干旱区生态环境知识资源中心(Arid): Persistent pollution episodes, transport pathways, and potential sources of air pollution during the heating season of 2016-2017 in Lanzhou, China

Arid

DOI	10.1007/s10661-021-09597-8
	Persistent pollution episodes, transport pathways, and potential sources of air pollution during the heating season of 2016-2017 in Lanzhou, China
	Guo, Yongtao; Lin, Chunying; Li, Jiangping; Wei, Lingbo; Ma, Yuxia; Yang, Qidong; Li, Dandan; Wang, Hang; Shen, Jiahui
通讯作者	Guo, YT (corresponding author), Lanzhou Univ, Coll Atmospher Sci, Lanzhou 730000, Peoples R China.
来源期刊	ENVIRONMENTAL MONITORING AND ASSESSMENT
ISSN	0167-6369
EISSN	1573-2959
出版年	2021
卷号	193 期号:12
英文摘要	As one of the most important industrial cities in Northwest China, Lanzhou currently suffers from serious air pollution. This study analyzed the formation mechanism and potential source areas of persistent air pollution in Lanzhou during the heating period from November 1, 2016 to March 31, 2017 based on the air pollutant concentrations and relevant meteorological data. Our findings indicate that particulate pollution was extremely severe during the study period. The daily PM2.5 and PM10 concentrations had significantly negative correlations with daily temperature, wind speed, maximum daily boundary layer height, while the daily PM2.5 and PM10 concentrations showed significantly positive correlations with daily relative humidity. Five persistent pollution episodes were identified and classified as either stagnant accumulation or explosive growth types according to the mechanism of pollution formation and evolution. The PM2.5 and PM10 concentrations and PM2.5/PM10 ratio followed a growing saw-tooth cycle pattern during the stagnant accumulation type event. Dust storms caused abrupt peaks in PM10 and a sharp decrease in the PM2.5/PM10 ratio in explosive growth type events. The potential sources of PM10 were mainly distributed in the Kumtag Desert in Xinjiang Uygur Autonomous Region, the Qaidam Basin and Hehuang Valley in Qinghai Province, and the western and eastern Hexi Corridor in Gansu Province. The contributions to PM10 were more than 120 mu g/m(3). The important potential sources of PM2.5 were located in Hehuang Valley in Qinghai and Linxia Hui Autonomous Prefecture in Gansu; the concentrations of PM2.5 were more than 60 mu g/m(3).
英文关键词	Air pollution Persistent pollution Backward trajectory Potential source contribution function Concentration weighted trajectory
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000724090300001
WOS关键词	YANGTZE-RIVER DELTA ; SOURCE APPORTIONMENT ; PARTICULATE MATTER ; WINTER HAZE ; METEOROLOGICAL CONDITIONS ; TEMPORAL VARIATIONS ; ATMOSPHERIC MERCURY ; FORMATION MECHANISM ; RECEPTOR MODELS ; NORTHERN CHINA
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374053
作者单位	[Guo, Yongtao; Li, Jiangping; Wei, Lingbo; Ma, Yuxia; Wang, Hang; Shen, Jiahui] Lanzhou Univ, Coll Atmospher Sci, Lanzhou 730000, Peoples R China; [Lin, Chunying] Qinghai Prov Weather Modificat Off, Xining 810001, Peoples R China; [Yang, Qidong] Yunnan Univ, Dept Atmosphere Sci, Sch Earth Sci, Kunming 650500, Yunnan, Peoples R China; [Li, Dandan] Gansu Prov Environm Monitoring Ctr, Lanzhou 730020, Peoples R China
推荐引用方式 GB/T 7714	Guo, Yongtao,Lin, Chunying,Li, Jiangping,et al. Persistent pollution episodes, transport pathways, and potential sources of air pollution during the heating season of 2016-2017 in Lanzhou, China[J],2021,193(12).
APA	Guo, Yongtao.,Lin, Chunying.,Li, Jiangping.,Wei, Lingbo.,Ma, Yuxia.,...&Shen, Jiahui.(2021).Persistent pollution episodes, transport pathways, and potential sources of air pollution during the heating season of 2016-2017 in Lanzhou, China.ENVIRONMENTAL MONITORING AND ASSESSMENT,193(12).
MLA	Guo, Yongtao,et al."Persistent pollution episodes, transport pathways, and potential sources of air pollution during the heating season of 2016-2017 in Lanzhou, China".ENVIRONMENTAL MONITORING AND ASSESSMENT 193.12(2021).