气候变化领域集成服务门户(CCPortal): Characteristics of surface energy balance and atmospheric circulation during hot-And-polluted episodes and their synergistic relationships with urban heat islands over the Pearl River Delta region

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DOI	10.5194/acp-21-13443-2021
	Characteristics of surface energy balance and atmospheric circulation during hot-And-polluted episodes and their synergistic relationships with urban heat islands over the Pearl River Delta region
	Nduka I.C.; Tam C.-Y.; Guo J.; Yim S.H.L.
发表日期	2021
ISSN	1680-7316
起始页码	13443
结束页码	13454
卷号	21 期号:17
英文摘要	This study analyzed the nature, mechanisms and drivers for hot-And-polluted episodes (HPEs) in the Pearl River Delta, China. Numerical model simulations were conducted for the summer and autumn of 2009-2011. A total of eight HPEs were identified, mainly occurring in August and September. K-means clustering was applied to group the HPEs into three clusters based on their characteristics and mechanisms. We found three HPEs were driven by weak subsidence and convection induced by approaching tropical cyclones (TC-HPE) and two HPEs were controlled by calm (stagnant) conditions (ST-HPE) with low wind speed in the lower atmosphere, whereas the remaining three HPEs were driven by the combination (hybrid) of both aforementioned systems (HY-HPE). A positive synergistic effect between the HPE and urban heat island (UHI; g 1/4g 1.1g g C increase) was observed in TC-HPE and ST-HPE, whereas no discernible synergistic effect was found in HY-HPE. Total aerosol radiative forcing (TARF) caused a reduction in temperature (0.5-1.0g g C) in TC-HPE and ST-HPE but an increase (0.5g g C) in HY-HPE. © Copyright:
语种	英语
scopus关键词	atmospheric circulation; atmospheric pollution; autumn; computer simulation; energy balance; heat island; numerical model; summer; surface energy; China; Guangdong; Zhujiang Delta
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246590
作者单位	Department of Geography and Resource Management, Chinese University of Hong Kong, Sha Tin, Hong Kong; Earth System Science Programme, Chinese University of Hong Kong, Sha Tin, Hong Kong; State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, 100081, China; Stanley Ho Big Data Decision Analytics Research Centre, Chinese University of Hong Kong, Sha Tin, Hong Kong; Asian School of the Environment, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
推荐引用方式 GB/T 7714	Nduka I.C.,Tam C.-Y.,Guo J.,et al. Characteristics of surface energy balance and atmospheric circulation during hot-And-polluted episodes and their synergistic relationships with urban heat islands over the Pearl River Delta region[J],2021,21(17).
APA	Nduka I.C.,Tam C.-Y.,Guo J.,&Yim S.H.L..(2021).Characteristics of surface energy balance and atmospheric circulation during hot-And-polluted episodes and their synergistic relationships with urban heat islands over the Pearl River Delta region.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(17).
MLA	Nduka I.C.,et al."Characteristics of surface energy balance and atmospheric circulation during hot-And-polluted episodes and their synergistic relationships with urban heat islands over the Pearl River Delta region".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.17(2021).