doi.org/10.1134/S0016793212070201