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DOI | 10.1029/2019GL085379 |
A New Method for Distinguishing Unactivated Particles in Cloud Condensation Nuclei Measurements: Implications for Aerosol Indirect Effect Evaluation | |
Wang, Yuan1; Niu, Shengjie1,2; Lv, Jingjing1; Lu, Chunsong1; Xu, Xiaoqi1; Wang, Yuying1; Ding, Jie3; Zhang, Hongwei1; Wang, Tianshu1; Kang, Boshi4 | |
2019-12-12 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:23页码:14185-14194 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | An ongoing challenge for cloud condensation nuclei (CCN) measurements is the inclusion of unactivated particles, which affects droplet activation parameterizations and aerosol indirect effects in models. For the first time, a reciprocal relationship between the critical diameter and critical supersaturation of activated droplets from the kappa-Kohler theory is derived to accurately count unactivated particles in CCN measurements. We conducted 4-day continuous observations to simultaneously measure the number concentration of CCN (N-CCN) and aerosol. The results show that as supersaturation (SS) decreases from 0.186% at 25 degrees C, the proportion of the unactivated particles in the CCN measurements increases, reaching 88% at SS of 0.07%. Owing to the N-CCN overestimation caused by N-CCN-SS parameterizations with uncorrected N-CCN, there is significant overestimation of aerosol indirect effects, especially under low SS conditions. After removing unactivated particles, N-CCN-SS parameterizations are adjusted accordingly, which can improve simulations of aerosol-cloud-radiation interactions in models. |
英文关键词 | cloud condensation nuclei (CCN) unactivated particles kappa-Kohler theory CCN activation parameterizations aerosol indirect effects |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000502332600001 |
WOS关键词 | YANGTZE-RIVER DELTA ; ANTHROPOGENIC AEROSOLS ; THRESHOLD BEHAVIOR ; SIZE DISTRIBUTION ; CCN ACTIVITY ; CLIMATE ; PARAMETERIZATION ; ACTIVATION ; DISPERSION ; POLLUTION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/225193 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, China Meteorol Adm, Key Lab Aerosol Cloud Precipitat, Nanjing, Jiangsu, Peoples R China; 2.Nanjing Tech Univ, Coll Safety Sci & Engn, Nanjing, Jiangsu, Peoples R China; 3.Lanzhou Univ, Coll Atmospher Sci, Lanzhou, Gansu, Peoples R China; 4.Liaoning Prov Meteorol Equipment Support Ctr, Shenyang, Liaoning, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Yuan,Niu, Shengjie,Lv, Jingjing,et al. A New Method for Distinguishing Unactivated Particles in Cloud Condensation Nuclei Measurements: Implications for Aerosol Indirect Effect Evaluation[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(23):14185-14194. |
APA | Wang, Yuan.,Niu, Shengjie.,Lv, Jingjing.,Lu, Chunsong.,Xu, Xiaoqi.,...&Kang, Boshi.(2019).A New Method for Distinguishing Unactivated Particles in Cloud Condensation Nuclei Measurements: Implications for Aerosol Indirect Effect Evaluation.GEOPHYSICAL RESEARCH LETTERS,46(23),14185-14194. |
MLA | Wang, Yuan,et al."A New Method for Distinguishing Unactivated Particles in Cloud Condensation Nuclei Measurements: Implications for Aerosol Indirect Effect Evaluation".GEOPHYSICAL RESEARCH LETTERS 46.23(2019):14185-14194. |
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