Tendencies of climatic changes for thermal condition of the Laptev Sea in the last 37 years
Air and sea surface temperature (SST) year-to-year variability in recent conditions of climatic warming was studied for the Laptev Sea on the data of regular observations on meteorological stations in 1981-2017 and NOAA_OI_SST_V2 reanalysis data. Space-temporal structure of temperature field was analyzed using the methods of Empirical Orthogonal Functions (EOF), cluster analysis and correlation analysis. Mean climatic trends are estimated for the air temperature as +0.75 °C/decade and for SST as +0.35 °С/decade (for hot season). Cause-and-effect relationships of these changes with variations of the wind field components and climatic indexes are established. Quantitative assessment of current trends and regional features of the year-to-year variability of thermal conditions in the Laptev Sea in comparison with the adjacent areas of the Eastern Arctic are specified.