DOI: 10.1002/2014GL060657
论文题名: Microphysical consequences of the spatial distribution of ice nucleation in mixed-phase stratiform clouds
作者: Yang F. ; Ovchinnikov M. ; Shaw R.A.
刊名: Geophysical Research Letters
ISSN: 0094-9962
EISSN: 1944-9693
出版年: 2014
卷: 41, 期: 14 起始页码: 5280
结束页码: 5287
语种: 英语
英文关键词: ice nucleation
; ice number concentration
; ice water content
; mixed-phase clouds
Scopus关键词: Nucleation
; Precipitation (meteorology)
; Spatial distribution
; Ice nucleation
; Ice water content
; Lagrangian tracking
; Microphysical property
; Mixed-phase cloud
; Mixed-phase stratiform cloud
; Number concentration
; Precipitation fluxes
; Ice
; cloud microphysics
; ice crystal
; nucleation
; power law
; spatial distribution
; stratiform cloud
; velocity profile
; water content
英文摘要: Mixed-phase stratiform clouds can persist even with steady ice precipitation fluxes, and the origin and microphysical properties of the ice crystals are of interest. Vapor deposition growth and sedimentation of ice particles along with a uniform volume source of ice nucleation lead to a power law relation between ice water content wi and ice number concentration ni with exponent 2.5. The result is independent of assumptions about the vertical velocity structure of the cloud and is therefore more general than the related expression of Yang et al. (2013). The sensitivity of the wi-ni relationship to the spatial distribution of ice nucleation is confirmed by Lagrangian tracking and ice growth with cloud volume, cloud top, and cloud base sources of ice particles through a time-dependent cloud field. Based on observed wi and ni from Indirect and Semi-Direct Aerosol Campaign, a lower bound of 0.006 m -3 s-1 is obtained for the ice crystal formation rate. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904779842&doi=10.1002%2f2014GL060657&partnerID=40&md5=8e73489cd163e718fc4056be49176cf6
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7226
Appears in Collections: 气候减缓与适应
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作者单位: Atmospheric Sciences Program, Michigan Technological University, Houghton, MI, United States
Recommended Citation:
Yang F.,Ovchinnikov M.,Shaw R.A.. Microphysical consequences of the spatial distribution of ice nucleation in mixed-phase stratiform clouds[J]. Geophysical Research Letters,2014-01-01,41(14).