Modern Trends of Temperature of the Atmospheric Boundary Layer over Siberia

We discuss the results of analyzing the trends of long-term changes in the annual average and seasonal average temperatures in the atmospheric boundary layer in Siberia over 1981–2020 in winter, spring, summer, autumn, and for the year as a whole estimated based on observations at 24 aerological stations. It is found that during the 40-year period under study, statistically significant positive trends in the annual average air temperature are observed throughout the atmospheric boundary layer in Siberia; the trend value decreases from north to south and with altitude. The main contribution to the regional climate warming in the atmospheric boundary layer over Siberia is made by the spring, summer, and fall. The warming of the boundary layer has intensified in the past decade (2011–2020).