ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2015, Vol. 12, No. 2, pp. 162-172

Dynamics of moisture and heat fluxes in transitional landscape zones from satellite and meteorological data in the beginning of the XXI century

V.V. Vinogradova1 , T.B. Titkova1 , E.A. Cherenkova1 
1 Institute of Geography RAS, Moscow, Russia
The paper analyzes the changes in heat and moisture conditions of transitional natural landscapes, where heat and moisture are the limiting factors for the existence of vegetation (in forest-tundra, forest-steppe and broadleaf forests areas) in European Russia and Western Siberia in the early XXI century, in relation to climatic fronts. To assess changes in heat, the sum of active temperatures (air temperature above +10°C) is used. The dynamics of moisture is estimated based on the satellite index of climate extremes (SCEI) and hydrothermal Selyaninov coefficient (SCC). The revealed patterns of warming and increase in frequency of droughts over the first decade in the forest-steppe and broadleaf forests, associated with the position of the Polar front, indicate trends of vegetation change in the area. The increase of the sum of active temperatures and slight variation of moistening due to the quasi-stationarity of the Arctic front in the forest-tundra zone facilitate the advance of boreal forests to the north.
Keywords: sum of active temperatures, satellite index of climate extremes (SCEI), Selyaninov hydrothermal coefficient (SCC), the landscape, the Arctic front, Polar front
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