The modern nature of changes in the average monthly air temperature during 2006-2020

Abstract

The proposed article is devoted to the study and analysis of changes in the field of average monthly air temperature on the territory of Ukraine over the past fifteen years (2006-2020) of the period 1991-2020 to determine the trends that have emerged as a result of changes in global circulation over the Atlantic-European sector of the Northern Hemisphere and the possible occurrence of frequent drought events on the territory of Ukraine. Тaking into account the drastic climate changes that have occurred during the last decades, there is a problem in adapting a number of branches of the production complex to such changes in order to prevent economic losses and develop a new strategy in this direction. Connection with research tasks. The presented study is related to the implementation of a number of state-ordered research works dedicated to the study of the peculiarities of modern climate changes in Ukraine and the identification of climate-vulnerable areas on its territory. Problems to be solved in the article. Taking into account the accumulated material regarding the features of the distribution of the air temperature field in Ukraine and the probabilistic scenarios for its change under the influence of general warming in the Northern Hemisphere, for the territory of Ukraine it is necessary to find out the mechanism of its current changes and determine their direction on a temporal and territorial scale. The main purpose of the presented article was to investigate and establish the main trends in the current field of average monthly air temperature in Ukraine over the past 15 years (2006-2020) and show the nature of the spatial and temporal distribution of these changes. Materials and methods. The data of the average monthly air temperature at 55 stations of Ukraine during all months of the year for the fifteen-year periods 1991-2005 and 2006-2020 served as the research materials. The main research methods were physical and statistical to determine the deviations of two 15-year periods and cartographic to determine spatio-temporal differentiation of detected cells. Main results. It was established that on the territory of Ukraine in January 2006-2020 there was a certain decrease in the average monthly air temperature due to lower temperatures. In the rest of the winter months, its growth is observed, especially in the territory of the northwestern, northern, and northeastern regions and in some central and southern regions.. In the spring, the increase in the average monthly air temperature in 2006-2020 occurred more intensively in the northern regions and in a number of regions of the western region (Peredkarpattia). In the summer, the increase in air temperature was observed throughout the territory of Ukraine, but most intensively in July. Territorially, the greatest increase in the average monthly air temperature was expressed in the north, northeast and south. In autumn, the increase in the average monthly air temperature was most intense in November 2006-2020 in the regions of the northern and central regions, as well as in the Carpathian region. In the last 15 years, the average monthly air temperature in Ukraine has increased, but in January it decreased in the north, northeast, in some places in the center and south. This trend is new for today's climate. The results of the study for the territory of Ukraine are presented for the first time and can be used for planning agricultural works.