气候变化领域集成服务门户(CCPortal): Impacts of short-Term mitigation measures on PM2.5 and radiative effects: A case study at a regional background site near Beijing; China

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DOI	10.5194/acp-19-1881-2019
	Impacts of short-Term mitigation measures on PM2.5 and radiative effects: A case study at a regional background site near Beijing; China
	Wang Q.; Liu S.; Li N.; Dai W.; Wu Y.; Tian J.; Zhou Y.; Wang M.; Sai Hang Ho S.; Chen Y.; Zhang R.; Zhao S.; Zhu C.; Han Y.; Tie X.; Cao J.
发表日期	2019
ISSN	16807316
起始页码	1881
结束页码	1899
卷号	19 期号:3
英文摘要	Measurements at a background site near Beijing showed that pollution controls implemented during the 19th National Congress of the Communist Party of China (NCCPC) were effective in reducing PM 2:5 . Mass concentrations of PM 2:5 and its major chemical components were 20.6%-43.1% lower during the NCCPC-control period compared with a non-control period, and differences were greater on days with stable meteorological conditions. A receptor model showed that PM 2:5 from traffic-related emissions, biomass burning, industrial processes, and mineral dust was 38.5 %-77.8% lower during the NCCPC-control versus noncontrol period, but differences in PM 2:5 from coal burning were small, and secondary sources were higher during the NCCPC-control period. During one pollution episode in the non-control period, secondary sources dominated, and the WRF-Chem model showed that the Beijing-Tianjin-Hebei (BTH) region contributed 73.6% of PM 2:5 mass. A second pollution episode was linked to biomass burning, and BTH contributed 46.9% of PM 2:5 mass. Calculations based on Interagency Monitoring of Protected Visual Environments (IMPROVE) algorithms showed that organic matter was the largest contributor to light extinction during the non-control period whereas NH 4 NO 3 was the main contributor during the NCCPC. The Tropospheric Ultraviolet and Visible radiation model showed that the average direct radiative forcing (DRF) values at the Earth's surface were-14:0 and-19:3Wm -2 during the NCCPC-control and non-control periods, respectively, and the DRF for the individual PM 2:5 components were 22.7 %-46.7% lower during the NCCPC. The information and dataset from this study will be useful for developing air pollution control strategies in the BTH region and for understanding associated aerosol radiative effects. © Author(s) 2019.
语种	英语
scopus关键词	atmospheric pollution; biomass burning; concentration (composition); particulate matter; pollution control; radiative forcing; traffic emission; Beijing [China]; China; Hebei; Tianjin
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144648
作者单位	Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Xi'an, 710061, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, 710061, China; School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'An Jiaotong University, Xi'an, 710049, China; Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; School of Human Settlements and Civil Engineering, Xi'An Jiaotong University, Xi'an, 710049, China; Institute of Global Environmental Change, Xi'An Jiaotong University, Xi'an, 710049, China
推荐引用方式 GB/T 7714	Wang Q.,Liu S.,Li N.,et al. Impacts of short-Term mitigation measures on PM2.5 and radiative effects: A case study at a regional background site near Beijing; China[J],2019,19(3).
APA	Wang Q..,Liu S..,Li N..,Dai W..,Wu Y..,...&Cao J..(2019).Impacts of short-Term mitigation measures on PM2.5 and radiative effects: A case study at a regional background site near Beijing; China.Atmospheric Chemistry and Physics,19(3).
MLA	Wang Q.,et al."Impacts of short-Term mitigation measures on PM2.5 and radiative effects: A case study at a regional background site near Beijing; China".Atmospheric Chemistry and Physics 19.3(2019).