VARIATIONS IN THE SURFACE AIR TEMPERATURE IN THE SOUTH OF SIBERIA AND THEIR RELATIONSHIP WITH LARGE-SCALE CIRCULATION PROCESSES IN THE ATMOSPHERE

Abstract

The article analyzes changes in surface air temperature in the south of Siberia, in 8 regions of the Russian Federation. Based on the geographical and climatic approaches, the study area was divided into four zones. It is shown that interannual changes in air temperature both within the identified zones and between them are consistent, while changes in the series of average monthly air temperatures are not so unambiguous. The calculated values of the linear trends of long-term changes in the mean annual air temperature indicate that, despite its widespread significant increase, in the last decade, a slowdown in the temperature growth has been noted across the territory of southern Siberia. An increase in air temperature is observed in almost all months of the year, with the exception of the winter period, when, according to data from individual meteorological stations, a slight fall in temperature is noted. An assessment of the relationship between air temperature and circulation mechanisms, carried out using correlation analysis, indicates a significant influence of the Scandinavian teleconnection index practically throughout the year in zones related to areas of continental climate. In areas of a sharply continental climate, its influence decreases to some extent, especially in summer, although it remains the leading factor in some months. The ongoing climatic changes cannot but entail both positive and negative socio-economic effects. In this regard, the results of the research should be taken into account when developing mechanisms for adapting the economy to climate change at regional levels.