Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1919343117 |
An unexpected catalyst dominates formation and radiative forcing of regional haze | |
Zhang, Fang1,2; Wang, Yuan3; Peng, Jianfei2; Chen, Lu1; Sun, Yele4; Duan, Lian2,5; Ge, Xinlei6; Li, Yixin7; Zhao, Jiayun7; Liu, Chao8; Zhang, Xiaochun9,10; Zhang, Gen9,10; Pan, Yuepeng4; Wang, Yuesi4; Zhang, Annie L.11; Ji, Yuemeng12; Wang, Gehui13; Hu, Min14; Molina, Mario J.15; Zhang, Renyi2,7 | |
2020-02-25 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2020 |
卷号 | 117期号:8页码:3960-3966 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
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. |
英文关键词 | black carbon air pollution climate multiphase chemistry haze |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000516771500017 |
WOS关键词 | BLACK CARBON ; ATMOSPHERIC AMMONIA ; OPTICAL-PROPERTIES ; AIR-POLLUTION ; AEROSOLS ; CHINA ; NANOPARTICLES ; VARIABILITY ; PARTICLES ; IMPACTS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/249686 |
专题 | 地球科学 |
作者单位 | 1.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China; 2.Texas A&M Univ, Dept Atmospher Sci, College Stn, TX 77843 USA; 3.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA; 4.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100080, Peoples R China; 5.East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China; 6.Nanjing Univ Informat Sci & Technol, Jiangsu Key Lab Atmospher Environm Monitoring & P, Nanjing 210044, Peoples R China; 7.Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA; 8.Nanjing Univ Informat Sci & Technol, Sch Atmospher Phys, Nanjing 210044, Peoples R China; 9.Chinese Acad Meteorol Sci, Chinese Meteorol Adm, State Key Lab Severe Weather, Beijing 100081, Peoples R China; 10.Chinese Acad Meteorol Sci, Chinese Meteorol Adm, Key Lab Atmospher Chem, Beijing 100081, Peoples R China; 11.Univ Texas Austin, Dept Chem, Coll Nat Sci, Austin, TX 78712 USA; 12.Guangdong Univ Technol, Guangzhou Key Lab Environm Catalysis & Pollut Con, Inst Environm Hlth & Pollut Control, Sch Environm Sci & Engn, Guangzhou 510006, Peoples R China; 13.East China Normal Univ, Sch Geog Sci, Minist Educ, Key Lab Geog Informat Sci, Shanghai 200241, Peoples R China; 14.Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China; 15.Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA |
推荐引用方式 GB/T 7714 | Zhang, Fang,Wang, Yuan,Peng, Jianfei,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,2020,117(8):3960-3966. |
APA | Zhang, Fang.,Wang, Yuan.,Peng, Jianfei.,Chen, Lu.,Sun, Yele.,...&Zhang, Renyi.(2020).An unexpected catalyst dominates formation and radiative forcing of regional haze.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(8),3960-3966. |
MLA | Zhang, Fang,et al."An unexpected catalyst dominates formation and radiative forcing of regional haze".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.8(2020):3960-3966. |
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