气候变化领域集成服务门户(CCPortal): Spatiotemporal variations of air pollutants in western China and their relationship to meteorological factors and emission sources

CCPortal

DOI	10.1016/j.envpol.2019.07.120
	Spatiotemporal variations of air pollutants in western China and their relationship to meteorological factors and emission sources
	Yang, Junhua; Ji, Zhenming; Kang, Shichang; Zhang, Qianggong; Chen, Xintong; Lee, Shao-Yi
发表日期	2019
ISSN	0269-7491
EISSN	1873-6424
卷号	254
英文摘要	We have carried out a comprehensive analysis of six air pollutants (particles with an aerodynamic diameter less than 2.5 mu m (PM2.5) and less than 10 mu m (PM10), carbon monoxide (CO), sulfur dioxide (SO2), nitrogen dioxide (NO2), and ozone (O-3)) in western China, including the spatiotemporal characteristics of air pollutants, their relationship with meteorological factors and emission sources, and the efficiency of emission control strategies for the region. Based hourly observations at 23 sites in western China from June 2016 to May 2017, concentrations of most pollutants were higher outside the Tibetan Plateau, lowest in summer and highest in winter, the exception being O-3. This was partially because meteorological conditions in winter were found to the most unfavorable to pollutant dispersion and dilution than other seasons. Pollutant concentrations at most sites were correlated with the residential emissions which were higher in winter, but anti-correlated with the industrial emissions which were lower during the winter holiday period. The Weather Research and Forecasting with Chemistry (WRF-Chem) simulations of four pollution control strategies indicated that reduction of residential emissions is crucial to alleviate PM2.5, PM10, and CO pollution in western China, although reduction of industrial and transport emissions can reduce SO2 and NO2, respectively. Since PM2.5 and PM10 were also found to be the species most and next frequently responsible for extremely serious pollution in western China, respectively, we recommend pollution control regulations that target residential emissions. (C) 2019 Elsevier Ltd. All rights reserved.
关键词	Air pollutants Spatiotemporal variations Major pollutant Impact factors Western China
学科领域	Environmental Sciences & Ecology
语种	英语
WOS研究方向	Environmental Sciences
来源期刊	ENVIRONMENTAL POLLUTION
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/112014
作者单位	Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Yang, Junhua,Ji, Zhenming,Kang, Shichang,et al. Spatiotemporal variations of air pollutants in western China and their relationship to meteorological factors and emission sources[J]. 中国科学院西北生态环境资源研究院,2019,254.
APA	Yang, Junhua,Ji, Zhenming,Kang, Shichang,Zhang, Qianggong,Chen, Xintong,&Lee, Shao-Yi.(2019).Spatiotemporal variations of air pollutants in western China and their relationship to meteorological factors and emission sources.ENVIRONMENTAL POLLUTION,254.
MLA	Yang, Junhua,et al."Spatiotemporal variations of air pollutants in western China and their relationship to meteorological factors and emission sources".ENVIRONMENTAL POLLUTION 254(2019).