Variability of the Atmospheric Anticyclones and Their Connection with Surface Temperature Variations in Extratropical Latitudes of the Northern Hemisphere in Recent Decades

Abstract

We have obtained quantitative estimates of the spatial and seasonal features of the characteristics of anticyclones in the atmosphere of the Northern Hemisphere and their changes in recent decades using ERA5 reanalysis data (1979–2021). A high correlation between the interannual variations of the mean seasonal occurence of anticyclones and near-surface temperature over extensive regions in the extratropical latitudes of the Northern Hemisphere is noted. According to the estimates, up to 60% of the interannual variance of near-surface temperature in winter and summer is associated with variations in the mean seasonal occurence of anticyclones and up to 50% with variations of intense winter and summer anticyclones.