Assessment of Atmospheric Convective Potential Variabilityin Western Siberia in Changing Climate

Abstract

Due to the fact that the recent decades have become the warmest in the history of meteorological observations for the territory of Northern Eurasia, it is relevant to assess the long-term variability of the convective potential of the atmosphere in changing climate. The spatiotemporal dynamics of the characteristics of atmospheric instability and the frequency of occurrence of convective hazards such as thunderstorm and hail in Western Siberia are analyzed. The northward displacement of the boundaries of active convection estimated by the temperature and humidity parameters of the atmosphere has been registered in the recent decade. The duration of the thunderstorm season and the number of days with a thunderstorm per year increased, as well as the number of days with durable hail and large hail. The height of cumulonimbus clouds generated by vast thunderstorm cells is determined.