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Impacts of short-term mitigation measures on PM2.5 and radiative effects: a case study at a regional background site near Beijing, China
Wang, QY (Wang, Qiyuan)1,2; Liu, SX (Liu, Suixin)1; Li, N (Li, Nan)3; Dai, WT (Dai, Wenting)1; Wu, YF (Wu, Yunfei)4; Tian, J (Tian, Jie)5; Zhou, YQ (Zhou, Yaqing)1; Wang, M (Wang, Meng)1; Ho, H (Ho, Hang Sai Steven)1; Chen, Y (Chen, Yang)6; Zhang, RJ (Zhang, Renjian)4; Zhao, SY (Zhao, Shuyu)1; Zhu, CS (Zhu, Chongshu)1; Han, YM (Han, Yongming)1,2,7; Tie, XX (Tie, Xuexi)1; Cao, JJ (Cao, Junji)1,2,8
2019-02-12
Source PublicationATMOSPHERIC CHEMISTRY AND PHYSICS
Volume19Issue:3Pages:1881-1899
Contribution Rank1
AbstractMeasurements at a background site near Beijing showed that pollution controls implemented during the 19th National Congress of the Communist Party of China (NC-CPC) were effective in reducing PM2.5. Mass concentrations of PM2.5 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 PM2.5 from traffic-related emissions, biomass burning, industrial processes, and mineral dust was 38.5%-77.8% lower during the NCCPC-control versus non-control period, but differences in PM2.5 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 PM2.5 mass. A second pollution episode was linked to biomass burning, and BTH contributed 46.9% of PM2.5 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 NH4NO3 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 -19.3 W m(-2) during the NCCPC-control and non-control periods, respectively, and the DRF for the individual PM2.5 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.
Indexed BySCI ; SCIE
Language英语
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10952
Collection粉尘与环境研究室
Corresponding AuthorWang, QY (Wang, Qiyuan)
Affiliation1.Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China
2.CAS Center for Excellence in Quaternary Science and Global Change, Xi’an, 710061, China
3.School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China
4.Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China
5.Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, China
6.Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
7.School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an, 710049, China
8.Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, 710049, China
Recommended Citation
GB/T 7714
Wang, QY ,Liu, SX ,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]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(3):1881-1899.
APA Wang, QY .,Liu, SX .,Li, N .,Dai, WT .,Wu, YF .,...&Cao, JJ .(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),1881-1899.
MLA Wang, QY ,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):1881-1899.
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