V.F. Martazinova. INSTABILITY OF DAILY SUMMER AIR TEMPERATURE FROM THE BEGINNING OF THE XXI CENTURY AT KYIV WEATHER STATION

https://doi.org/10.15407/ugz2019.03.015
Ukr. geogr. z. 2019, N3:15-21
Language of publication: 
Ukrainian
Authors: 

V.F. Martazinova - Ukrainian Hydrometeorological Institute, Kyiv.

Abstract: 

Changes in the global climate have led to the fact that the average air temperature of the summer season of 2001-2018 in Ukraine exceeded by 1.5 ° C ± 0.1 ° the average values of 1961-2000. The paper presents the results of a study of the variability of daily air temperature in the summer months, complementing the traditional climatological approaches to assessing the current regional climate. The stability of the temperature regime is concidered using observations of the Kyiv weather station. In most cases, at st. Kyiv, there are sharp changes in air temperature occurring in most of Ukraine. These changes are formed by the meridional processes of large-scale atmospheric circulation. The revealed instability of the temperature regime of 2001-2018, defined as a change in temperature from day to day with an amplitude of more than 6 ° C, was accompanied by complicated daily air temperature of the summer month from the beginning of the 21st century was calculated using the criterion for the similarity of time series. Current features of the average daily air temperature are characterized by a metheorological conditions during each summer month. As a result, the frequency of a sharp change in air temperature from ± 6 ° C in one day increased two to three times in June and August. The most probable course of the decrease in air temperature in the first ten days of June, in the middle of July and in the third ten days of August at 3-4 ° C below normal, while on other days the temperature is at 3-4 ° C higher than normal, and on some days it is at 5-6 ° C higher.

Key words: 
atmospheric circulation, air temperature, climate, summer season
Pages: 
15-21
References: 

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