Extreme heat in June 2012 and 2016 in Western Siberia in the light of long-term change of the macro-scale atmospheric circulation

Автор: Popova V.V.
Сборник: Proc. SPIE
Серия: 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics
Том: 108338
Год издания: 2018
DOI: 10.1117/12.2504610
Аннотация: The temperature anomalies in early summer in Western Siberia, including the extreme heat of 2012 and 2016, are studied in terms of variations in large-scale atmospheric circulation (according to Northern Hemisphere Teleconnection Patterns). Estimates obtained using multiple stepwise regression show that the observed temperature changes from the mid-20th century, including long-term change, inter-annual variation and extremes, can be explained by the anomalies of several circulation modes. Macro-scale atmospheric circulation from the late 1980s - early 1990s can be characterized as a weakening of the westerly circulation, which is naturally accompanied by an increase in the frequency of blocking and temperature anomalies. The extreme manifestation of this мacro-scale circulation was catastrophic heat in Western Siberia in 2012 and 2016.
Добавил в систему: Попова Валерия Васильевна

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