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UDC 551.5

Slizhe Mariia Olehivna, Odessa State Environmental University,Odessa, Ukraine, e-mail:

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Semenova Inna Heorhiyivna, Doctor of Geography Sciences, Professor, Odessa State Environmental University, Odessa, Ukraine, e-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

 

SYNOPTIC CONDITIONS OF THE FORMATION THE DRY WINDS IN UKRAINE IN THE END OF THE XX - THE BEGINNING OF THE XXI CENTURY

Purpose. Synoptic processes leading to the emergence of the dry winds in Ukraine in recent decades need to establish.

Method. For determination of the synoptic processes leading to the emergence of the dry winds in different agroclimatic zones of Ukraine, the days in which this phenomenon was observed only within one zone, were selected. Based on this days, using the NCEP reanalysis data, the mean surface pressure fields, the absolute topography of the isobaric surface of 500 hPa fields and their anomalies relative to the climatic (base) period 1981-2010, were constructed for each month of the vegetation period (April-August).

Results. In the spring months, the dry winds formed in front part of the cyclones located above Central and Southern Europe. In the summer in the Polissya and the Steppe zone formation of the dry winds occurred during the development of anticyclonic processes from the west. In the Forest-Steppe zone the formation of the dry winds occurred under the development of synoptic processes from the east. The upper-level baric field was characterized by the predominant establishment of a meridional circulation type over the European sector.

Scientific innovation. In this study were established the synoptic processes leading to the emergence of the dry winds in Ukraine, which forming in modern climatic conditions.

Practical significance. The dry winds have a significant repeatability in Ukraine during the vegetation period, causing damage to the future crop. The dry winds occur in certain synoptic situations, and the advance establishment of they, contributes to improving the quality of the forecast of dry wind and its consequences.

Keywords: dry wind, synoptic process, pressure field, pressure anomalies.

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Last Updated on Wednesday, 22 May 2019 15:55