Synoptyczne uwarunkowania zjawisk niebezpiecznych dla lotnictwa

Abstract
The aim of the paper is to assess the influence of atmospheric circulation on the occurrence of fogs, low-base clouds, strong winds and thunderstorms. The research is based on the data from the period 1996–2005 coming from the Cracow-Balice meteorological station as well as on the synoptic situations’ classification elaborated by T. Niedźwiedź. In the essential part of the research, days when particular phenomena occurred were analyzed andspecific weather elements’ values were determined. Their probability during particular circulation types was calculated. The research results would suggest that fogs occur most likely during the advection from S and SW related with the high; moreover, during the high pressure center and the wedge of high pressure. Low-base clouds occur typically during the advection from E and SE, regard-less of the pressure pattern; furthermore, during the low pressure center and the trough of low pressure. Strong wind occurrence is most likely accompanied by the advection from W and NW, related with the low. Thunderstorms are mostly favoured by the low pressure center and the trough of low pressure.
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