UDC

551.583

Authors

M.V. Ushakov*
*North-East Interdisciplinary Scientific Research Institute named after N.A. Shilo, Far Eastern Branch of the Russian Academy of Sciences (Magadan, Russian Federation)
Corresponding author: Mikhail Ushakov, address: Portovaya str., 16, Magadan, 685000, Russian Federation; е-mail: mvilorich@narod.ru

Abstract

The cold climate of Magadan region, situated in the North-East of Russia, has a negative impact on the socio-economic development of the region. The region is characterized by heavy working and living conditions, great difficulties of farming, limited duration of marine and river shipping seasons, high cost of space heating and industrial equipment. The work objective was the analysis of changes of climatic characteristics in Magadan region in the cold season: the duration of the winter season (the season with the average daily temperature of below 0 °C) and the heating season duration (the period with the average daily air temperature of below 8 °C), Siple and Passel wind chill index in January which took into account not only the air temperature, but also the wind speed. We used the observational data of the air temperature and wind speed in four locations with different climate types: sharply continental and maritime. The annual duration of heating and winter periods of 1951–2010 years were calculated. By the obtained series the 30-year moving averages were calculated, which were called “conventional standards”. The annual value of the Siple and Passel index have been calculated since 1961, from the period of the wind speed data obtaining. Therefore, the series of the conventional standards of the index started from 1990. The duration of the winter and heating seasons decreased by 5–8 days, the value of the January Siple and Passel index declined markedly, and the weather conditions for outdoor work and leisure softened. The formulas to calculate the conventional standards of the considered climatic characteristics under different variants of the mean annual air temperature in the 21st century were obtained. Modern climate change during the cold season should be a positive impact on the overall development of Magadan Region.

Keywords

climate change, heating season, winter season, Siple and Passel wind chill index

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