干旱区生态环境知识资源中心(Arid): Transport Pathways and Potential Source Regions of PM2.5 on the West Coast of Bohai Bay during 2009-2018

Arid

DOI	10.3390/atmos10060345
	Transport Pathways and Potential Source Regions of PM2.5 on the West Coast of Bohai Bay during 2009-2018
	Hao, Tianyi 1; Cai, Ziying 2; Chen, Shucheng 3; Han, Suqin 1; Yao, Qing 1; Fan, Wenyan 2
通讯作者	Han, Suqin
来源期刊	ATMOSPHERE
ISSN	2073-4433
出版年	2019
卷号	10 期号:6
英文摘要	Mass concentration data for particulate matter with an aerodynamic diameter less than or equal to 2.50 mu m (PM2.5) combined with backward trajectory cluster analysis, potential source contribution function (PSCF), and concentration weighted trajectory (CWT) methods were used to investigate the transport pathways and potential source regions of PM2.5 on the west coast of Bohai Bay from 2009 to 2018. Two pathways responsible for the transportation of high PM2.5 levels were identified, namely a southerly pathway and a northwesterly pathway. The southerly pathway represented the major transport pathway of PM2.5 for all seasons. As a regional transport pathway, it had the greatest impact in winter, followed by autumn. The southerly transport pathway passed over the Shandong and Hebei provinces before reaching Tianjin: Air masses were transported within the boundary layer (below 925 hPa), representing a slow-moving air flow. The northwesterly pathway mostly occurred in winter and autumn and passed over desert and semidesert regions in Outer Mongolia, the sand lands of Inner Mongolia, and Hebei. The air masses associated with the northwesterly pathway represented fast-moving airflows responsible for long-range transportation of PM2.5. Two potential source regions that contributed to high PM2.5 loadings on the west coast of Bohai Bay were identified, southerly source regions and northwesterly source regions. The southerly source regions, with weighted CWT (WCWT) values in winter greater than 140.00 mu g/m(3), were anthropogenic source regions, including southern Hebei, western Shandong, eastern Henan, northern Anhui, and northern Jiangsu. The northwesterly source regions, with WCWT values in winter of 80.00-140.00 mu g/m(3), were natural source regions, encompassing central Inner Mongolia and southern Mongolia. In addition, the southerly transport pathway passed though anthropogenic source regions, while the northwesterly transport pathway passed though natural source regions. The impacts of anthropogenic source regions on PM2.5 loadings on the west coast of Bohai Bay were greater than those of natural source regions.
英文关键词	backward trajectory transport pathway potential source region PM2.5 west coast of Bohai Bay
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000473749900054
WOS关键词	LONG-RANGE TRANSPORT ; PARTICULATE AIR-POLLUTION ; CHEMICAL-CHARACTERIZATION ; SOURCE APPORTIONMENT ; ATMOSPHERIC AEROSOL ; CHINA ; PM10 ; IDENTIFICATION ; PRECIPITATION ; RESOLUTION
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214449
作者单位	1.Tianjin Environm Meteorol Ctr, Dept Environm Meteorol Assessment, 100 Qi Xiang Tai Rd, Tianjin 300074, Peoples R China; 2.Tianjin Environm Meteorol Ctr, Dept Environm Meteorol Forecast, 100 Qi Xiang Tai Rd, Tianjin 300074, Peoples R China; 3.Tianjin Meteorol Observat Ctr, Dept Tech Support, 62 Friendship Rd, Tianjin 300061, Peoples R China
推荐引用方式 GB/T 7714	Hao, Tianyi,Cai, Ziying,Chen, Shucheng,et al. Transport Pathways and Potential Source Regions of PM2.5 on the West Coast of Bohai Bay during 2009-2018[J],2019,10(6).
APA	Hao, Tianyi,Cai, Ziying,Chen, Shucheng,Han, Suqin,Yao, Qing,&Fan, Wenyan.(2019).Transport Pathways and Potential Source Regions of PM2.5 on the West Coast of Bohai Bay during 2009-2018.ATMOSPHERE,10(6).
MLA	Hao, Tianyi,et al."Transport Pathways and Potential Source Regions of PM2.5 on the West Coast of Bohai Bay during 2009-2018".ATMOSPHERE 10.6(2019).