GSTDTAP  > 气候变化
DOI10.1029/2019GL086764
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
ISSN0094-8276
EISSN1944-8007
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
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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
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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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