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Category: Июль 2020

Changes in Seasonal Air Temperature Extremes in Moscow and the Central Regions of European Russia

M. Yu. Bardin and T. V. Platova

For Moscow and the territory including some regions in the center of European Russia, changes in the following indices characterizing temperature extremes are analyzed: the seasonal num- ber of days with temperature above the 90th percentile and below the 10th percentile, the seasonal dura- tion of heat waves and cold waves, and the magnitude of the largest anomalies in a season (5th and 95th percentiles of average daily temperatures of the season). The long-period changes accompanying the modern warming are analyzed, as well as their features related to the decadal oscillations in the Atlan- tic-European circulation systems. In view of this, as well as of the issue of formation conditions for sig- nificant seasonal anomalies, the connection between the indices of extremes and the circulation indices is considered and described. To assess the impact of the Moscow heat island on the extreme temperature statistics, the estimates are obtained for Moscow and for the station of Mozhaisk located close to Moscow but out of the heat island impact area.