TRENDS OF CLIMATE CHANGE IN THE BLACK SEA-CASPIAN SEA REGION DURING RECENT 30 YEARS
Abstract
Based on ERA-Interim reanalysis data and observations, the main trends in the temperature-humidity regime of the Black Sea-Caspian-Sea region (BCR) for the period of 1982–2014 were revealed. The statistically significant summer warming is associated with increasing surface sea temperature (SST) and radiation balance. Despite the growth of the total moisture content in the atmosphere and the potential convective energy no statistically significant changes in precipitation mode were revealed. The growth of total moisture content is compensated by increasing divergence of moisture due to the intensification of large-scale downward movements in the troposphere. As a result the seasonal and annual precipitation amounts show just minor changes. Perhaps this effect is a consequence of increasing frequency of summer anticyclones over the BCR. This process triggers the increase of the radiation balance due to lesser cloudiness, which leads to the increase in SST and surface air temperature.
About the Authors
P. A. Toropov
Lomonosov Moscow State University, Institute of Geography, RAS
Russian Federation
Russian Federation
Faculty of Geography, Department of Meteorology and Climatology, Associate Professor; Laboratory of Climatology, Leading Research Scientist
M. A. Aleshina
Institute of Global Climate and Ecology, RAS, Institute of Geography, RAS
Russian Federation
Russian Federation
Department of Monitoring and Probabilistic Climate Outlook, engineer; Laboratory of Climatology, engineer
V. A. Semenov
A.M.Obukhov Institute of Atmospheric Physics, RASInstitute of Geography, RAS, Laboratory of Climatology, Head of the laboratory
Russian Federation
Russian Federation
Laboratory of Climate Theory, Leading Research Scientist; Laboratory of Climatology, Head of the laboratory
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For citations:
Toropov P.A., Aleshina M.A., Semenov V.A. TRENDS OF CLIMATE CHANGE IN THE BLACK SEA-CASPIAN SEA REGION DURING RECENT 30 YEARS. Vestnik Moskovskogo universiteta. Seriya 5, Geografiya. 2018;(2):67-77. (In Russ.)
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