SEASONAL VARIATIONS OF EVAPORATION FROM THE CASPIAN SEA SURFACE WITH ACCOUNT OF WIND WAVES AND SEA DEPTH
Abstract
An empirical relationship describing the changes in evaporation from a water body in relation to itsdepth and wave heights is used to assess the intensification of monthly average evaporation from theCaspian Sea surface. The data used in this study includes the digital bottom relief model of the Caspian Seawith a spatial resolution of 5 km, data on significant wave heights (SWH) and the latent heat net flux. SWHvalues were calculated by means of the SWAN numerical model based on wind fields from the NCEP/NCAR reanalysis. Latent heat net flux values were derived from the NCEP/NCAR reanalysis as well. The averaged February, May, August and November values are described in this study. The impact ofwaves and bottom depth on the evaporation is most expressive in the shallow northern part of the CaspianSea. The values of evaporation increase range there from 10–15 W/m2 in May to 20–40 W/m2 in August.This effect is also observed in the southeastern areas of the sea and off the Apsheron Peninsula; in the lattercase the intensification of evaporation is observed only in February and November, i.e. during the stormiestseasons.
About the Authors
F. N. Gippius
Lomonosov Moscow State University
Russian Federation
Faculty of Geography, Department of Oceanology, Scientific Researcher;
Russian Federation
Faculty of Geography, Department of Oceanology, Scientific Researcher;
V. S. Arkhipkin
Lomonosov Moscow State University
Russian Federation
Faculty of Geography, Department of Oceanology, Associate Professor, Ph.D in Geography;
Russian Federation
Faculty of Geography, Department of Oceanology, Associate Professor, Ph.D in Geography;
A. V. Frolov
Institute of Water Problems, RAS
Russian Federation
Laboratory of Global Hydrology, Senior Scientific Researcher, Doctor of Engineering Sciences
Russian Federation
Laboratory of Global Hydrology, Senior Scientific Researcher, Doctor of Engineering Sciences
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Review
For citations:
Gippius F.N., Arkhipkin V.S., Frolov A.V. SEASONAL VARIATIONS OF EVAPORATION FROM THE CASPIAN SEA SURFACE WITH ACCOUNT OF WIND WAVES AND SEA DEPTH. Vestnik Moskovskogo universiteta. Seriya 5, Geografiya. 2016;(5):86-92. (In Russ.)
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