气候变化领域集成服务门户(CCPortal): Assessing present and future coastal moderation of extreme heat in the Eastern United States

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DOI	10.1088/1748-9326/ab495d
	Assessing present and future coastal moderation of extreme heat in the Eastern United States
	Raymond C.; Mankin J.S.
发表日期	2019
ISSN	17489318
卷号	14 期号:11
英文摘要	Climate models suggest a rapid increase of extremely hot days in coming decades. Cool marine air currently ventilates extreme heat in populous coastal regions, diminishing its impacts, but how well climate models capture this effect is uncertain. Here we conduct a comprehensive observational analysis of coastal extreme-heat ventilation-its length scale, magnitude, and regional patterns- A nd evaluate two ensembles of downscaled global climate models along the eastern US coast. We find that coastal areas are 2 °C-4 °C cooler than ∼60 km inland, resulting in reductions near 50% in population exposure to temperatures above 35 °C. Large seasonal and inter-regional variations are closely linked with land-sea temperature contrasts. High-resolution models underestimate coastal cooling by 50%-75%, implying that substantial and spatiotemporally varying model bias correction is necessary to create accurate projections of coastal extreme heat, which is expected to rise considerably with anthropogenic forcing. Our results underline the importance of regionally- A nd observationally-based perspectives for assessing future extreme heat and its impacts, and for positioning effective heat-risk management for communities and jurisdictions that span coast-to-inland areas. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	climate change; coastal impacts; downscaled projections; extreme heat; high resolution
语种	英语
scopus关键词	Climate change; Coastal zones; Risk assessment; Risk management; Anthropogenic forcing; coastal impacts; downscaled projections; Global climate model; High resolution; High-resolution models; Observational analysis; Population exposure; Climate models; accuracy assessment; assessment method; climate modeling; coastal zone; extreme event; global climate; temperature effect; United States
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/154756
作者单位	Department of Earth and Environmental Sciences, Columbia University, New York, NY, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Department of Geography, Department of Earth Sciences, Dartmouth College, Hanover, NH, United States; Division of Ocean and Climate Physics, Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States
推荐引用方式 GB/T 7714	Raymond C.,Mankin J.S.. Assessing present and future coastal moderation of extreme heat in the Eastern United States[J],2019,14(11).
APA	Raymond C.,&Mankin J.S..(2019).Assessing present and future coastal moderation of extreme heat in the Eastern United States.Environmental Research Letters,14(11).
MLA	Raymond C.,et al."Assessing present and future coastal moderation of extreme heat in the Eastern United States".Environmental Research Letters 14.11(2019).