Geology, geography and global energy
Scientific and Technical Journal
CHANGES IN CLIMATIC TEMPERATURE CONDITIONS IN THE VOLGA RIVER DELTA
2020. №4, pp. 155-163
Valov Mikhail V. - Astrakhan State University, m.v.valov@mail.ru
Kolotukhin Aleksandr Yu. - Astrakhan State University, marsarini@gmail.com
Barmin Aleksandr N. - Astrakhan State University, abarmin60@mail.ru
Tatarintsev Sergey A. - Astrakhan State University, m.v.valov@mail.ru
Kolchin Evgeniy A. - Astrakhan State University, m.v.valov@mail.ru
Temperature trends are important component of climate changes and define evaporation discharge from soil and water surface in arid conditions of Peri-Caspian lowland, as well define alkali soil water seepage processes, highly soluble salt accumulation in surface soil, that is negatively affected on plant cover and agricultural plant and consequently on the region socialeconomic state. The purpose of the work is to defining according to the actual multiyear statistical data of 1922-2019 accurate annual and seasonal temperature regime changes in the Volga delta. Statistical analysis with the use of selection research method was carried out on the basis of temperature indices for specified period. Analysis of average values, intervals, skewness, dispersion, standard deviation, excess, linear trend building were carried out during the work; also variations of average air temperatures, average temperatures dynamics according to the months and seasons were analyzed. Two great periods from 1922 till the mid of 1990 were defined according to the conducted analysis results in air temperature dynamics of investigated territory, which is characterized by high temperature variability in cold months and their temperature increase as a whole, by the low variability in warm months and lack of trend on their change, also general trend on temperatures variability decrease during the year and the period from 1990 till the present time, which is characterized by insignificant temperatures variability in cold months, trend continuation on their increase, trend formation on temperatures increase in warm months and their variability intensification, also standard temperatures deviation intensification during the year.
Key words: climate change, global warming, air temperature, the Volga delta, temperature trends
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