globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1919343117
论文题名:
An unexpected catalyst dominates formation and radiative forcing of regional haze
作者: Zhang F.; Wang Y.; Peng J.; Chen L.; Sun Y.; Duan L.; Ge X.; Li Y.; Zhao J.; Liu C.; Zhang X.; Zhang G.; Pan Y.; Wang Y.; Zhang A.L.; Ji Y.; Wang G.; Hu M.; Molina M.J.; Zhang R.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:8
起始页码: 3960
结束页码: 3966
语种: 英语
英文关键词: Air pollution ; Black carbon ; Climate ; Haze ; Multiphase chemistry
Scopus关键词: ammonia ; black carbon ; nitrogen oxide ; sulfate ; sulfur dioxide ; Article ; catalyst ; chemical analysis ; chemical reaction ; climate change ; concentration (parameter) ; controlled study ; environmental impact assessment ; environmental management ; environmental monitoring ; geographic distribution ; haze ; humidity ; oxidation ; pollution transport ; priority journal ; radiative forcing ; radioactivity ; seasonal variation ; trend study
英文摘要: Although regional haze adversely affects human health and possibly counteracts global warming from increasing levels of greenhouse gases, the formation and radiative forcing of regional haze on climate remain uncertain. By combining field measurements, laboratory experiments, and model simulations, we show a remarkable role of black carbon (BC) particles in driving the formation and trend of regional haze. Our analysis of long-term measurements in China indicates declined frequency of heavy haze events along with significantly reduced SO2, but negligibly alleviated haze severity. Also, no improving trend exists for moderate haze events. Our complementary laboratory experiments demonstrate that SO2 oxidation is efficiently catalyzed on BC particles in the presence of NO2 and NH3, even at low SO2 and intermediate relative humidity levels. Inclusion of the BC reaction accounts for about 90–100% and 30–50% of the sulfate production during moderate and heavy haze events, respectively. Calculations using a radiative transfer model and accounting for the sulfate formation on BC yield an invariant radiative forcing of nearly zero W m−2 on the top of the atmosphere throughout haze development, indicating small net climatic cooling/warming but large surface cooling, atmospheric heating, and air stagnation. This BC catalytic chemistry facilitates haze development and explains the observed trends of regional haze in China. Our results imply that reduction of SO2 alone is insufficient in mitigating haze occurrence and highlight the necessity of accurate representation of the BC chemical and radiative properties in predicting the formation and assessing the impacts of regional haze. © 2020 National Academy of Sciences. 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/164315
Appears in Collections:气候变化与战略

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作者单位: Zhang, F., College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China, Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, United States; Wang, Y., Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, United States; Peng, J., Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, United States; Chen, L., College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China; Sun, Y., State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100080, China; Duan, L., Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, United States, State Environmental Protection Key Lab of Environmental Risk Assessment and Control on Chemical Processes, East China University of Science and Technology, Shanghai, 200237, China; Ge, X., Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Li, Y., Department of Chemistry, Texas A&M University, College Station, TX 77843, United States; Zhao, J., Department of Chemistry, Texas A&M University, College Station, TX 77843, United States; Liu, C., School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Zhang, X., State Key Laboratory of Severe Weather, Chinese Meteorological Administration, Chinese Academy of Meteorological Sciences, Beijing, 100081, China, Key Laboratory of Atmospheric Chemistry, Chinese Meteorological Administration, Chinese Academy of Meteorological Sciences, Beijing, 100081, China; Zhang, G., State Key Laboratory of Severe Weather, Chinese Meteorological Administration, Chinese Academy of Meteorological Sciences, Beijing, 100081, China, Key Laboratory of Atmospheric Chemistry, Chinese Meteorological Administration, Chinese Academy of Meteorological Sciences, Beijing, 100081, China; Pan, Y., State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100080, China; Wang, Y., State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100080, China; Zhang, A.L., Department of Chemistry, College of Natural Sciences, University of Texas at Austin, Austin, TX 78712, United States; Ji, Y., Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China; Wang, G., Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai, 200241, China; Hu, M., State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; Molina, M.J., Department of Chemistry and Biochemistry, University of California San Diego, San Diego, CA 92093, United States; Zhang, R., Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, United States, Department of Chemistry, Texas A&M University, College Station, TX 77843, United States

Recommended Citation:
Zhang F.,Wang Y.,Peng J.,et al. An unexpected catalyst dominates formation and radiative forcing of regional haze[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(8)
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