UDC 551.582

Trofimova I.E., Balybina A.S. CLIMACTIC DETERMINATION OF INSULAR STEPPE DEVELOPMENT IN THE SOUTHERN PART OF EASTERN SIBERIA // Arid Ecosystems. 2024. Vol. 30. № 2 (99). P. 12-23. | PDF

In this article we discuss perennial climatic conditions in the “near-ground air layer – soil” system in the insular steppe of the southern part of Eastern Siberia. We found out that the more severe the winters grow and the higher the climate continentality of the near-ground atmosphere from southwest to north-east is, the deeper the soils cool down in winter season, while the summer warming slightly increases in the same geographical direction. Substantial differences in the annual amplitude of underground temperature were detected for spatially separated insular steppe, with the highest value in the Southern Transbaikalia which corresponds to the strongly continental soil climate. Variations in annual mean air and soil temperatures and annual atmospheric precipitation for recent decades were determined using their perennial data series. The linear trends for air and soil temperatures are positive almost in every area, and their perennial series are highly coherent. Atmospheric precipitation in Southern Transbaikalia tends to decrease. The insignificant positive and negative trends were detected in Cisbaikalian weather stations.

Keywords: insular steppe of Eastern Siberia, air and soil temperature, atmospheric precipitations, regional climate changes, Cisbaikalia, Transbaikalia, trends.

Funding. The research was carried out within the framework of the State assignment on the topic of research AAAAA 21-121012190059-5 «Study of the structural and functional organization of geosystems of Siberian regions for planning sustainable territorial development» 2021-2025.

DOI: 10.24412/1993-3916-2024-2-12-23
EDN: QYVGJ