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DOI | 10.5194/acp-17-4147-2017 |
Analysis of extinction properties as a function of relative humidity using a kappa-EC-Mie model in Nanjing | |
Zhang, Zefeng1; Shen, Yan2; Li, Yanwei1; Zhu, Bin1; Yu, Xingna1 | |
2017-03-28 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The relationship between relative humidity (RH) and extinction properties is of widespread concern. In this study, a hygroscopic parameter (kappa) and the volume fraction of elemental carbon (EC) were used to characterize the chemical characteristics of particles, and a core-shell model was built based on these characteristics. The size distribution, chemical composition, and RH were measured in Nanjing from 15 October to 13 November 2013. The model-derived extinction coefficients of particles were fit with the program of coated spheres according to Bohren and Huffman (2008) (BHCOAT), and the modeled values correlated well with the measurement-derived extinction coefficients (r(2) = 0.81), which suggested that the core-shell model produced reasonable results. The results show that more than 81% of the extinction coefficient in Nanjing was due to particles in the 0.2-1.0 mu m size range. Under dry conditions, the higher mass fraction of particles in the 0.2-1.0 mu m size range caused the higher extinction coefficient. An increase in RH led to a significant increase in the extinction coefficient, although the increases differed among the different size segments. For lambda = 550 nm, the extinction coefficient from the 0.01-0.2, 0.2-0.5, and 1.0-2.0 mu m size ranges increased significantly with the increase in RH, whereas the extinction contributions from the 0.5-1.0 and 2.0-10.0 mu m size ranges to the extinction coefficient decreased slightly. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000397937400002 |
WOS关键词 | AEROSOL OPTICAL-PROPERTIES ; SINGLE-PARAMETER REPRESENTATION ; LIGHT-SCATTERING MEASUREMENTS ; CONDENSATION NUCLEUS ACTIVITY ; PEARL RIVER-DELTA ; NORTH CHINA PLAIN ; HYGROSCOPIC GROWTH ; IN-SITU ; ATMOSPHERIC VISIBILITY ; CHEMICAL-COMPOSITION |
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/24998 |
专题 | 地球科学 |
作者单位 | 1.Nanjing Univ Informat Sci Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteor, Key Lab Aerosol Cloud Precipitat, China Meteorol Adm, Nanjing 210044, Jiangsu, Peoples R China; 2.Fenghua Meteorol Bur, Fenghua 315500, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Zefeng,Shen, Yan,Li, Yanwei,et al. Analysis of extinction properties as a function of relative humidity using a kappa-EC-Mie model in Nanjing[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(6). |
APA | Zhang, Zefeng,Shen, Yan,Li, Yanwei,Zhu, Bin,&Yu, Xingna.(2017).Analysis of extinction properties as a function of relative humidity using a kappa-EC-Mie model in Nanjing.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(6). |
MLA | Zhang, Zefeng,et al."Analysis of extinction properties as a function of relative humidity using a kappa-EC-Mie model in Nanjing".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.6(2017). |
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