globalchange  > 气候减缓与适应
DOI: 10.1002/2017JD027831
Scopus记录号: 2-s2.0-85047447651
论文题名:
Is Black Carbon an Unimportant Ice-Nucleating Particle in Mixed-Phase Clouds?
作者: Vergara-Temprado J.; Holden M.A.; Orton T.R.; O'Sullivan D.; Umo N.S.; Browse J.; Reddington C.; Baeza-Romero M.T.; Jones J.M.; Lea-Langton A.; Williams A.; Carslaw K.S.; Murray B.J.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:8
起始页码: 4273
结束页码: 4283
语种: 英语
英文关键词: aerosol ; black carbon ; clouds ; global modeling ; ice nucleation ; mixed-phase clouds
Scopus关键词: aerosol ; ambient air ; atmospheric modeling ; black carbon ; cloud ; experimental study ; global perspective ; marine environment ; nucleation ; supercooling
英文摘要: It has been hypothesized that black carbon (BC) influences mixed-phase clouds by acting as an ice-nucleating particle (INP). However, the literature data for ice nucleation by BC immersed in supercooled water are extremely varied, with some studies reporting that BC is very effective at nucleating ice, whereas others report no ice-nucleating ability. Here we present new experimental results for immersion mode ice nucleation by BC from two contrasting fuels (n-decane and eugenol). We observe no significant heterogeneous nucleation by either sample. Using a global aerosol model, we quantify the maximum relative importance of BC for ice nucleation when compared with K-feldspar and marine organic aerosol acting as INP. Based on the upper limit from our laboratory data, we show that BC contributes at least several orders of magnitude less INP than feldspar and marine organic aerosol. Representations of its atmospheric ice-nucleating ability based on older laboratory data produce unrealistic results when compared against ambient observations of INP. Since BC is a complex material, it cannot be unambiguously ruled out as an important INP species in all locations at all times. Therefore, we use our model to estimate a range of values for the density of active sites that BC particles must have to be relevant for ice nucleation in the atmosphere. The estimated values will guide future work on BC, defining the required sensitivity of future experimental studies. ©2018. The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114070
Appears in Collections:气候减缓与适应

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作者单位: Institute for Climate and Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, United Kingdom; Now at Institute for Atmospheric and Climate Science, ETH Zurich, Zurich, Switzerland; School of Chemistry, University of Leeds, Leeds, United Kingdom; Now at Lloyd's of London, London, United Kingdom; Now at Institute for Meteorology and Climate Research-Atmospheric Aerosol Research, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, Germany; Now at School of Geography, University of Exeter, Penryn, Cornwall, United Kingdom; Escuela de Ingeniería Industrial de Toledo, Universidad de Castilla-La Mancha, Toledo, Spain; School of Chemical and Process Engineering, University of Leeds, Leeds, United Kingdom; Now at School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester, United Kingdom

Recommended Citation:
Vergara-Temprado J.,Holden M.A.,Orton T.R.,et al. Is Black Carbon an Unimportant Ice-Nucleating Particle in Mixed-Phase Clouds?[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(8)
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