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Characteristics of aerosol size distribution and liquid water content under ambient RH conditions in Beijing

文献类型：期刊论文

作者Dai, Haosheng3,5; Zhang, Jiaoshi1,3,7; Gui, Huaqiao2,3; Shen, Lin3,5; Wei, Xiuli2,3; Xie, Zhibo3; Chen, Shiyi8; Wu, Zhijun8; Chen, Da-Ren4; Liu, Jianguo2,3,6
刊名ATMOSPHERIC ENVIRONMENT
出版日期2022-12-15
卷号291
ISSN号1352-2310
关键词Aerosol liquid water content Particle number size distribution Relative humidity Hygroscopic growth
DOI10.1016/j.atmosenv.2022.119397
通讯作者Zhang, Jiaoshi(jszhang@aiofm.ac.cn) ; Liu, Jianguo(jgliu@aiofm.ac.cn)
英文摘要The variation of ambient relative humidity (RH) affects the water uptake of aerosols in the atmosphere, thereby altering the aerosol size distribution and mass concentration. In this study, aerosol size distributions under both dry and ambient RH conditions are measured using an active RH-controlled dry-ambient aerosol size spectrometer (DAASS) at an urban site in Beijing during the springtime of 2021, and the aerosol liquid water content (ALWC) is derived accordingly. During the measurement period, a sharp increase of the ALWC was commonly observed when ambient RHs reached above 50%, demonstrating a potential phase change of the aerosol which further increases the rate of water uptake. Considerably high ALWC events were observed during the nighttime, with further elevated ambient RH above 60%. The liquid water accounts for up to 42.5% of the total aerosol volume, corresponding to a maximum ALWC of 8.79 mu g m(-3) . The evolution of geometric mean diameter of accumulation mode particles agrees well with the enhancement of the ALWC (R-2 of 0.73), revealing a significant growth of accumulation mode particles resulting from water uptake. Besides, by investigating the RH-dependent ambient aerosol surface area concentration, it is found that the aerosol surface area concentration can be underestimated by similar to 20% under dry conditions when the ambient RH elevates to above 70%.
WOS关键词PARTICLE FORMATION ; URBAN ATMOSPHERE ; CHINA ; GROWTH ; SHRINKAGE ; EPISODES ; STATE
资助项目National Nature Science Foun-dation of China ; National Key R&D Program of China ; Science and Technological Fund of Anhui Province ; [41905028] ; [2017YFC0209504] ; [1908085MD114]
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000869099500004
资助机构National Nature Science Foun-dation of China ; National Key R&D Program of China ; Science and Technological Fund of Anhui Province
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/129935]  
专题中国科学院合肥物质科学研究院
通讯作者Zhang, Jiaoshi; Liu, Jianguo
作者单位1.Washington Univ St Louis, Ctr Aerosol Sci & Engn, St Louis, MO USA
2.Chinese Acad Sci, Inst Urban Environm, CAS Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China
3.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China
4.Virginia Commonwealth Univ, Dept Mech & Nucl Engn, Particle Lab, Richmond, VA 23284 USA
5.Univ Sci & Technol China, Hefei 230026, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
7.Washington Univ St Louis, Ctr Aerosol Sci & Engn, St Louis, MO 63130 USA
8.Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Cont, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714		 Dai, Haosheng,Zhang, Jiaoshi,Gui, Huaqiao,et al. Characteristics of aerosol size distribution and liquid water content under ambient RH conditions in Beijing[J]. ATMOSPHERIC ENVIRONMENT,2022,291.
APA Dai, Haosheng.,Zhang, Jiaoshi.,Gui, Huaqiao.,Shen, Lin.,Wei, Xiuli.,...&Liu, Jianguo.(2022).Characteristics of aerosol size distribution and liquid water content under ambient RH conditions in Beijing.ATMOSPHERIC ENVIRONMENT,291.
MLA Dai, Haosheng,et al."Characteristics of aerosol size distribution and liquid water content under ambient RH conditions in Beijing".ATMOSPHERIC ENVIRONMENT 291(2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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