Modern trends in the temperature of the atmospheric boundary layer over Siberia region
N.Ya. Lomakina, A.V. Lavrinenko
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
Keywords: global warming, air temperature, linear trends, the atmospheric boundary layer, Siberia region
Abstract
Trends in long-term changes in the annual average and seasonal average temperatures within the atmospheric boundary layer in Siberia over 1981-2020, estimated based on observations at 24 aerological stations in winter, spring, summer, autumn, and for the year as a whole, are analyzed. It has been established 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 over the Siberian territory; the trend value decreases from north to south and with altitude. The main contribution to the regional warming of the atmospheric boundary layer climate over Siberia is made by the spring, summer, and autumn periods. The warming of the boundary layer has intensified in the past decade, from 2011 to 2020.
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