ИСТИНА

Using analysis of everyday weather maps and atmospheric sounding data in the Arctic the synoptic mechanisms of temperature anomalies formation during winter 2011-2012 in the Western Arctic were considered. Obtained typical schemes of macroscale atmospheric circulation adjustment shows how it led on the one hand to intensive advection of warm air from Atlantic to the central part of the Arctic basin and on the other hand to eastern flow formation from Siberia to south parts of Russia and to the Mediterranean countries. Analysis of SST and surface temperature maps showed that positive anomalies of SST in the north of Barents Sea during January-February 2012 reached 5-6 degrees Celsius and anomalies of surface temperature up to 15-20 degrees Celsius. All these indicates a shift of the North Atlantic current (which is an extension of the Gulf Stream) from the Scandinavian coast to the north.