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Unexpected air pollution with marked emission reductions during the COVID-19 outbreak in China
文献类型：期刊论文
| 作者 | Le, Tianhao2; Wang, Yuan2; Liu, Lang3,4; Yang, Jiani2; Yung, Yuk L.2; Li, Guohui3,4; Seinfeld, John H.1,5 |
| 刊名 | SCIENCE
 |
| 出版日期 | 2020-08-07 |
| 卷号 | 369期号:6504页码:702-+ |
| ISSN号 | 0036-8075 |
| DOI | 10.1126/science.abb7431 |
| 通讯作者 | Wang, Yuan(yuan.wang@caltech.edu) |
| 英文摘要 | The absence of motor vehicle traffic and suspended manufacturing during the coronavirus disease 2019 (COVID-19) pandemic in China enabled assessment of the efficiency of air pollution mitigation. Up to 90% reduction of certain emissions during the city-lockdown period can be identified from satellite and ground-based observations. Unexpectedly, extreme particulate matter levels simultaneously occurred in northern China. Our synergistic observation analyses and model simulations show that anomalously high humidity promoted aerosol heterogeneous chemistry, along with stagnant airflow and uninterrupted emissions from power plants and petrochemical facilities, contributing to severe haze formation. Also, because of nonlinear production chemistry and titration of ozone in winter, reduced nitrogen oxides resulted in ozone enhancement in urban areas, further increasing the atmospheric oxidizing capacity and facilitating secondary aerosol formation. |
| WOS关键词 | MEXICO-CITY ; MODELING SYSTEM ; APEC BLUE ; AEROSOLS ; HAZE ; HONO ; PHOTOCHEMISTRY ; GASES |
| 资助项目 | NSF[AGS-1700727] ; National Key RD Plan[2017YFC0210000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB40030203] ; Jet Propulsion Laboratory, California Institute of Technology ; NASA |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000559184400048 |
| 出版者 | AMER ASSOC ADVANCEMENT SCIENCE |
| 资助机构 | NSF ; National Key RD Plan ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Jet Propulsion Laboratory, California Institute of Technology ; NASA |
| 源URL | [http://ir.ieecas.cn/handle/361006/15153]  |
| 专题 | 地球环境研究所_粉尘与环境研究室 |
| 通讯作者 | Wang, Yuan |
| 作者单位 | 1.CALTECH, Div Engn & Appl Sci, Pasadena, CA 91125 USA 2.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA 3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China 4.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian, Shaanxi, Peoples R China 5.CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA |
| 推荐引用方式 GB/T 7714 | Le, Tianhao,Wang, Yuan,Liu, Lang,et al. Unexpected air pollution with marked emission reductions during the COVID-19 outbreak in China[J]. SCIENCE,2020,369(6504):702-+. |
| APA | Le, Tianhao.,Wang, Yuan.,Liu, Lang.,Yang, Jiani.,Yung, Yuk L..,...&Seinfeld, John H..(2020).Unexpected air pollution with marked emission reductions during the COVID-19 outbreak in China.SCIENCE,369(6504),702-+. |
| MLA | Le, Tianhao,et al."Unexpected air pollution with marked emission reductions during the COVID-19 outbreak in China".SCIENCE 369.6504(2020):702-+. |
入库方式： OAI收割
来源：地球环境研究所
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