Petrov V. The structure and evolution of cumulonimbus clouds on the northwestern Black Sea coast

Object - mesoscale fields of cumulonimbus clouds on the northwestern Black Sea coast. Purpose - complex experimental investigation time and space characteristics of the fields of cumulonimbus clouds which are formatted under the certain forms of mesocirculation. Methods - the radar sounding of atmosphere, statistical methods. The classification of the Sea breeze fronts on the basis of the determinativeness of mesoscale clouds clusters in the sea coast .is suggested On the radar data the horizontal scales of the sea-breeze circulation are evaluated. The technique of evaluation of horizontal divergence on the basis of radar data is suggested. The mesoscale secondary systems of clusters of the radar echo of cumulonimbus clouds developing in parallel with the Sea breeze fronts are revealed. It is shown that the intensity of the cumulonimbus clouds radar echo field at Sea breeze fronts are changed with the time, semi periodically, and its statistical characteristics are investigated. The technique of forecasting and evolution of the sea breeze fronts on the northwestern Black Sea coast are developed.