FEATURES OF VERTICAL MOTIONS OF THE ATMOSPHERE AT WHICH HEAVY PRECIPITATIONS ARE OBSERVED IN THE TERRITORY OF PERM REGION DURING THE WARM SEASON OF THE YEAR

Abstract

The paper considers the vertical motions of the atmosphere during heavy precipitation (≥ 50 mm/12h or ≥ 30 mm/1h) in Perm region during the period 1979-2018 on isobaric surfaces of 850, 700, and 500 hPa. The analysis of the dependence of the intensity of vertical motions on the synoptic situation, the stage of cyclone development, the nature of precipitation, average temperature of season, and topography is carried out. It is shown that the most intense upward motions are observed during frontal precipitation and cyclones that are in the stage of young baric structure. The intensity of upward motions in the case of widespread and mixed precipitation was 1,5-2 times higher than in the case of heavy rain. Construction of maps of the distribution of vertical motions in the territory of Perm region showed the influence of topography on the intensity of vertical motions.