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DOI | 10.5194/acp-17-6651-2017 |
A novel method for deriving the aerosol hygroscopicity parameter based only on measurements from a humidified nephelometer system | |
Kuang, Ye1; Zhao, Chunsheng1; Tao, Jiangchuan1; Bian, Yuxuan2; Ma, Nan3; Zhao, Gang1 | |
2017-06-07 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Germany |
英文摘要 | Aerosol hygroscopicity is crucial for understanding roles of aerosol particles in atmospheric chemistry and aerosol climate effects. Light-scattering enhancement factor f (RH, lambda) is one of the parameters describing aerosol hygroscopicity, which is defined as f (RH, lambda) = sigma(sp) (RH, lambda)/sigma(sp) (dry, lambda) where sigma(sp) (RH, lambda) or sigma(sp) (dry, lambda,) represents sigma(sp) at wavelength lambda, under certain relative humidity (RH) or dry conditions. Traditionally, an overall hygroscopicity parameter ic can be retrieved from measured f (RH, lambda) hereinafter referred to as icf (RH), by combining concurrently measured particle number size distribution (PNSD) and mass concentration of black carbon. In this paper, a new method is proposed to directly derive kappa(f) (RH) based only on measurements from a three-wavelength humidified nephelometer system. The advantage of this newly proposed approach is that kappa(f) (RH) can be estimated without any additional information about PNSD and black carbon. This method is verified with measurements from two different field campaigns. Values of kappa(f) (RH) estimated from this new method agree very well with those retrieved by using the traditional method: all points lie near the 1 : 1 line and the square of correlation coefficient between them is 0.99. The verification results demonstrate that this newly proposed method of deriving kappa(f) (RH) is applicable at different sites and in seasons of the North China Plain and might also be applicable in other regions around the world. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403003900001 |
WOS关键词 | HIGH RELATIVE-HUMIDITY ; OPTICAL-PROPERTIES ; CHEMICAL-COMPOSITION ; DIURNAL-VARIATIONS ; MIXING STATE ; CHINA ; SCATTERING ; GROWTH ; BACKSCATTERING ; ABSORPTION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/31114 |
专题 | 地球科学 |
作者单位 | 1.Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing, Peoples R China; 2.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing, Peoples R China; 3.Leibniz Inst Tropospher Res, Leipzig, Germany |
推荐引用方式 GB/T 7714 | Kuang, Ye,Zhao, Chunsheng,Tao, Jiangchuan,et al. A novel method for deriving the aerosol hygroscopicity parameter based only on measurements from a humidified nephelometer system[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(11). |
APA | Kuang, Ye,Zhao, Chunsheng,Tao, Jiangchuan,Bian, Yuxuan,Ma, Nan,&Zhao, Gang.(2017).A novel method for deriving the aerosol hygroscopicity parameter based only on measurements from a humidified nephelometer system.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(11). |
MLA | Kuang, Ye,et al."A novel method for deriving the aerosol hygroscopicity parameter based only on measurements from a humidified nephelometer system".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.11(2017). |
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