Changes in the Climatic Characteristics of the Western Taiga of European Russia in the Late XX–Early XXI Centuries
https://doi.org/10.31857/S0869607121010055
Abstract
Changes of the main climatic indicators of the western part of the East-European taiga (boreal zone) for the period from 1991 to the present time in comparison with the same indicators for the period 1960–1990 are considered, according to 35 meteorological stations data: mean monthly air temperatures of January and July, annual precipitation, annual sums of average daily air temperatures exceeding +10°C, number of days per year with average daily temperature above +10°C. For all the indicators under consideration, changes of the values for the period since 1991 compared to the base period were calculated; linear trends and average rates of change of indicators in the base and current periods are established. Changes in climate indicators are considered in the context of three main subzones of the taiga of Eastern Europe – northern, middle and southern. A significant increase in air temperatures over the entire territory under consideration for the period after 1991 compared to the period 1960–1990 was revealed, and the increase in winter temperatures is significantly greater than in summer. The average annual sums of atmospheric precipitation in the considered territory varied in different directions: in the northern and western parts, they mainly increased over the past 25 years, and in the south-eastern part, they mainly decreased. On the whole territory, the sum of average daily temperatures exceeding +10°С increased significantly and the number of days with average daily temperatures above +10°C as well. Comparison of the ranges of heat supply indicators established for the subzones of the western part of the taiga of the European Russia based on meteorological data obtained before the middle of the XX century and calculated for the last 25–29 years allows us to draw conclusions about the existence of climatic prerequisites for shifting the boundaries of the taiga zone and its subzones in the northern direction.
About the Authors
A. I. Reznikov
Saint-Petersburg State University
Russian Federation
Russian Federation
G. A. Isachenko
Saint-Petersburg State University
Russian Federation
Russian Federation
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Review
For citations:
Reznikov A.I., Isachenko G.A. Changes in the Climatic Characteristics of the Western Taiga of European Russia in the Late XX–Early XXI Centuries. Proceedings of the Russian Geographical Society. 2021;153(1):3-18. (In Russ.) https://doi.org/10.31857/S0869607121010055
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