气候变化领域集成服务门户(CCPortal): The motley drivers of heat and cold exposure in 21st century US cities

CCPortal

DOI	10.1073/pnas.2005492117
	The motley drivers of heat and cold exposure in 21st century US cities
	Broadbent A.M.; Krayenhoff E.S.; Georgescu M.
发表日期	2020
ISSN	0027-8424
起始页码	21108
结束页码	21117
卷号	117 期号:35
英文摘要	We use a suite of decadal-length regional climate simulations to quantify potential changes in population-weighted heat and cold exposure in 47 US metropolitan regions during the 21st century. Our results show that population-weighted exposure to locally defined extreme heat (i.e., "population heat exposure") would increase by a factor of 12.7-29.5 under a high-intensity greenhouse gas (GHG) emissions and urban development pathway. Additionally, end -of-century population cold exposure is projected to rise by a factor of 1.3-2.2, relative to start-of-century population cold exposure. We identify specific metropolitan regions in which population heat exposure would increase most markedly and characterize the relative significance of various drivers responsible for this increase. The largest absolute changes in population heat exposure during the 21st century are projected to occur in major US metropolitan regions like New York City (NY), Los Angeles (CA), Atlanta (GA), and Washington DC. The largest relative changes in population heat exposure (i.e., changes relative to start-of-century) are projected to occur in rapidly growing cities across the US Sunbelt, for example Orlando (FL), Austin (TX), Miami (FL), and Atlanta. The surge in population heat exposure across the Sunbelt is driven by concurrent GHGinduced warming and population growth which, in tandem, could strongly compound population heat exposure. Our simulations provide initial guidance to inform the prioritization of urban climate adaptation measures and policy. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Climate adaptation; Climate change; Cold exposure; Heat exposure; Urban climate
语种	英语
scopus关键词	Article; carbon footprint; climate warming; cold exposure; controlled study; driver; evolutionary adaptation; extreme hot weather; human; meteorology; population growth; population structure; priority journal; public policy; thermal exposure; United States; urban area
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160821
作者单位	Broadbent, A.M., School of Geographical Sciences and Urban Planning, Arizona State University, Tempe, AZ 85281, United States, Urban Climate Research Center, Arizona State University, Tempe, AZ 85281, United States; Krayenhoff, E.S., Urban Climate Research Center, Arizona State University, Tempe, AZ 85281, United States, School of Environmental Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada; Georgescu, M., School of Geographical Sciences and Urban Planning, Arizona State University, Tempe, AZ 85281, United States, Urban Climate Research Center, Arizona State University, Tempe, AZ 85281, United States, Global Institute of Sustainability, Arizona State University, Tempe, AZ 85281, United States
推荐引用方式 GB/T 7714	Broadbent A.M.,Krayenhoff E.S.,Georgescu M.. The motley drivers of heat and cold exposure in 21st century US cities[J],2020,117(35).
APA	Broadbent A.M.,Krayenhoff E.S.,&Georgescu M..(2020).The motley drivers of heat and cold exposure in 21st century US cities.Proceedings of the National Academy of Sciences of the United States of America,117(35).
MLA	Broadbent A.M.,et al."The motley drivers of heat and cold exposure in 21st century US cities".Proceedings of the National Academy of Sciences of the United States of America 117.35(2020).