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DOI	10.1016/j.atmosres.2020.105134
	Interaction between heat wave and urban heat island: A case study in a tropical coastal city; Singapore
	Chew L.W.; Liu X.; Li X.-X.; Norford L.K.
发表日期	2021
ISSN	0169-8095
卷号	247
英文摘要	Heat waves are unusually high temperature events over consecutive days and may cause adverse impacts such as morbidity and mortality. The interaction between heat waves and urban heat island (UHI) effects has remained a subject of debate, as some studies prove heat wave-UHI synergy while others do not. Furthermore, heat waves affect tropical cities more severely than mid-latitude cities, but there is a disproportionate lack of heat wave studies focusing on tropical cities. We attempt to narrow this gap by studying the heat wave in Singapore in April 2016 using ground observations and the Weather Research and Forecasting (WRF) model. Compared to non-heat wave days, the ground observations show that daytime temperatures can be 3 °C higher during the heat wave. Despite the temperature spike, the UHI intensity is not amplified during the heat wave, maintaining its peak near 2.5 °C during both heat wave and non-heat wave periods. WRF simulation results also agree well with measurements and predict UHI peaks near 2.5 °C during both periods, showing no heat wave-UHI synergy. The spatially averaged UHI intensity also shows no such synergy. There is no significant change of wind speed, soil moisture availability or heat storage flux during the heat wave. Therefore, the lack of heat wave-UHI synergy in our study is consistent with current understanding of factors contributing to UHI. This study shows that the heat wave-UHI interaction in a tropical city can be different from that in cities in the temperate climate zone and more studies should be conducted in tropical cities, which are projected to suffer larger impacts of increasing heat stress. © 2020 Elsevier B.V.
英文关键词	Extreme temperature; Ground observations; Heat wave-UHI synergy; Tropics; WRF
语种	英语
scopus关键词	Atmospheric temperature; Heat storage; Soil moisture; Tropics; Weather forecasting; Wind; Coastal cities; Ground observations; High temperature events; Midlatitudes; Soil moisture availability; Temperate climate; Urban heat island; Weather research and forecasting models; Climatology; heat flux; heat island; heat wave; high temperature; soil moisture; temperate environment; tropical environment; weather forecasting; wind velocity; Singapore [Singapore (NTN)]; Singapore [Southeast Asia]
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/141769
作者单位	Center for Environmental Sensing and Modeling, Singapore-MIT Alliance for Research and Technology, Singapore; Institute of High Performance Computing, Agency for Science, Technology and Research, Singapore; School of Atmospheric Sciences, Sun Yat-sen University, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), China; Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University, China; Department of Architecture, Massachusetts Institute of Technology, United States
推荐引用方式 GB/T 7714	Chew L.W.,Liu X.,Li X.-X.,et al. Interaction between heat wave and urban heat island: A case study in a tropical coastal city; Singapore[J],2021,247.
APA	Chew L.W.,Liu X.,Li X.-X.,&Norford L.K..(2021).Interaction between heat wave and urban heat island: A case study in a tropical coastal city; Singapore.Atmospheric Research,247.
MLA	Chew L.W.,et al."Interaction between heat wave and urban heat island: A case study in a tropical coastal city; Singapore".Atmospheric Research 247(2021).