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Drivers behind the summer 2010 wave train leading to Russian heatwave and Pakistan flooding.
- Source :
- NPJ Climate & Atmospheric Science; 11/4/2021, Vol. 4 Issue 1, p1-14, 14p
- Publication Year :
- 2021
-
Abstract
- Summer 2010 saw two simultaneous extremes linked by an atmospheric wave train: a record-breaking heatwave in Russia and severe floods in Pakistan. Here, we study this wave event using a large ensemble climate model experiment. First, we show that the circulation in 2010 reflected a recurrent wave train connecting the heatwave and flooding events. Second, we show that the occurrence of the wave train is favored by three drivers: (1) 2010 sea surface temperature anomalies increase the probability of this wave train by a factor 2-to-4 relative to the model's climatology, (2) early-summer soil moisture deficit in Russia not only increases the probability of local heatwaves, but also enhances rainfall extremes over Pakistan by forcing an atmospheric wave response, and (3) high-latitude land warming favors wave-train occurrence and therefore rainfall and heat extremes. These findings highlight the complexity and synergistic interactions between different drivers, reconciling some seemingly contradictory results from previous studies. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 23973722
- Volume :
- 4
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- NPJ Climate & Atmospheric Science
- Publication Type :
- Academic Journal
- Accession number :
- 153415415
- Full Text :
- https://doi.org/10.1038/s41612-021-00211-9