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

V. V. Popova

doi:10.1117/12.2504610

13 December 2018 Extreme heat in June 2012 and 2016 in Western Siberia in the light of long-term change of the macro-scale atmospheric circulation

V. V. Popova

Author Affiliations +

Proceedings Volume 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 108338N (2018) https://doi.org/10.1117/12.2504610
Event: XXIV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2018, Tomsk, Russian Federation

Abstract

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.

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V. V. Popova "Extreme heat in June 2012 and 2016 in Western Siberia in the light of long-term change of the macro-scale atmospheric circulation", Proc. SPIE 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 108338N (13 December 2018); https://doi.org/10.1117/12.2504610

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