| DOI: | 10.1002/2015GL065733
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| 论文题名: | Revisiting ice nucleation from precipitation samples |
| 作者: | Petters M.D.; Wright T.P.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9574
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| EISSN: | 1944-9305
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| 出版年: | 2015
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| 卷: | 42, 期:20 | | 起始页码: | 8758
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| 结束页码: | 8766
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| 语种: | 英语
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| 英文关键词: | aerosol-cloud-climate interaction
; biological ice nuclei
; heterogeneous ice nucleation
; mixed-phase clouds
; precipitation
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| Scopus关键词: | Nucleation
; Precipitation (chemical)
; Precipitation (meteorology)
; Aerosol clouds
; Geographical locations
; Ice nucleation
; Ice nuclei
; Mixed-phase cloud
; Orders of magnitude
; Particle concentrations
; Precipitation samples
; Ice
; climate conditions
; cloud water
; concentration (composition)
; cumulus
; estimation method
; heterogeneity
; ice crystal
; nucleation
; precipitation (climatology)
; sensitivity analysis
; spectrum
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| 英文摘要: | An emerging and unsolved question is the sensitivity of cloud processes, precipitation, and climate to the atmospheric ice nucleus spectrum. This work revisits estimation of atmospheric ice-nucleating particle concentration derived from cloud water and precipitation samples representing a wide range of geographical locations, seasons, storm systems, precipitation types, instruments, concentrations, and temperatures. Concentrations of ice-nucleating particles are shown to vary over 10 orders of magnitude. High variability is observed in the -5°C to -12°C range which is suggested to be biologically derived nuclei whose life cycle is associated with intermittent source and efficient sink processes. The highest ever observed nucleus concentrations at -8°C are 3 orders of magnitude lower than observed ice crystal concentrations in tropical cumuli at the same temperature. The observed upper and lower limits of the nucleus spectrum provide a possible constraint on minimum enhancement factors for secondary ice formation processes. Key Points New measurements of ice-nucleating particle in snow, sleet, and rainwater samples Nucleus concentration varies over 10 orders of magnitude between -5 and -38°C Ice nucleus spectrum shows high variability between -5 and -12°C © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946605459&doi=10.1002%2f2015GL065733&partnerID=40&md5=8cad9fed6d30e264810fe5361324ac58
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9189
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Department of Marine Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC, United States
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| Recommended Citation: | |
Petters M.D.,Wright T.P.. Revisiting ice nucleation from precipitation samples[J]. Geophysical Research Letters,2015-01-01,42(20).
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