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Some aspects of the wind ‘Koshava’ in the lower troposphere over Belgrade

Published online by Cambridge University Press:  01 March 1999

Miroslava Unkaševic ,
Jovan Mališic  and
Ivana Tošic
Miroslava Unkaševic
Affiliation:
Department of Meteorology, University of Belgrade, P.O. Box 368, Dobračina 16, 11000 Belgrade, Yugoslavia
Jovan Mališic
Affiliation:
Faculty of Mathematics, University of Belgrade, Studentski trg 16, 11000 Belgrade, Yugoslavia
Ivana Tošic
Affiliation:
Department of Meteorology, University of Belgrade, P.O. Box 368, Dobračina 16, 11000 Belgrade, Yugoslavia
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Abstract

‘Koshava’ is a gusty wind of moderate to strong intensity, blowing from a south-easterly direction, over Serbia, Romania and Bulgaria. It is caused by the interaction between the synoptic circulation and the orography of the Carpathian and the Balkan mountains. This paper analyses wind data from an area where the influence the ‘Koshava’ wind is high during periods of maximum duration of ‘Koshava’. The focus of the paper is the examination of urban and suburban effects on ‘Koshava’ and the correlation between the instantaneous maximum wind speed and the hourly mean values. Various empirical distributions are fitted to the daily maximum wind speed and the best fit for each season and site is proposed. The vertical structure of the lower troposphere above a suburban site during the longest period of consecutive days of ‘Koshava’, which occurred in January and February 1972, is considered.

Type
Research Article
Information
Meteorological Applications , Volume 6 , Issue 1 , March 1999 , pp. 69 - 80
Copyright
© 1999 Meteorological Society

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