气候变化领域集成服务门户(CCPortal): Quantifying the physical processes leading to atmospheric hot extremes at a global scale

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DOI	10.1038/s41561-023-01126-1
	Quantifying the physical processes leading to atmospheric hot extremes at a global scale
	Roethlisberger, Matthias; Papritz, Lukas
发表日期	2023
ISSN	1752-0894
EISSN	1752-0908
起始页码	210
结束页码	+
卷号	16 期号:3 页码:18
英文摘要	Heat waves are among the deadliest climate hazards. Yet the relative importance of the physical processes causing their near-surface temperature anomalies (T ')-advection of air from climatologically warmer regions, adiabatic warming in subsiding air and diabatic heating-is still a matter of debate. Here we quantify the importance of these processes by evaluating the T ' budget along air-parcel backward trajectories. We first show that the extreme near-surface T ' during the June 2021 heat wave in western North America was produced primarily by diabatic heating and, to a smaller extent, by adiabatic warming. Systematically decomposing T ' during the hottest days of each year (TX1day events) in 1979-2020 globally, we find strong geographical variations with a dominance of advection over mid-latitude oceans, adiabatic warming near mountain ranges and diabatic heating over tropical and subtropical land masses. In many regions, however, TX1day events arise from a combination of these processes. In the global mean, TX1day anomalies form along trajectories over roughly 60 h and 1,000 km, although with large regional variability. This study thus reveals inherently non-local and regionally distinct formation pathways of hot extremes, quantifies the crucial factors determining their magnitude and enables new quantitative ways of climate model evaluation regarding hot extremes.
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000935752800001
来源期刊	NATURE GEOSCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272621
作者单位	Swiss Federal Institutes of Technology Domain; ETH Zurich
推荐引用方式 GB/T 7714	Roethlisberger, Matthias,Papritz, Lukas. Quantifying the physical processes leading to atmospheric hot extremes at a global scale[J],2023,16(3):18.
APA	Roethlisberger, Matthias,&Papritz, Lukas.(2023).Quantifying the physical processes leading to atmospheric hot extremes at a global scale.NATURE GEOSCIENCE,16(3),18.
MLA	Roethlisberger, Matthias,et al."Quantifying the physical processes leading to atmospheric hot extremes at a global scale".NATURE GEOSCIENCE 16.3(2023):18.