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DOI | 10.1029/2018JD028315 |
Method to Estimate Water Vapor Supersaturation in the Ambient Activation Process Using Aerosol and Droplet Measurement Data | |
Shen, Chuanyang1; Zhao, Chunsheng1; Ma, Nan2; Tao, Jiangchuan2; Zhao, Gang1; Yu, Yingli1; Kuang, Ye2 | |
2018-09-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:18页码:10606-10619 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Water vapor supersaturation, as one of the most important environmental parameters during the formation of clouds or fogs, cannot be directly measured, and few studies have been carried out to estimate it in the ambient activation process. In this study, a new method to estimate the water vapor supersaturation based on the inverse application of -Kohler theory is proposed. Aerosol hygroscopic parameter , dry particle size distributions, and wet droplet size distributions were employed and a comparison of predicted droplet number concentration with the measurement results was made to obtain the effective supersaturation during the activation process. Using this method, we acquired the supersaturations varying from 0.01% to 0.05% in a fog episode observed in the North China Plain. In this fog episode, both hydrated unactivated droplets and activated droplets play a part in the total detected droplet number concentrations with the unactivated droplets' ratio decreasing with size. The sensitivity study was also made to evaluate the effects of droplet and aerosol hygroscopic measurement errors on the supersaturation ratio estimation. Water vapor supersaturation obtained with this method can be regarded as an effective value and can be further applied to cloud analysis in the future. This method is only based on conventional measurements of aerosol and droplets and does not rely on any other data, which makes it flexible and easy to perform. Calculated supersaturations and critical diameters can also deepen the understanding of ambient activation process and corresponding interactions between aerosol and droplet characteristics. |
英文关键词 | supersaturation aerosol activation cloud fog |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447807300033 |
WOS关键词 | NORTH CHINA PLAIN ; HYGROSCOPIC GROWTH ; RELATIVE-HUMIDITY ; CHEMICAL-COMPOSITION ; ORGANIC AEROSOL ; RADIATION FOG ; MIXING STATE ; CLOUD ; CONDENSATION ; CAMPAIGN |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/33533 |
专题 | 气候变化 |
作者单位 | 1.Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing, Peoples R China; 2.Jinan Univ, Inst Environm & Climate Res, Guangzhou, Guangdong, Peoples R China |
推荐引用方式 GB/T 7714 | Shen, Chuanyang,Zhao, Chunsheng,Ma, Nan,et al. Method to Estimate Water Vapor Supersaturation in the Ambient Activation Process Using Aerosol and Droplet Measurement Data[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(18):10606-10619. |
APA | Shen, Chuanyang.,Zhao, Chunsheng.,Ma, Nan.,Tao, Jiangchuan.,Zhao, Gang.,...&Kuang, Ye.(2018).Method to Estimate Water Vapor Supersaturation in the Ambient Activation Process Using Aerosol and Droplet Measurement Data.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(18),10606-10619. |
MLA | Shen, Chuanyang,et al."Method to Estimate Water Vapor Supersaturation in the Ambient Activation Process Using Aerosol and Droplet Measurement Data".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.18(2018):10606-10619. |
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