气候变化领域集成服务门户(CCPortal): Impacts of regional transport and boundary layer structure on the PM2.5 pollution in Wuhan, Central China

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DOI	10.1016/j.atmosenv.2020.117508
	Impacts of regional transport and boundary layer structure on the PM2.5 pollution in Wuhan, Central China
	Xiao Z.; Miao Y.; Du X.; Tang W.; Yu Y.; Zhang X.; Che H.
发表日期	2020
ISSN	1352-2310
卷号	230
英文摘要	Wuhan, one of the most developed cities in Central China, has been experiencing frequent heavy haze pollution. To understand the impacts of large-scale synoptic patterns and the local-scale planetary boundary layer (PBL) structures on the PM2.5 pollution in Wuhan, this study applied an objective approach to the classifying of the daily synoptic patterns in 2017. It then combined observational analyses and meteorology-chemistry coupled simulations to investigate a typical pollution episode at the end of November 2017. The synoptic type associated with the heaviest PM2.5 pollution in Wuhan was characterized by high pressure to the northwest and low pressure to the northeast at the 850-hPa level, which can support northwesterly prevailing winds towards Wuhan. As a result, the aerosols from the highly polluted northern regions can be transported to Wuhan, leading to a high PM2.5 concentration. Also, when there was high pressure located to the east/southeast of Wuhan at the 850-hPa level, southerly warm advections could be induced. The warming of upper air can significantly suppress the development of PBL by enhancing thermal stability, favoring the accumulation of aerosols. This study elucidated the multi-scale physical mechanisms underlying the aerosol pollution in Wuhan, and has important implications for the forecasting and the mitigating of pollution. © 2020 Elsevier Ltd
关键词	Aerosol pollution Planetary boundary layer Regional transport Thermal inversion
语种	英语
scopus关键词	Aerosols; Boundary layers; Chemical analysis; Boundary layer structure; Coupled simulation; Objective approaches; Observational analysis; Planetary boundary layers; PM2.5 concentration; Pollution episodes; Regional transport; Air pollution; aerosol; air quality; atmospheric pollution; boundary layer; concentration (composition); haze; particulate matter; pollutant transport; advection; aerosol; article; boundary layer; China; forecasting; hypobarism; meteorology; simulation; thermostability; warming; China; Hubei; Wuhan
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/249180
作者单位	State Key Laboratory of Severe Weather & Key Laboratory of Atmospheric Chemistry of CMA, Chinese Academy of Meteorological Sciences, Beijing, 100081, China; School of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing, 210044, China; Research Institute of Atmospheric Environment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; College of Water Sciences, Beijing Normal University, Beijing, 100875, China
推荐引用方式 GB/T 7714	Xiao Z.,Miao Y.,Du X.,et al. Impacts of regional transport and boundary layer structure on the PM2.5 pollution in Wuhan, Central China[J],2020,230.
APA	Xiao Z..,Miao Y..,Du X..,Tang W..,Yu Y..,...&Che H..(2020).Impacts of regional transport and boundary layer structure on the PM2.5 pollution in Wuhan, Central China.ATMOSPHERIC ENVIRONMENT,230.
MLA	Xiao Z.,et al."Impacts of regional transport and boundary layer structure on the PM2.5 pollution in Wuhan, Central China".ATMOSPHERIC ENVIRONMENT 230(2020).