BORA AS KATABATIC WIND

A case of strong bora wind, on the eastern Adriatic Coast 5-7 March 1982 (ALPEX SOP - Special Observation Period) is considered. The radiosounding observations at Pula and Zadar in addition to an analysis of the surface wind data and the synoptic situations, make possible an analysis of vertical bora profile. lt is concluded that maxima wind speeds occur mostly in the layer from 0.5-2 km with a change of wind direction from NE, prevailing in the boundary layer, to SE at a height of 2 km. This is shown by presentation of katabatic wind components, especially pronounced on 6 March, and characterized by the strongest bora wind during ALPEX SOP.