气候变化领域集成服务门户(CCPortal): PM2.5 Pollution Modulates Wintertime Urban Heat Island Intensity in the Beijing-Tianjin-Hebei Megalopolis; China

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DOI	10.1029/2019GL084288
	PM2.5 Pollution Modulates Wintertime Urban Heat Island Intensity in the Beijing-Tianjin-Hebei Megalopolis; China
	Yang Y.; Zheng Z.; Yim S.Y.L.; Roth M.; Ren G.; Gao Z.; Wang T.; Li Q.; Shi C.; Ning G.; Li Y.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:1
英文摘要	Heavy PM2.5 (particulate matter with aerodynamic diameter equal to or less than 2.5 μm) pollution and urban heat island (UHI) pose increasing threats to human health and living environment in populated cities. However, how PM2.5 pollution affects the UHI intensity (UHII) has not been fully understood. The impacts of PM2.5 on the wintertime UHII in the Beijing-Tianjin-Hebei megalopolis of China are explored during 2013–2017. The results show that the UHII at the time of daily maximum/minimum temperature (UHIImax/UHIImin) exhibits a decreasing/increasing tendency as PM2.5 concentration increases, causing a continuous decrease in the diurnal temperature range. These effects are mediated via aerosol-radiation interaction (aerosol-cloud interaction) under clear-sky (cloudy) condition. The changes in PM2.5 concentration further cause different relative trends of UHIImax/UHIImin/diurnal temperature range across different cities in the Beijing-Tianjin-Hebei region, which are likely related to the differences in both the PM2.5 composition and city size. This study provides insights on how air pollution affects urban climate and would help to design effective mitigation strategies. © 2019. The Authors.
英文关键词	Aerosols; Health risks; Radiation effects; Thermal pollution; Aerosol-cloud interaction; Aerosol-radiation interactions; PM2.5; Tianjin; Urban heat island intensities; Atmospheric temperature; atmospheric pollution; concentration (composition); heat island; particulate matter; urban climate; volcanic cloud; Arcadia [Peloponnisos]; China; Greece; Megalopolis; Peloponnisos
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170884
作者单位	School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing, China; Institute of Urban Meteorology, China Meteorological Administration, Beijing, China; Institute of Environment, Energy and Sustainability, The Chinese University of Hong Kong, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China; Department of Geography and Resource Management, The Chinese University of Hong Kong, China; Stanley Ho Big Data Decision Analytics Research Centre, The Chinese University of Hong Kong, China; Department of Geography, National University of Singapore, Singapore; Department of Atmospheric Science, School of Environmental Studies, China University of Geosciences, Wuhan, China; Laboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing, China; School of Atmospheric Sciences, Nanjing University, Nanjing, China; School of Atmospheric Sciences, Sun Yat-Sen Univ...
推荐引用方式 GB/T 7714	Yang Y.,Zheng Z.,Yim S.Y.L.,et al. PM2.5 Pollution Modulates Wintertime Urban Heat Island Intensity in the Beijing-Tianjin-Hebei Megalopolis; China[J],2020,47(1).
APA	Yang Y..,Zheng Z..,Yim S.Y.L..,Roth M..,Ren G..,...&Li Y..(2020).PM2.5 Pollution Modulates Wintertime Urban Heat Island Intensity in the Beijing-Tianjin-Hebei Megalopolis; China.Geophysical Research Letters,47(1).
MLA	Yang Y.,et al."PM2.5 Pollution Modulates Wintertime Urban Heat Island Intensity in the Beijing-Tianjin-Hebei Megalopolis; China".Geophysical Research Letters 47.1(2020).