Height variability of solar effects on dynamical processes of middle atmosphere

Abstract

Large-scale changes observed in the atmosphere can be explained by the connection with solar processes. For region of Kazan the within-year variability is mainly determined by annual and semi-annual oscillations, which are investigated in the present work. The analysis of height profiles of coefficients of dependence of these processes on solar activity demonstrates the expressed height variability of their values, even change of their sign. The most expressed 11-year oscillation of the solar activity is in antiphase with 11-year periodicities of variations of annual average values of zonal wind. For the series of amplitudes of annual oscillations it is in phase with solar activity variations. In all probability, the most expressed solar effects on large-scale dynamic processes of atmosphere are mainly caused by 11-year periodicity of variations of solar activity. © 2006.