气候变化领域集成服务门户(CCPortal): Nonlinear increases in extreme temperatures paradoxically dampen increases in extreme humid-heat

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DOI	10.1088/1748-9326/ab28b7
	Nonlinear increases in extreme temperatures paradoxically dampen increases in extreme humid-heat
	Coffel E.D.; Horton R.M.; Winter J.M.; Mankin J.S.
发表日期	2019
ISSN	17489318
卷号	14 期号:8
英文摘要	Nonlinear increases in warm season temperatures are projected for many regions, a phenomenon we show to be associated with relative surface drying. However, negative human health impacts are physiologically linked to combinations of high temperatures and high humidity. Since the amplified warming and drying are concurrent, the net effect on humid-heat, as measured by the wet bulb temperature (T W), is uncertain. We demonstrate that globally, on the hottest days of the year, the positive effect of amplified warming on T W is counterbalanced by a larger negative effect resulting from drying. As a result, the largest increases in T W and T x do not occur on the same days. Compared to a world with linear temperature change, the drying associated with nonlinear warming dampens mid-latitude T W increases by up to 0.5 C, and also dampens the rise in frequency of dangerous humid-heat (T W > 27 C) by up to 5 d per year in parts of North America and Europe. Our results highlight the opposing interactions among temperature and humidity changes and their effects on T W, and point to the importance of constraining uncertainty in hydrological and warm season humidity changes to best position the management of future humid-heat risks. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	climate change; extreme heat; humidity; land-atmosphere coupling
语种	英语
scopus关键词	Atmospheric humidity; Drying; Extreme temperatures; High temperature; Human health impacts; Humidity change; Land-atmosphere couplings; Linear temperature; Temperature and humidities; Wet bulb temperature; Climate change; air-soil interaction; climate change; extreme event; health impact; high temperature; public health; relative humidity; temperature effect
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154483
作者单位	Neukom Institute, Dartmouth College, United States; Department of Geography, Dartmouth College, United States; Department of Earth Sciences, Dartmouth College, United States; Lamont-Doherty Earth Observatory, Columbia University, United States
推荐引用方式 GB/T 7714	Coffel E.D.,Horton R.M.,Winter J.M.,et al. Nonlinear increases in extreme temperatures paradoxically dampen increases in extreme humid-heat[J],2019,14(8).
APA	Coffel E.D.,Horton R.M.,Winter J.M.,&Mankin J.S..(2019).Nonlinear increases in extreme temperatures paradoxically dampen increases in extreme humid-heat.Environmental Research Letters,14(8).
MLA	Coffel E.D.,et al."Nonlinear increases in extreme temperatures paradoxically dampen increases in extreme humid-heat".Environmental Research Letters 14.8(2019).