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Elevated dust layers inhibit dissipation of heavy anthropogenic surface air pollution

文献类型：期刊论文

作者Wang, Zhuang5,11; Liu, Cheng1,4,5,10,11; Xie, Zhouqing1,2,5,10; Hu, Qihou5; Andreae, Meinrat O.6,7; Dong, Yunsheng5; Zhao, Chun3; Liu, Ting3; Zhu, Yizhi5,11; Liu, Haoran9
刊名ATMOSPHERIC CHEMISTRY AND PHYSICS
出版日期2020-12-03
卷号20
ISSN号1680-7316
DOI10.5194/acp-20-14917-2020
通讯作者Liu, Cheng(chliu81@ustc.edu.cn) ; Xie, Zhouqing(zqxie@ustc.edu.cn) ; Hu, Qihou(qhhu@aiofm.ac.cn)
英文摘要Persistent wintertime heavy haze incidents caused by anthropogenic aerosols have repeatedly shrouded North China in recent years, while natural dust from the west and northwest of China also frequently affects air quality in this region. Through continuous observation by a multi-wavelength Raman lidar, here we found that wintertime aerosols in North China are typically characterized by a pronounced vertical stratification, where scattering nonspherical particles (dust or mixtures of dust and anthropogenic aerosols) dominated above the planetary boundary layer (PBL), and absorbing spherical particles (anthropogenic aerosols) prevailed within the PBL. This stratification is governed by meteorological conditions that strong northwesterly winds usually prevailed in the lower free troposphere, and southerly winds dominated in the PBL, producing persistent and intense haze pollution. With the increased contribution of elevated dust to the upper aerosols, the proportion of aerosol and trace gas at the surface in the whole column increased. Model results show that, besides directly deteriorating air quality, the key role of the elevated dust is to depress the development of PBL and weaken the turbulent exchange, mostly by lower level cooling and upper level heating, and it is more obvious during the dissipation stage, thus inhibiting the dissipation of heavy surface anthropogenic aerosols. The interactions of natural dust and anthropogenic aerosols under the unique topography of North China increase the surface anthropogenic aerosols and precursor gases, which may be one of the reasons why haze pollution in North China is heavier than that in other heavily polluted areas in China.
WOS关键词SPECTRAL-RESOLUTION LIDAR ; AEROSOL OPTICAL-PROPERTIES ; TO-BACKSCATTER RATIO ; BOUNDARY-LAYER ; RAMAN LIDAR ; DEPOLARIZATION RATIO ; MINERAL DUST ; BLACK CARBON ; NORTH CHINA ; MAX-DOAS
资助项目National Key Research and Development Program of China[2018YFC0213104] ; National Key Research and Development Program of China[2017YFC0210002] ; National Key Research and Development Program of China[2016YFC0203302] ; Anhui Science and Technology Major Project[18030801111] ; National Natural Science Foundation of China[41722501] ; National Natural Science Foundation of China[51778596] ; National Natural Science Foundation of China[41977184] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23020301] ; National Key Project for Causes and Control of Heavy Air Pollution[DQGG0102] ; National Key Project for Causes and Control of Heavy Air Pollution[DQGG0205] ; Major Projects of High Resolution Earth Observation Systems of National Science and Technology[05Y30B01-9001-19/20-3] ; Civil Aerospace Technology Advance Research Project[Y7K00100KJ]
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种英语
出版者COPERNICUS GESELLSCHAFT MBH
WOS记录号WOS:000595239200004
资助机构National Key Research and Development Program of China ; Anhui Science and Technology Major Project ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key Project for Causes and Control of Heavy Air Pollution ; Major Projects of High Resolution Earth Observation Systems of National Science and Technology ; Civil Aerospace Technology Advance Research Project
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/105412]  
专题中国科学院合肥物质科学研究院
通讯作者Liu, Cheng; Xie, Zhouqing; Hu, Qihou
作者单位1.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China
2.Univ Sci & Technol China, Dept Environm Sci & Engn, Hefei 230026, Peoples R China
3.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China
4.Univ Sci & Technol China, Anhui Higher Educ Inst, Key Lab Precis Sci Instrumentat, Hefei 230026, Peoples R China
5.Chinese Acad Sci, Hefei Inst Phys Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China
6.Max Planck Inst Chem, D-55128 Mainz, Germany
7.King Saud Univ, Dept Geol & Geophys, Riyadh 11451, Saudi Arabia
8.Univ Sci & Technol China, Sch Environm Sci & Optoelect Technol, Hefei 230026, Peoples R China
9.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230601, Peoples R China
10.Univ Sci & Technol China, Anhui Prov Key Lab Polar Environm & Global Change, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Zhuang,Liu, Cheng,Xie, Zhouqing,et al. Elevated dust layers inhibit dissipation of heavy anthropogenic surface air pollution[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20.
APA Wang, Zhuang.,Liu, Cheng.,Xie, Zhouqing.,Hu, Qihou.,Andreae, Meinrat O..,...&Liu, Jianguo.(2020).Elevated dust layers inhibit dissipation of heavy anthropogenic surface air pollution.ATMOSPHERIC CHEMISTRY AND PHYSICS,20.
MLA Wang, Zhuang,et al."Elevated dust layers inhibit dissipation of heavy anthropogenic surface air pollution".ATMOSPHERIC CHEMISTRY AND PHYSICS 20(2020).

入库方式： OAI收割

来源：合肥物质科学研究院

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