干旱区生态环境知识资源中心(Arid): Identification of Long-Range Transport Pathways and Potential Source Regions of PM2.5 and PM10 at Akedala Station, Central Asia

Arid

DOI	10.3390/atmos11111183
	Identification of Long-Range Transport Pathways and Potential Source Regions of PM2.5 and PM10 at Akedala Station, Central Asia
	Li, Hanlin; He, Qing; Liu, Xinchun
通讯作者	He, Q ; Liu, XC
来源期刊	ATMOSPHERE
EISSN	2073-4433
出版年	2020
卷号	11 期号:11
英文摘要	Cluster analyses, potential source contribution function (PSCF) and concentration-weight trajectory (CWT) were used to identify the main transport pathways and potential source regions with hourly PM2.5 and PM10 concentrations in different seasons from January 2017 to December 2019 at Akedala Station, located in northwest China (Central Asia). The annual mean concentrations of PM2.5 and PM10 were 11.63 +/- 9.31 and 19.99 +/- 14.39 mu g/m(3), respectively. The air pollution was most polluted in winter, and the dominant part of PM10 (between 54 to 76%) constituted PM2.5 aerosols in Akedala. Particulate pollution in Akedala can be traced back to eastern Kazakhstan, northern Xinjiang, and western Mongolia. The cluster analyses showed that the Akedala atmosphere was mainly affected by air masses transported from the northwest. The PM2.5 and PM10 mainly came with air masses from the central and eastern regions of Kazakhstan, which are characterized by highly industrialized and semi-arid desert areas. In addition, the analyses of the pressure profile of back-trajectories showed that air mass distribution were mainly distributed above 840 hPa. This indicates that PM2.5 and PM10 concentrations were strongly affected by high altitude air masses. According to the results of the PSCF and CWT methods, the main potential source areas of PM2.5 were very similar to those of PM10. In winter and autumn, the main potential source areas with high weighted PSCF values were located in the eastern regions of Kazakhstan, northern Xinjiang, and western Mongolia. These areas contributed the highest PM2.5 concentrations from 25 to 40 mu g/m(3) and PM10 concentrations from 30 to 60 mu g/m(3) in these seasons. In spring and summer, the potential source areas with the high weighted PSCF values were distributed in eastern Kazakhstan, northern Xinjiang, the border between northeast Kazakhstan, and southern Russia. These areas contributed the highest PM2.5 concentrations from 10 to 20 mu g/m(3) and PM10 concentrations from 20 to 60 mu g/m(3) in these seasons.
英文关键词	transport pathway potential source region PM2.5 PM10 Central Asia
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000592862500001
WOS关键词	BACKWARD TRAJECTORIES ; AIR-POLLUTION ; PARTICULATE MATTER ; HYSPLIT MODEL ; DUST ; POLLUTANTS ; QUALITY ; STATISTICS ; PARTICLES ; EPISODES
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/2XILL650/327667
作者单位	[Li, Hanlin; He, Qing; Liu, Xinchun] China Meteorol Adm, Inst Desert Meteorol, Urumqi 830002, Peoples R China
推荐引用方式 GB/T 7714	Li, Hanlin,He, Qing,Liu, Xinchun. Identification of Long-Range Transport Pathways and Potential Source Regions of PM2.5 and PM10 at Akedala Station, Central Asia[J],2020,11(11).
APA	Li, Hanlin,He, Qing,&Liu, Xinchun.(2020).Identification of Long-Range Transport Pathways and Potential Source Regions of PM2.5 and PM10 at Akedala Station, Central Asia.ATMOSPHERE,11(11).
MLA	Li, Hanlin,et al."Identification of Long-Range Transport Pathways and Potential Source Regions of PM2.5 and PM10 at Akedala Station, Central Asia".ATMOSPHERE 11.11(2020).