CHANGES OF THERMAL REGIME IN TROPO-STRATOSPHERE OVER BASHKORTOSTAN TERRITORY

Abstract

Space-time changes of thermal regime in the territory of the Republic of Bashkortostan are considered according to the data of ERA-Interim and ERA5 reanalysis for 1979-2018. A trend of warming of the regional climate in the troposphere and cooling in the stratosphere has been identified. Vertical profiles of air temperature, coefficient of inclination of linear trend of temperature from ground level up to 47 km have been built, assessment of correlations between atmosphere layers has been given. The role of atmospheric circulation in seasonal changes in temperature regime has been revealed. In winter, Arctic oscillation has been shown to contribute to warming in the lower layers of the troposphere and cooling in the middle and upper stratosphere. Long-term changes in air temperature in the period 1888-2018 have been calculated from weather surveillance at Ufa station. It has been shown that the warming of the climate in the region near the Earth's surface occurs most intensively during the winter-spring period (the value of the slope factor of the linear trend of air temperature in January 0,18 °C/10 years), and the most active phase of climate warming is in 1970-2018.