PYASETSKA S.I. SPACE-TIME DISTRIBUTION OF MASS DEPOSITS OF WET SNOW IN THE TERRITORY OF UKRAINE DURING 1991-2020. BY CERTAIN DECADES
DOI: https://doi.org/10.17721/2306-5680.2024.1.9
Hydrology, Hydrochemistry and Hydroecology. 2024. № 1 (71)
Publication language: Ukrainian
Authors:
Pyasetska S.I., Boris Sreznevskyi Central Geophysical Observatory of the State Emergency Service of Ukraine, Kyiv
The presented article is dedicated to the study of the spatio-temporal distribution of mass deposits of wet snow on the territory of Ukraine during certain decades of the period 1991-2020. The case of mass distribution of wet snow deposits is considered to be the case when such deposits were observed in 1 day at at least 10 stations located on territories of at least 2 regions. Each of the three ten-year periods was analyzed, taking into account all the studied months regarding the features of the distribution of mass deposits of wet snow separately, and the features of the distribution of such cases on the territory of Ukraine were clarified.
For the first decade of 1991-2000, it was established that for the winter months and at the end of autumn, such deposits, in cases of their mass distribution, are mostly observed in the territory of the northern and northeastern regions (Kyiv, Chernihiv, Sumy, Kharkiv), as well as in the central regions ( Cherkasy, Kirovohrad, Poltava, Dnipropetrovsk). In the south, at this time, they are mostly observed in Odesa, Kherson and Autonomous Republic of Crimea. In March, they are mostly found in the northeast (Kharkiv region), the center (Poltav region, Cherkasy region) and the south (Zaporizhia, Kherson region, Autonomous Republic of Crimea). In April, such deposits with their massive distribution are mostly observed in Volyn and Zhytomyr Oblast. In 2001-2010, with an increase in the number of cases of mass spreading of wet snow deposits, their territorial distribution underwent changes. In winter and at the end of autumn, Kyiv region joins the regions of the northeast where increased recurrence is observed. Among the central regions, Cherkasy and Kirovohrad regions also had the highest recurrence rate. In March and April, such deposits are mostly observed in the north, northeast (Kyiv Oblast, Chernihiv Oblast, Sumy Oblast, Kharkiv Oblast), the center (mostly Cherkasy Oblast), as well as in the south (Zaporizhia, Autonomous Republic of Crimea). In April, the frequency of such cases increases in Odesa and Crimea. In 2011-2020, during the cold period of the year, the situation is similar to the previous decade. In March, the frequency of such deposits increased in Khmelnytskyi and Poltava regions.
Key words: the territory of Ukraine; wet snow deposits; spatio-temporal distribution of wet snow deposits when they are massively distributed.
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HOW TO CITE
Pyasetska, S.I. (2024). Space-time distribution of mass deposits of wet snow in the territory of Ukraine during 1991-2020. by certain decades. Hidrolohiia, hidrokhimiia i hidroekolohiia [Hydrology, Hydrochemistry and Hydroecology], 1(71), 96-113. (in Ukrainian, abstr. in English). https://doi.org/10.17721/2306-5680.2024.1.9