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Mesoscale cyclones over the Black Sea

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Abstract

Considered are the results of the numerical analysis of two mesoscale cyclonic vortices generated over the Black Sea near the Caucasian coast on August 3, 2007 and August 7, 2010. It is demonstrated for the axially symmetric and more long-lived vortex occurred in 2007 that the Caucasian vortices are two-dimensional structures dying out rapidly due to the turbulent friction in the near-water boundary layer, and the deviation from the strictly two-dimensional motion is associated with the presence of the secondary circulation. The difference is demonstrated in the mechanisms of the origin of vortices in 2007 and 2010. In the first case, this is the formation of cyclonic circulation over the eastern part of the Black Sea limited by the Anatolian and high Caucasian Mountains, at the intrusion of the airflow of northwestern direction. In the second case, these are the processes of the generation of cyclonic vorticity at the baroclinic airflow running around the northwestern edge of the mountain range over the land.

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Authors and Affiliations

  1. Marine Hydrophysical Institute, ul. Kapitanskaya 2, Sevastopol, 99011, Russia

    D. A. Yarovaya & V. V. Efimov

Authors
  1. D. A. Yarovaya
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  2. V. V. Efimov
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Correspondence to D. A. Yarovaya.

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Original Russian Text © D.A. Yarovaya, V.V. Efimov, 2014, published in Meteorologiya i Gidrologiya, 2014, No. 6, pp. 28–39.

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Yarovaya, D.A., Efimov, V.V. Mesoscale cyclones over the Black Sea. Russ. Meteorol. Hydrol. 39, 378–386 (2014). https://doi.org/10.3103/S106837391406003X

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  • DOI: https://doi.org/10.3103/S106837391406003X

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