ИСТИНА

Recent summer warming over the Russia territory and consequences for environment are studied using of monthly air temperature and precipitation and various climatic indices calculated basing on daily records of air temperature and precipitation at 526 stations in Russia from the Russian Institute of Hydrometeorological Information (RIHMI). Data on water- energy balance components obtained by Geography Department of Moscow State Univercity during 3-years field observation in the Northern Caucuses and meteorological records and Northern Hemisphere Teleconnection Pattrens time-series from NOAA were analyzed as well. Summer air temperature averaged over North Eurasia territory exhibits significant trend of 0.4ºC per 10 years providing a 45% input in total variability. The latter makes it different from winter warming characterized by 11% input in total variability. Continuous growth during last decades contrasting to winter temperature may be recognized as essential peculiarity of the summer temperature. Patterns of temperature and precipitation changes over the territory of Russia for various periods demonstrate significant increase of the temperature anomaly occurrence and decrease of precipitation (for East European plain) from the beginning of 2000-s. Heat and drought events on July 2010 in East European plain and on June 2012 in West Siberia seem to be extreme manifestation of summer warming in North Eurasia and cause significant risks for environment, economy and human life. Particularly, it touches upon the hazard fires brought huge losses on July 2010 in East European plain. Nevertheless, fire danger index (Nesterov index) estimates obtained for the Baikal region show decrease of the fire risks related with meteorological conditions. Evaluations obtained for the glacier Marukh using mass-balance model exhibit the crucial impact of the increased summer air temperatures on 500-600 m glacier degradation. According to analysis of 3-year observations and measuring on the Dgankuat glacier, the major portion of water- energy balance belongs to solar radiation. For July and August 2010 its value is estimated as the anomaly high.