globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2016JD024865
论文题名:
Radiocarbon-derived source apportionment of fine carbonaceous aerosols before, during, and after the 2014 Asia-Pacific Economic Cooperation (APEC) summit in Beijing, China
作者: Liu J.; Mo Y.; Li J.; Liu D.; Shen C.; Ding P.; Jiang H.; Cheng Z.; Zhang X.; Tian C.; Chen Y.; Zhang G.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2016
卷: 121, 期:8
起始页码: 4177
结束页码: 4187
语种: 英语
英文关键词: APEC summit ; elemental carbon ; organic carbon ; radiocarbon
英文摘要: The Asia-Pacific Economic Cooperation (APEC) summit took place in Beijing, China, 5-11 November 2014, during which numerous measures were performed to control the air pollution, and consequently, the sky of Beijing was so clean that the public called it "APEC blue." The concentrations before, during, and after the APEC summit are 14.4 ± 6.81 μg C/m3, 6.66 ± 2.99 μg C/m3, and 32.3 ± 10.6 μg C/m3, respectively, for organic carbon (OC), and 2.27 ± 1.17 μg C/m3, 0.76 ± 0.52 μg C/m3, and 4.99 ± 1.74 μg C/m3, respectively, for elemental carbon (EC). We quantify the contributions of fossil and nonfossil sources to the OC and EC using radiocarbon. Results show that the contribution of nonfossil sources is 56 ± 1% (before APEC), 61 ± 1% (during APEC), and 48 ± 1% (after APEC), respectively, for OC, and 36 ± 4% (before APEC), 46 ± 1% (during APEC), and 33 ± 4% (after APEC), respectively, for EC. Comparing to the period before APEC, 70% and 60% of fossil EC and OC and 60% and 50% of nonfossil EC and OC are reduced, respectively, implying that the control on the nonfossil sources has considerable contribution to the good air quality in Beijing. Both EC and OC mass loadings during the APEC summit would have increased by 60% if the biomass-burning activities were not taken into account for control. In such a case, the atmospheric visibility would decrease 20% at least and the blue sky thereby would likely not have been visible during the summit. ©2016. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62917
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China; State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China; Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; College of Environmental Science and Engineering, Tongji University, Shanghai, China

Recommended Citation:
Liu J.,Mo Y.,Li J.,et al. Radiocarbon-derived source apportionment of fine carbonaceous aerosols before, during, and after the 2014 Asia-Pacific Economic Cooperation (APEC) summit in Beijing, China[J]. Journal of Geophysical Research: Atmospheres,2016-01-01,121(8)
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