ЗИМНИЕ ВОЛНЫ ХОЛОДА НА ТЕРРИТОРИИ РОССИИ СО ВТОРОЙ ПОЛОВИНЫ ХХ ВЕКА, "Известия Российской академии наук. Серия географическая"

Abstract

The changes in the quantity, intensity and duration of cold waves in Russia in winter (December– February) for different periods from 1961 to 2010 were estimated. To determine the cold waves, the threshold values corresponding to 5 percentiles of the minimum daily temperature distribution are considered. It is established that in the winter period since 1990s on the most part of the territory of Russia there was a decrease in the number of cold waves and an increase in minimum temperatures. It was found that since 1990s in winter most of Russia’s territory was experienced a decrease in cold waves and an increase in minimum temperatures. But at the beginning of the 21st century these tendencies are weakening, and in the south of Western and Eastern Siberia a vast area appears where an increase in cold waves and a decrease in the minimum temperature are observed. Analysis of cold waves with temperatures below –30 °C showed the disappearance in the beginning of the 21st century the area with absolutely unfavorable climatic conditions in north of Yakutia, the improvement of the conditions up to favorable practically in the entire European territory of Russia and in south of the Far East.