气候变化领域集成服务门户(CCPortal): Effect of irrigation on humid heat extremes

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DOI	10.1088/1748-9326/ab9ecf
	Effect of irrigation on humid heat extremes
	Krakauer N.Y.; Cook B.I.; Puma M.J.
发表日期	2020
ISSN	17489318
卷号	15 期号:9
英文摘要	Most studies of irrigation as an anthropogenic climate forcing focus on its cooling effects. However, irrigation also increases humidity, and so may not ameliorate humid heat and its extremes. We analyzed global climate model results over hot locations and seasons at high temporal resolution to estimate the impact of irrigation on humid heat extremes, quantified as different percentiles of wet-bulb temperature (Tw), under contemporary conditions. We found that although irrigation reduced temperature, the median and higher percentiles of Tw on average did not decrease. Increases in Tw percentile values and increases in frequency of dangerous Tw of several days per year due to irrigation were found in some densely populated regions, including the central United States and the Middle East, while the Ganges basin saw reduced Tw. Changes in Tw were partly associated with the differential regional impacts of irrigation on moisture transport. These results underline the importance of considering impacts of climate forcings on humidity as well as temperature in evaluating associated effects on heat extremes. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	climate change; heat; humidity; irrigation
语种	英语
scopus关键词	Climate models; Anthropogenic climate; Climate forcings; Densely populated regions; Global climate model; High temporal resolution; Moisture transport; Regional impacts; Wet bulb temperature; Irrigation; extreme event; heating; high temperature; humid tropics; irrigation system; latent heat flux; sensible heat flux; surface temperature
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/153748
作者单位	Department of Civil Engineering, NOAA CREST, City College of New York, New York, NY 10031, United States; NASA Goddard Institute for Space Studies, New York, 10025, United States; Lamont-Doherty Earth Observatory, Ocean and Climate Physics, Palisades, NY 10964, United States; Center for Climate Systems Research, Columbia University, New York, 10025, United States
推荐引用方式 GB/T 7714	Krakauer N.Y.,Cook B.I.,Puma M.J.. Effect of irrigation on humid heat extremes[J],2020,15(9).
APA	Krakauer N.Y.,Cook B.I.,&Puma M.J..(2020).Effect of irrigation on humid heat extremes.Environmental Research Letters,15(9).
MLA	Krakauer N.Y.,et al."Effect of irrigation on humid heat extremes".Environmental Research Letters 15.9(2020).