期刊
GEOPHYSICAL RESEARCH LETTERS
卷 43, 期 6, 页码 2819-2826出版社
AMER GEOPHYSICAL UNION
DOI: 10.1002/2016GL068036
关键词
event attribution; Russia 2010; soil moisture
资金
- EUCLEIA project - European Union [607085]
The severe 2010 heat wave in western Russia was found to be influenced by anthropogenic climate change. Additionally, soil moisture-temperature feedbacks were deemed important for the buildup of the exceptionally high temperatures. We quantify the relative role of both factors by applying the probabilistic event attribution framework and analyze ensemble simulations to distinguish the effect of climate change and the 2010 soil moisture conditions for annual maximum temperatures. The dry 2010 soil moisture alone has increased the risk of a severe heat wave in western Russia sixfold, while climate change from 1960 to 2000 has approximately tripled it. The combined effect of climate change and 2010 soil moisture yields a 13 times higher heat wave risk. We conclude that internal climate variability causing the dry 2010 soil moisture conditions formed a necessary basis for the extreme heat wave.
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