气候变化领域集成服务门户(CCPortal): Increased inorganic aerosol fraction contributes to air pollution and haze in China

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DOI	10.5194/acp-19-5881-2019
	Increased inorganic aerosol fraction contributes to air pollution and haze in China
	Wang Y.; Wang Y.; Wang L.; Petäjä T.; Zha Q.; Gong C.; Li S.; Pan Y.; Hu B.; Xin J.; Kulmala M.
发表日期	2019
ISSN	16807316
起始页码	5881
结束页码	5888
卷号	19 期号:9
英文摘要	The detailed formation mechanism of an increased number of haze events in China is still not very clear. Here, we found that reduced surface visibility from 1980 to 2010 and an increase in satellite-derived columnar concentrations of inorganic precursors from 2002 to 2012 are connected with each other. Typically, higher inorganic mass fractions lead to increased aerosol water uptake and light-scattering ability in elevated relative humidity. Satellite observation of aerosol precursors of NO2 and SO2 showed increased concentrations during the study period. Our in situ measurement of aerosol chemical composition in Beijing also confirmed increased contribution of inorganic aerosol fraction as a function of the increased particle pollution level. Our investigations demonstrate that the increased inorganic fraction in the aerosol particles is a key component in the frequently occurring haze days during the study period, and particularly the reduction of nitrate, sulfate and their precursor gases would contribute towards better visibility in China. © 2019 Author(s). This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
scopus关键词	aerosol; aerosol composition; atmospheric pollution; concentration (composition); haze; inorganic matter; particulate matter; Beijing [Beijing (ADS)]; Beijing [China]; China
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144443
作者单位	State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, P.O. Box 64, Helsinki, 00014, Finland; Joint International Research Laboratory of Atmospheric and Earth SysTem Sciences (JirLATEST), Nanjing University, Nanjing, China; Institute of Arid Meteorology, China Meteorological Administration, Lanzhou, China; Aerosol and Haze Laboratory, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology (BUCT), Beijing, China; Centre for Excellence in Atmospheric Urban Environment, Institute of Urban Environment, Chinese Academy of Science, Xiamen, Fujian, China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; U...
推荐引用方式 GB/T 7714	Wang Y.,Wang Y.,Wang L.,et al. Increased inorganic aerosol fraction contributes to air pollution and haze in China[J],2019,19(9).
APA	Wang Y..,Wang Y..,Wang L..,Petäjä T..,Zha Q..,...&Kulmala M..(2019).Increased inorganic aerosol fraction contributes to air pollution and haze in China.Atmospheric Chemistry and Physics,19(9).
MLA	Wang Y.,et al."Increased inorganic aerosol fraction contributes to air pollution and haze in China".Atmospheric Chemistry and Physics 19.9(2019).