Solar activity and cosmic ray variations as a factor of intensity of cyclonic processes at midlatitudes

Solar rhythms in the characteristics of the Arctic frontal zone in the North Atlantic

“…Thus, the variations revealed in the AFZ temperature gradients seem to imply the changes in the potential energy in the high-latitude atmosphere associated with solar activity phenomena which may be considered as a possible energetic source for solar activity effects on extratropical cyclogenesis on the time scale $10-20 yrs . The results obtained confirm a suggestion that a mechanism of the influence of solar activity phenomena on the development of baric systems at middle latitudes involves changes in the frontal zone characteristics both on the long-term and short-term time scales (Veretenenko et al, , 2007Veretenenko and Thejll, 2008).…”

Galactic Cosmic Rays and Low Clouds: Possible Reasons for Correlation Reversal

“…LCA variations in both hemispheres seem to be also characterized by a roughly 20-year periodicity. This periodicity, which is close to the magnetic Hale cycle on the Sun, was detected in many climatic parameters (for example, see [51,52]), including the intensity of extratropical cyclogenesis in the North Atlantic [53]. Thus, the ~20-year periodicity indicates a link between cloudiness and the evolution of dynamic processes in the lower atmosphere.…”

The influence of solar activity on action centres of atmospheric circulation in North Atlantic

“…One should note that the former region (around 40 • W and 60 • N) is also known as the main domain of Icelandic cyclogenesis (Schneidereit et al, 2006) at the polar front; thus suggesting a possible connection between solar activity and cyclogenesis, mentioned e.g. by Veretenenko et al (2006). The overall shape of the area where Icelandic cyclones occur, mainly its spatial consistency over the North Sea in high solar activity, points to the fact that during high solar conditions, the northeasterly track of cyclones over this area is more favoured, supporting results of Huth et al (2006) and Barriopedro et al (2008) who observed a tendency toward a stronger zonal circulation.…”