ANALYSIS OF MODERN SPATIO-TEMPORAL CHANGES IN AIR TEMPERATURE IN THE TRANS-BAIKAL TERRITORY

Abstract

The article presents a spatio-temporal assessment of the changes in meteorological parameters characterizing the temperature regime of the Trans-Baikal Territory during the period of modern warming, which began in the mid-1970s. We analyzed both the average annual and average seasonal air temperatures as well as important indicators of heat supply such as stable periods with different air temperatures, a period without frosts, their beginning and end, the sum of air temperatures above 5 and 10°C. The distribution of the considered characteristics and their changes by geo-administrative districts of the region is shown. For the study period, along with an increase in the average annual air temperature, mainly associated with intensive growth in the spring months, there is also noted an increase in the duration of stable periods above certain air temperatures and a period without frosts. The dates of their onset began to be noted earlier in the spring and later in the autumn. The sums of temperatures above 5 and 10°C have also increased. The last decade has been characterized by the most intensive rise in air temperatures, especially in the winter months. As a result, the growth rate of most of the other parameters considered in the paper, which mainly characterize the heat supply of the warm period, has been declining in recent years. The results obtained can be used as a scientific basis for planning sectoral and regional strategies for adaptation to modern climate change.