Open AccessPHASE STATE OF ATMOSPHERIC PRECIPITATION IN THE PERM REGION
Author(s) -
Evgenia V. Pishchalnikova,
E. V. Akilov
Publication year - 2020
Publication title -
vestnik udmurtskogo universiteta. biologiâ, nauki o zemle
Language(s) - English
Resource type - Journals
eISSN - 2413-2489
pISSN - 2412-9518
DOI - 10.35634/2412-9518-2020-30-2-200-206
Subject(s) - precipitation , climatology , environmental science , atmospheric sciences , troposphere , precipitation types , supercooling , spatial distribution , atmospheric circulation , meteorology , geology , geography , remote sensing
The phase state of precipitation is one of the significant climatic indicators in conditions of global warming. The distribution of the temporal frequency of precipitation forms gives an idea of the changes occurring in the environment. This article discusses the spatial and temporal distribution of precipitation, taking into account their morphological classification. A tendency to a decrease in the amount of precipitation falling in solid form has been established. The prevalence of the liquid phase of precipitation over solid in the annual amount by 3 % on average against the background of a greater repeatability of solid precipitation was revealed. Based on cluster analysis, zoning of the territory of the Perm region was carried out according to the prevailing forms of precipitation. Three zones have been distinguished: northeast, center and south. Particular attention is paid to certain types of precipitation: mixed and supercooled, as the most difficult to predict and having complex formation mechanisms. Favorable synoptic situations were determined: a warm sector of a cyclone and a hollow with a warm front. An analysis of the thermal state of the lower troposphere made it possible to establish the thickness of the warm layer (if any), the height of the zero isotherm, and the prevailing surface air temperature.