气候变化领域集成服务门户(CCPortal): Amplified Rossby waves enhance risk of concurrent heatwaves in major breadbasket regions

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DOI	10.1038/s41558-019-0637-z
	Amplified Rossby waves enhance risk of concurrent heatwaves in major breadbasket regions
	Kornhuber K.; Coumou D.; Vogel E.; Lesk C.; Donges J.F.; Lehmann J.; Horton R.M.
发表日期	2020
ISSN	1758678X
卷号	10 期号:1
英文摘要	In an interconnected world, simultaneous extreme weather events in distant regions could potentially impose high-end risks for societies1,2. In the mid-latitudes, circumglobal Rossby waves are associated with a strongly meandering jet stream and might cause simultaneous heatwaves and floods across the northern hemisphere3–6. For example, in the summer of 2018, several heat and rainfall extremes occurred near-simultaneously7. Here we show that Rossby waves with wavenumbers 5 and 7 have a preferred phase position and constitute recurrent atmospheric circulation patterns in summer. Those patterns can induce simultaneous heat extremes in specific regions: Central North America, Eastern Europe and Eastern Asia for wave 5, and Western Central North America, Western Europe and Western Asia for wave 7. The probability of simultaneous heat extremes in these regions increases by a factor of up to 20 for the most severe heat events when either of these two waves dominate the circulation. Two or more weeks per summer spent in the wave-5 or wave-7 regime are associated with 4% reductions in crop production when averaged across the affected regions, with regional decreases of up to 11%. As these regions are important for global food production, the identified teleconnections have the potential to fuel multiple harvest failures, posing risks to global food security8. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/124265
作者单位	Earth Institute, Columbia University, New York, NY, United States; Atmospheric, Oceanic and Planetary Physics, University of Oxford, Oxford, United Kingdom; National Centre for Atmospheric Science, Leeds, United Kingdom; Institute for Environmental Studies, VU University Amsterdam, Amsterdam, Netherlands; Earth System Analysis, Potsdam Institute for Climate Impact Research, Member of the Leibniz Association, Potsdam, Germany; Australian-German Climate & Energy College, The University of Melbourne, Melbourne, VIC, Australia; Columbia University, Lamont Doherty Earth Observatory, Palisades, NY, United States; Stockholm Resilience Centre, Stockholm University, Stockholm, Sweden
推荐引用方式 GB/T 7714	Kornhuber K.,Coumou D.,Vogel E.,et al. Amplified Rossby waves enhance risk of concurrent heatwaves in major breadbasket regions[J],2020,10(1).
APA	Kornhuber K..,Coumou D..,Vogel E..,Lesk C..,Donges J.F..,...&Horton R.M..(2020).Amplified Rossby waves enhance risk of concurrent heatwaves in major breadbasket regions.Nature Climate Change,10(1).
MLA	Kornhuber K.,et al."Amplified Rossby waves enhance risk of concurrent heatwaves in major breadbasket regions".Nature Climate Change 10.1(2020).