SYNOPTIC PATTERNS OF EXTREME WIND SPEED IN THE BARENTS SEA
Abstract
Long-term regime of extreme values of the surface horizontal wind speed (V) was studied for the open part of the Barents Sea basing on the ERA-Interime reanalysis data for 1981-2010. Empirical distribution functions of V were estimated. Spatial and temporal analysis of the median and extreme V (95th, 99th and 99.9th percentiles) variability was carried out. No long-term trend was revealed for the whole period, but in the 1990s wind speed extreme values tended to be higher. The latter is in agreement with the increase of the southern type of meridian circulation (according to Dzerdzeevsky’s classification). Sea level pressure patterns for the days with high V (99%) were classified into four circulation types. It is shown that the majority of such cases were characterized by active cyclones passing over the sea, and wind direction in different sea parts depended on the cyclone center position. The year-to-year variability was studied for every circulation type. Quantitative description of sea level pressure patterns for high wind speed values allowed processing the long-term data set and creating a basis for the future evaluation of projected extreme patterns under possible climate changes.
About the Authors
G. V. Surkova
Lomonosov Moscow State University
Russian Federation
Russian Federation
Faculty of Geography, Department of Meteorology and Climatology, Associate Professor, PhD. in Geography
A. A. Krylov
Lomonosov Moscow State University
Russian Federation
Faculty of Geography, Department of Meteorology and Climatology, student
Russian Federation
Faculty of Geography, Department of Meteorology and Climatology, student
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Review
For citations:
Surkova G.V., Krylov A.A. SYNOPTIC PATTERNS OF EXTREME WIND SPEED IN THE BARENTS SEA. Vestnik Moskovskogo universiteta. Seriya 5, Geografiya. 2016;(6):18-25. (In Russ.)
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