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DOI	10.1088/1748-9326/ab2740
	Enhanced sensitivity of the urban heat island effect to summer temperatures induced by urban expansion
	Gao Z.; Hou Y.; Chen W.
发表日期	2019
ISSN	17489318
卷号	14 期号:9
英文摘要	A suitable thermal environment is important for the economy, society and public health in urban areas. However, the understanding of the relationship between the urban heat island (UHI) effect and background temperature (T-UHI) is very limited. In this study, the UHI effect induced by the urbanization of the megacity Beijing was investigated using the weather research and forecasting model. Urban expansion and heatwaves both considerably enhanced the UHI effect over urban areas in summer. The strengthened UHI effect during the heatwave period can be clearly explained by the positive sensitivity of T-UHI. The urban expansion increased the sensitivity of T-UHI from 0.0207 C C-1 in 2000 to 0.0569 C C-1 in 2010 in the daytime and from 0.0715 C C-1 in 2000 to 0.0995 C C-1 in 2010 at nighttime, thus resulting in a much stronger UHI effect mainly by increasing the difference between the latent heat flux and sensible heat flux. This enhanced sensitivity may exacerbate the urban heat stress in the situation of further urban expansion and background climate warming. Our results suggest that the sensitivity of T-UHI is a meaningful indicator to assess the urban thermal environment change and support the designing of heat mitigation strategies in urban planning. © 2019 The Author(s). Published by IOP Publishing Ltd.
语种	英语
scopus关键词	Expansion; Heat flux; Public health; Urban planning; Weather forecasting; Background temperature; Enhanced sensitivity; Mitigation strategy; Summer temperature; Thermal environment; Urban Heat Island Effects; Urban thermal environment; Weather research and forecasting models; Atmospheric temperature; heat island; heat wave; latent heat flux; megacity; public health; sensible heat flux; spatiotemporal analysis; summer; urban area; urbanization; Beijing [China]; China
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/154408
作者单位	State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
推荐引用方式 GB/T 7714	Gao Z.,Hou Y.,Chen W.. Enhanced sensitivity of the urban heat island effect to summer temperatures induced by urban expansion[J],2019,14(9).
APA	Gao Z.,Hou Y.,&Chen W..(2019).Enhanced sensitivity of the urban heat island effect to summer temperatures induced by urban expansion.Environmental Research Letters,14(9).
MLA	Gao Z.,et al."Enhanced sensitivity of the urban heat island effect to summer temperatures induced by urban expansion".Environmental Research Letters 14.9(2019).