Long-term changes of climatic factors and water regime in the zone of impact of the south-ukrainian energy complex

Abstract

In the article long-term changes of climatic factors and water regime in the zone of impact of the SouthUkrainian Energy Complex (SUEC) are analyzed. The length of the series consisting of the average annual, maximum and minimum average year of water consumption until 2017 from Pervomaisk water (under SUEC) post and Oleksandrivka water post (below SUEC) are used. The main meteorological characteristics from
Pervomaisk and Voznesensk meteorological stations, because they are situated close to the zone of impact of the SUEC (under and below), were taken.
The length of the series for meteorological characteristics of the entire period of monitoring since 1886, for the data comparison and correlation, were carried out.
Last several decades as in the whole territory of Ukraine and in the zone of impact of SUEC the significant warming processes are observed. Due to general increasing of precipitation amount in cold period of the year and in general the annual amount of precipitation, the tendency for a significant decrease of precipitation amount in July-August was observed. Such decreasing is accompanied by the significant increase of the air temperature at 5 ± 2 °C. In the flow of the river the rich-water period, which began in the late 60's of the last century, has changed to water-poor cycle since the 2007. Seasonal redistribution of river flow from this territory became less expressed during the year. The drainage significantly decreased in the spring period, and increased in summer, autumn and winter periods.