On some new statistical characteristics of the wind "Koshava"

Abstract

"Koshava" is a gusty wind of moderate to strong intensity, blowing from the south-eastern direction, over the area of the Republic of Serbia. It is caused by the interaction between the synoptic circulation and the orography of the Carpathian and the Balkan mountains. The "Koshava" wind can damage buildings, factories and industrial plants or city infrastructure. Therefore it is important to estimate its gust and the gustiness factor on the basis of the measured data. This paper discusses a statistical analysis of wind data in the maximum influence area of the "Koshava" wind in the periods of maximum duration of "Koshava". The focus of the paper is the examination of urban and suburban effects on "Koshava" wind and the correlation between the instantaneous maximum wind speed and the hourly mean wind speed. The best fitting with various empirical distributions is proposed.