VARIABILITY OF HYDROMETEOROLOGICAL REGIME OF SEAS OF EAST ARCTIC SECTOR (EAST SIBERIAN, CHUKCHI) IN THE MODERN PERIOD

The relevance of the research. The rich resource base, the large transport and strategic importance of the Arctic Basin and, in particular, the seas of East Arctic, determine the relevance and necessity of researching the hydrometeorological regime variability of the region. The main aim of the work is the analysis of variability of regional indicators of the hydrometeorological regime (wind regime, ice conditions and the nature of water mixing) in the East Siberian and Chukchi Seas over the last several decades (from 1979 to 2015). Object of the research is the complex of the most significant indicators determining the nature of the hydrometeorological conditions of the region. Methods. Methods of multivariate statistics and modeling were used to analyze the hydrometeorological regime variability of the region. Results. On the basis of all available hydrometeorological information the analysis of the variability of regional indicators of the hydrometeorological regime is carried out. The conducted researches indicate the directional changes in the indicators of the hydrometeorological regime of the seas of East Arctic: the nature and intensity of atmospheric circulation over the region (a change of the nature and intensity of the wind regime is noted); in the ice cover of the seas (there is an active decrease of the ice cover); in the nature and intensity of wave activity (at the expense of the first two indicators, intensification of the wave activity expressed in a significant increase in the area and depth of wave mixing is observed). In the future, the obtained estimates can be used to implement a number of probabilistic-statistical models of the hydrometeorological state variability, as well as in solving a number of practical problems, the economic development of areas of the seas of East Arctic.