Statistical characteristics of cyclones and anticyclones over the Black Sea in the second half of the 20th century |
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Authors: | A B Polonskii M Yu Bardin E N Voskresenskaya |
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Institution: | (1) Marine Hydrophysical Institute, Ukrainian National Academy of Sciences, Sevastopol, Ukraine;(2) Institute of Global Climate and Ecology, Russian State Committee on Hydrometeorology and Russian Academy of Sciences, Moscow, Russia |
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Abstract: | By using the NCEP reanalysis data for 1952–2000, we estimate the parameters of cyclones and anticyclones in the Black-Sea region and evaluate
the statistical characteristics of their variability for each season. It is shown that the frequency of cyclones decreases
in all seasons (except summer) as a result of the intensification of the North Atlantic Oscillation in the 1960–90s and the
displacement of the predominant paths of synoptic disturbances to the north. For anticyclones, we reveal the opposite trend.
The parameters of cyclones and anticyclones are characterized by quasiperiodic variations on the subdecadal scale also induced
by the North Atlantic Oscillation.
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Translated from Morskoi Gidrofizicheskii Zhurnal, No. 6, pp. 47–58, November–December, 2007. |
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