DOI: 10.1002/2016GL069531
论文题名: Effect of cloud-scale vertical velocity on the contribution of homogeneous nucleation to cirrus formation and radiative forcing
作者: Shi X. ; Liu X.
刊名: Geophysical Research Letters
ISSN: 0094-9657
EISSN: 1944-9388
出版年: 2016
卷: 43, 期: 12 起始页码: 6588
结束页码: 6595
语种: 英语
英文关键词: cirrus clouds
Scopus关键词: Atmospheric radiation
; Clouds
; Ice
; Velocity
; Cirrus clouds
; Cloud radiative forcing
; Community atmosphere model
; Ensemble simulation
; General circulation model
; Heterogeneous nucleation
; Homogeneous nucleation
; Relative contribution
; Nucleation
; atmospheric modeling
; cirrus
; cloud microphysics
; cloud radiative forcing
; heterogeneity
; ice crystal
; nucleation
; vertical distribution
英文摘要: Ice nucleation is a critical process for the ice crystal formation in cirrus clouds. The relative contribution of homogeneous nucleation versus heterogeneous nucleation to cirrus formation differs between measurements and predictions from general circulation models. Here we perform large-ensemble simulations of the ice nucleation process using a cloud parcel model driven by observed vertical motions and find that homogeneous nucleation occurs rather infrequently, in agreement with recent measurement findings. When the effect of observed vertical velocity fluctuations on ice nucleation is considered in the Community Atmosphere Model version 5, the relative contribution of homogeneous nucleation to cirrus cloud occurrences decreases to only a few percent. However, homogeneous nucleation still has strong impacts on the cloud radiative forcing. Hence, the importance of homogeneous nucleation for cirrus cloud formation should not be dismissed on the global scale. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977491513&doi=10.1002%2f2016GL069531&partnerID=40&md5=a90b1ed7f1b6e0484d223dad183c02fe
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10620
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: School of Atmospheric Science, Nanjing University of Information Science and Technology, Nanjing, China
Recommended Citation:
Shi X.,Liu X.. Effect of cloud-scale vertical velocity on the contribution of homogeneous nucleation to cirrus formation and radiative forcing[J]. Geophysical Research Letters,2016-01-01,43(12).