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DOI | 10.1029/2019GL086764 |
Black Carbon Particles Do Not Matter for Immersion Mode Ice Nucleation | |
Kanji, Zamin A.1; Welti, Andre1,2; Corbin, Joel C.1,3; Mensah, Amewu A.1,4 | |
2020-05-03 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland; Finland; Canada |
英文摘要 | The role of black carbon (BC) in ice crystal formation via immersion freezing relevant for mixed-phase cloud formation is uncertain. Previous studies report either negligible or significant contributions of BC particles to cloud glaciation via immersion freezing. Despite conflicting evidence, immersion freezing by BC particles is included in several cloud models. Here we show that fossil fuel soot and commercially available hydrocarbon BC is inactive as immersion freezing nuclei for atmospherically relevant particle sizes and surface areas. Instead, temperatures <235 K are necessary for freezing droplets with immersed soot particles, implying homogeneous freezing, rather than immersion freezing by soot. A comparison of the results to previous studies using larger soot aggregates and dust reveals the ineffectiveness of soot as immersion ice nucleating particles. We conclude that soot particles with properties like those investigated here can be neglected for simulating ice nucleation in mixed-phase clouds. |
英文关键词 | Heterogeneous ice nucleation immersion freezing soot black carbon surface area mixed phase clouds |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000543387400018 |
WOS关键词 | SOOT PHOTOMETER ; MINERAL DUST ; AEROSOL ; DIESEL ; PARAMETERIZATION ; SENSITIVITY ; INSTRUMENT ; ABSORPTION ; DEPENDENCE ; MORPHOLOGY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
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/248891 |
专题 | 气候变化 |
作者单位 | 1.ETH, Inst Atmospher & Climate Sci, Zurich, Switzerland; 2.Finnish Meteorol Inst, Atmospher Composit Unit, Helsinki, Finland; 3.Natl Res Council Canada, Metrol Res Ctr, Ottawa, ON, Canada; 4.City Zurich Environm & Hlth Safety, Air Qual Res Div, Zurich, Switzerland |
推荐引用方式 GB/T 7714 | Kanji, Zamin A.,Welti, Andre,Corbin, Joel C.,et al. Black Carbon Particles Do Not Matter for Immersion Mode Ice Nucleation[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(11). |
APA | Kanji, Zamin A.,Welti, Andre,Corbin, Joel C.,&Mensah, Amewu A..(2020).Black Carbon Particles Do Not Matter for Immersion Mode Ice Nucleation.GEOPHYSICAL RESEARCH LETTERS,47(11). |
MLA | Kanji, Zamin A.,et al."Black Carbon Particles Do Not Matter for Immersion Mode Ice Nucleation".GEOPHYSICAL RESEARCH LETTERS 47.11(2020). |
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