气候变化领域集成服务门户(CCPortal): Evapotranspiration frequently increases during droughts

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DOI	10.1038/s41558-022-01505-3
	Evapotranspiration frequently increases during droughts
	Zhao, Meng; Geruo, A.; Liu, Yanlan; Konings, Alexandra G.
发表日期	2022
ISSN	1758-678X
EISSN	1758-6798
起始页码	1024
结束页码	+
卷号	12 期号:11 页码:23
英文摘要	Changes in evapotranspiration (ET) affect water availability and ecosystem health. Higher evaporative demand during drought acts to increase ET, but droughts also reduce the moisture supply necessary for ET, limiting predictions of even the sign of ET anomalies. Drought-driven increases in ET (ETdrought+) are of particular concern because they quickly deplete water resources, causing flash droughts and acute stress on ecosystems. Here, using a water balance approach, we show that ETdrought+ is globally widespread, occurring in 44.4% of drought months. The sign of ET's drought response depends most on the magnitude of precipitation and total water storage anomalies, rather than its location. The Coupled Model Intercomparison Project Phase 6 Earth system models underestimate the ETdrought+ probability by nearly one-half, and more so in drier regions, primarily due to missing representations of soil structure effects on soil evaporation, as well as incorrectly parameterized plant and soil traits. These processes should be prioritized to reduce model uncertainties in the waterenergy-food nexus.
学科领域	Environmental Sciences; Environmental Studies; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000876031500006
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/274105
作者单位	Stanford University; University of California System; University of California Irvine; University System of Ohio; Ohio State University
推荐引用方式 GB/T 7714	Zhao, Meng,Geruo, A.,Liu, Yanlan,et al. Evapotranspiration frequently increases during droughts[J],2022,12(11):23.
APA	Zhao, Meng,Geruo, A.,Liu, Yanlan,&Konings, Alexandra G..(2022).Evapotranspiration frequently increases during droughts.NATURE CLIMATE CHANGE,12(11),23.
MLA	Zhao, Meng,et al."Evapotranspiration frequently increases during droughts".NATURE CLIMATE CHANGE 12.11(2022):23.