Current Trends in Climate Change in Yakutia
The spatial distribution patterns of climatic changes in Yakutia are considered. For 26 meteorological stations of Yakutia we calculated the linear trend coefficients of climatic characteristics: air temperature (mean annual, January and July temperatures) and the mean annual amount of atmospheric precipitation from 1966 to 2016. Maps of climate change trends were compiled from linear trend coefficients. A spatial analysis of the zonal (regional) peculiarities of the climate of Yakutia has been carried out. An increase in air temperature was established for the 50-year period under consideration. It was found that the annual values of the air temperature trend are positive and, on average, a characteristic trend change interval is 0.3 to 0.6 °C/10 yr. Most of the meteorological stations recorded trends of air temperature with maximum values in winter and minimum values in summer. It was determined that the values of the trends in annual precipitation show different directions, and positive trends occur on more than 70% of the territory of Yakutia. Their maximum corresponds to the mountain-taiga regions of Southern Yakutia. Negative trends in precipitation with values of up to–15 mm/10 yr. are observed in tundra landscapes. The findings show that different regions of Yakutia respond differently to climate change. The trend of an increase in mean annual temperature is largely due to the rise in temperatures during the winter months. The rise in air temperature in Yakutia may be part of global warming. Over the last 50 years there has been an increase in the amount of precipitation in Yakutia as a whole.
Keywordslinear trend coefficient air temperature atmospheric precipitation regions of Yakutia spatial analysis climatic characteristics
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