气候变化领域集成服务门户(CCPortal): Regional transport patterns for heavy PM2.5 pollution driven by strong cold airflows in Twain-Hu Basin, Central China

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DOI	10.1016/j.atmosenv.2021.118847
	Regional transport patterns for heavy PM2.5 pollution driven by strong cold airflows in Twain-Hu Basin, Central China
	Shen L.; Zhao T.; Liu J.; Wang H.; Bai Y.; Kong S.; Shu Z.
发表日期	2022
ISSN	1352-2310
卷号	269
英文摘要	Passages of strong cold airflow can quickly purge air pollutants over source region, e.g. North China Plain (NCP), while regional transport of air pollutants from source region would exacerbate air quality in the receptor region of Twain-Hu Basin (THB), due to the cold airflows modulated by atmospheric circulations over China. In this study, nine heavy pollution events (HPEs) in THB, Central China during the winters of 2015–2019 were identified for investigating the regional transport patterns of air pollutants from Central and Eastern China (CEC) to THB driven by strong cold airflows. Once regional transport of air pollutants from the CEC source regions was triggered by strong northerlies, PM2.5 pollution parcels then converged in the downwind THB receptor region through a dominant dynamic mechanism for most HPEs (66.7%) with downward airflow, which generally resulted in long durations of high PM2.5 concentrations and the impacted areas were modulated by synoptic patterns over the CEC. Non-dominant transport patterns were also observed with a cyclonic circulation of high wind speeds or a local stagnation of cold air over the THB, contributing to the highest and shortest PM2.5 peak or small impacted areas limited to the northern THB, respectively. It was estimated that the regional transport of PM2.5 from non-local regions accounted for 51.0%–85.7% of PM2.5 concentrations during the HPEs at Wuhan, revealing the dominance of regional transport of air pollutants from CEC to the THB with the meteorological drivers. © 2021
关键词	FLEXPART-WRF Meteorological conditions PM2.5 Regional transport Twain-Hu Basin
语种	英语
scopus关键词	Atmospheric movements; Air pollutants; Central chinas; Cold airflow; Eastern China; FLEXPART; FLEXPART-WRF; Meteorological condition; PM 2.5; Regional transport; Twain-hu basin; Air quality; air quality; airflow; atmospheric pollution; cold air; particulate matter; pollutant transport; synoptic meteorology; airflow; article; China; cold air; cold stress; human; meteorology; particulate matter 2.5; wind speed; winter; China; Hubei; North China Plain; Taiwan; 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/248125
作者单位	Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory for Aerosol-Cloud-Precipitation of the China Meteorological Administration, PREMIC, Nanjing University of Information Science & Technology, Nanjing, 210044, China; Department of Geography and Planning, University of Toronto, Toronto, Ontario, M5S3G3, Canada; Institute of Heavy Rain, China Meteorological Administration, Wuhan, 430205, China; Department of Atmospheric Sciences, School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan, 430074, China
推荐引用方式 GB/T 7714	Shen L.,Zhao T.,Liu J.,et al. Regional transport patterns for heavy PM2.5 pollution driven by strong cold airflows in Twain-Hu Basin, Central China[J],2022,269.
APA	Shen L..,Zhao T..,Liu J..,Wang H..,Bai Y..,...&Shu Z..(2022).Regional transport patterns for heavy PM2.5 pollution driven by strong cold airflows in Twain-Hu Basin, Central China.ATMOSPHERIC ENVIRONMENT,269.
MLA	Shen L.,et al."Regional transport patterns for heavy PM2.5 pollution driven by strong cold airflows in Twain-Hu Basin, Central China".ATMOSPHERIC ENVIRONMENT 269(2022).