气候变化领域集成服务门户(CCPortal): Global long-term mapping of surface temperature shows intensified intra-city urban heat island extremes

CCPortal

DOI	10.1016/j.gloenvcha.2021.102441
	Global long-term mapping of surface temperature shows intensified intra-city urban heat island extremes
	Mentaschi L.; Duveiller G.; Zulian G.; Corbane C.; Pesaresi M.; Maes J.; Stocchino A.; Feyen L.
发表日期	2022
ISSN	0959-3780
卷号	72
英文摘要	Surface temperatures are generally higher in cities than in rural surroundings. This phenomenon, known as Surface Urban Heat Island (SUHI), increases the risk of heat-related human illnesses and mortality. Past global studies analysed this phenomenon aggregated at city scale or over seasonal and annual time periods, while human impacts strongly depend on shorter term heat stress experienced locally. Here we develop a global long-term high-resolution dataset of daytime SUHI, offering an insight into the space–time variability of the urban–rural temperature differences which is unprecedented at global scale. Our results show that across urban areas worldwide over the period 2003–2020, 3-day SUHI extremes are on average more than twice as high as the warm-season median SUHI, with local exceedances up to 10 K. Over this period, SUHI extremes have increased more rapidly than warm-season medians, and averaged worldwide are now 1.04 K or 31% higher compared to 2003. This can be linked with increasing urbanisation, more frequent heatwaves, and greening of the earth, processes that are all expected to continue in the coming decades. Within many cities there are hotspots where extreme SUHI intensity is 10–15 K higher compared to relatively cooler city parts. Given the limited human adaptability to heat stress, our results advocate for mitigation strategies targeted at reducing SUHI extremes in the most vulnerable and exposed city neighbourhoods. © 2021
关键词	Extremes Global scale High space–time resolution Long-term SUHI Trends Urban Heat Island
语种	英语
scopus关键词	extreme event; global perspective; heat island; long-term change; mapping method; mitigation; neighborhood; surface temperature
来源期刊	Global Environmental Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/249529
作者单位	Department of Physics and Astronomy “Augusto Righi” (DIFA), University of Bologna, Bologna, 40127, Italy; oint Research Centre (JRC), European Commission, Ispra, Italy; Max Planck Institute for Biogeochemistry, Jena, Germany; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, Hong Kong
推荐引用方式 GB/T 7714	Mentaschi L.,Duveiller G.,Zulian G.,et al. Global long-term mapping of surface temperature shows intensified intra-city urban heat island extremes[J],2022,72.
APA	Mentaschi L..,Duveiller G..,Zulian G..,Corbane C..,Pesaresi M..,...&Feyen L..(2022).Global long-term mapping of surface temperature shows intensified intra-city urban heat island extremes.Global Environmental Change,72.
MLA	Mentaschi L.,et al."Global long-term mapping of surface temperature shows intensified intra-city urban heat island extremes".Global Environmental Change 72(2022).