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Effect of ambient humidity on the light absorption amplification of black carbon in Beijing during January 2013
Wu, Yunfei1; Zhang, Renjian1,2; Tian, Ping1; Tao, Jun3; Hsu, S-C4; Yan, Peng5; Wang, Qiyuan6; Cao, Junji6; Zhang, Xiaoling7; Xia, Xiangao8
2016
Source PublicationATMOSPHERIC ENVIRONMENT
Volume124Issue:2016Pages:217-223
SubtypeArticle
AbstractBlack carbon (BC) and its mixing state were measured with a ground-based single particle soot photometer in urban Beijing during the extremely polluted winter of w2013. Up to 70 +/- 14% of the BC-containing particles were thickly-coated during periods of haze, compared to 37 +/- 9% on non-hazy days. The thickly-coated number fraction (NFBC-thick) increased with increasing BC, reaching a plateau at similar to 80-90% when BC concentrations were >= 15 mu g m(-3) and visibility was <= 2 km. Regional inflows brought more aged, highly thickly-coated BC to Beijing during haze. The absorption coefficient showed a distinct linear correlation with BC concentration; the mass absorption efficiency (MAE) of BC was acquired, with an overall mean of 4.2 +/- 0.01 m(2) g(-1) at 870 nm. The MAE of BC amplified with increasing ambient relative humidity. This was largely explained by the increase in NFBC-thick, which was likely due to the enhanced production of secondary aerosol under humid conditions. (C) 2015 Elsevier Ltd. All rights reserved.
KeywordHaze Black Carbon Light Absorption Ambient Humidity
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1016/j.atmosenv.2015.04.041
WOS KeywordPARTICLE SOOT PHOTOMETER ; YANGTZE-RIVER DELTA ; MIXING STATE ; OPTICAL-PROPERTIES ; AEROSOL CHARACTERIZATION ; EVOLUTION PROCESSES ; CHINA IMPLICATIONS ; AIR-POLLUTION ; WINTER HAZE ; SOUTH CHINA
Indexed BySCI
Language英文
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences
WOS IDWOS:000367860100013
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Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5857
Collection粉尘与环境研究室
Affiliation1.Chinese Acad Sci, Inst Atmospher Phys, RCE TEA, Beijing 100029, Peoples R China
2.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing 210044, Jiangsu, Peoples R China
3.Minist Environm Protect, South China Inst Environm Sci, Guangzhou 510655, Guangdong, Peoples R China
4.Acad Sinica, Res Ctr Environm Changes, Taipei 115, Taiwan
5.Meteorol Observat Ctr CMA, CAWAS, Beijing 100081, Peoples R China
6.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol, SKLLQG, Xian 710075, Peoples R China
7.Chinese Meteorol Adm, Inst Urban Meteorol, Beijing 100089, Peoples R China
8.Chinese Acad Sci, Inst Atmospher Phys, LAGEO, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Wu, Yunfei,Zhang, Renjian,Tian, Ping,et al. Effect of ambient humidity on the light absorption amplification of black carbon in Beijing during January 2013[J]. ATMOSPHERIC ENVIRONMENT,2016,124(2016):217-223.
APA Wu, Yunfei.,Zhang, Renjian.,Tian, Ping.,Tao, Jun.,Hsu, S-C.,...&Xia, Xiangao.(2016).Effect of ambient humidity on the light absorption amplification of black carbon in Beijing during January 2013.ATMOSPHERIC ENVIRONMENT,124(2016),217-223.
MLA Wu, Yunfei,et al."Effect of ambient humidity on the light absorption amplification of black carbon in Beijing during January 2013".ATMOSPHERIC ENVIRONMENT 124.2016(2016):217-223.
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