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DOI | 10.1029/2018JD028338 |
Background Free-Tropospheric Ice Nucleating Particle Concentrations at Mixed-Phase Cloud Conditions | |
Lacher, Larissa1,2; DeMott, Paul J.3; Levin, Ezra J. T.3; Suski, Kaitlyn J.3,4; Boose, Yvonne1,5; Zipori, Assaf6,7; Herrmann, Erik8; Bukowiecki, Nicolas8; Steinbacher, Martin9; Gute, Ellen10; Abbatt, Jonathan P. D.10; Lohmann, Ulrike1; Kanji, Zamin A.1 | |
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:10506-10525 |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland; Germany; USA; Israel; Canada |
英文摘要 | Clouds containing ice are vital for precipitation formation and are important in determining the Earth's radiative budget. However, primary formation of ice in clouds is not fully understood. In the presence of ice nucleating particles (INPs), the phase change to ice is promoted, but identification and quantification of INPs in a natural environment remains challenging because of their low numbers. In this paper, we quantify INP number concentrations in the free troposphere (FT) as measured at the High Altitude Research Station Jungfraujoch (JFJ), during the winter, spring, and summer of the years 2014-2017. INPs were measured at conditions relevant for mixed-phase cloud formation at T=241/242 K. To date, this is the longest timeline of semiregular measurements akin to online INP monitoring at this site and sampling conditions. We find that INP concentrations in the background FT are on average capped at 10/stdL (liter of air at standard conditions [T=273 K and p=1013 hPa]) with an interquartile range of 0.4-9.6/stdL, as compared to measurements during times when other air mass origins (e.g., Sahara or marine boundary layer) prevailed. Elevated concentrations were measured in the field campaigns of 2016, which might be due to enhanced influence from Saharan dust and marine boundary layer air arriving at the JFJ. The upper limit of INP concentrations in the background FT is supported by measurements performed at similar conditions, but at different locations in the FT, where we find INP concentrations to be below 13/stdL most of the time. |
英文关键词 | atmospheric ice nucleation mixed-phase clouds free troposphere |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447807300028 |
WOS关键词 | AEROSOL-SIZE DISTRIBUTION ; ALPINE SITE JUNGFRAUJOCH ; FLOW DIFFUSION CHAMBER ; ATMOSPHERIC AEROSOLS ; SEASONAL VARIABILITY ; CHEMICAL-COMPOSITION ; DESERT DUST ; NUCLEI ; IMMERSION ; AIR |
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/33534 |
专题 | 气候变化 |
作者单位 | 1.ETHZ, Inst Atmospher & Climate Sci, Zurich, Switzerland; 2.KIT, Atmospher Aerosol Res, Inst Meteorol & Climate Res, Karlsruhe, Germany; 3.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA; 4.Pacific Northwest Natl Lab, Richland, WA USA; 5.German Aerosp Ctr, Inst Atmospher Phys, Oberpfaffenhofen, Germany; 6.Hebrew Univ Jerusalem, Inst Earth Sci, Jerusalem, Israel; 7.Weizmann Inst Sci, Dept Earth & Planetary Sci, Rehovot, Israel; 8.Paul Scherrer Inst, Lab Atmospher Chem, Villigen, Switzerland; 9.Empa, Swiss Fed Labs Mat Sci & Technol, Dubendorf, Switzerland; 10.Univ Toronto, Dept Chem, Toronto, ON, Canada |
推荐引用方式 GB/T 7714 | Lacher, Larissa,DeMott, Paul J.,Levin, Ezra J. T.,et al. Background Free-Tropospheric Ice Nucleating Particle Concentrations at Mixed-Phase Cloud Conditions[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(18):10506-10525. |
APA | Lacher, Larissa.,DeMott, Paul J..,Levin, Ezra J. T..,Suski, Kaitlyn J..,Boose, Yvonne.,...&Kanji, Zamin A..(2018).Background Free-Tropospheric Ice Nucleating Particle Concentrations at Mixed-Phase Cloud Conditions.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(18),10506-10525. |
MLA | Lacher, Larissa,et al."Background Free-Tropospheric Ice Nucleating Particle Concentrations at Mixed-Phase Cloud Conditions".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.18(2018):10506-10525. |
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