DOI: 10.1002/2016GL068922
论文题名: A trajectory-based classification of ERA-Interim ice clouds in the region of the North Atlantic storm track
作者: Wernli H. ; Boettcher M. ; Joos H. ; Miltenberger A.K. ; Spichtinger P.
刊名: Geophysical Research Letters
ISSN: 0094-9610
EISSN: 1944-9341
出版年: 2016
卷: 43, 期: 12 起始页码: 6657
结束页码: 6664
语种: 英语
英文关键词: cirrus clouds
; ice clouds
; storm track
; trajectories
Scopus关键词: Ice
; Liquids
; Storms
; Trajectories
; Backward trajectory
; Cirrus clouds
; Ice clouds
; Ice water content
; Relative frequencies
; Storm track
; Trajectory segments
; Type classifications
; Clouds
英文摘要: A two-type classification of ice clouds (cirrus) is introduced, based on the liquid and ice water content, LWC and IWC, along air parcel backward trajectories from the clouds. In situ cirrus has no LWC along the trajectory segment containing IWC; it forms via nucleation from the gas phase. In contrast, liquid-origin cirrus has both LWC and IWC along their backward trajectories; it forms via lifting from the lower troposphere and freezing of mixed-phase clouds. This classification is applied to 12 years of ERA-Interim ice clouds in the North Atlantic region. Between 400 and 500 hPa more than 50% are liquid-origin cirrus, whereas this frequency decreases strongly with altitude (<10% at 200 hPa). The relative frequencies of the two categories vary only weakly with season. More than 50% of in situ cirrus occur on top of liquid-origin cirrus, indicating that they often form in response to the strong lifting accompanying the formation of liquid-origin cirrus. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977561791&doi=10.1002%2f2016GL068922&partnerID=40&md5=dc5c23bb4f92a1b5220b24a55429c28b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10573
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: Institute for Atmospheric and Climate Science, ETH Zurich, Zurich, Switzerland
Recommended Citation:
Wernli H.,Boettcher M.,Joos H.,et al. A trajectory-based classification of ERA-Interim ice clouds in the region of the North Atlantic storm track[J]. Geophysical Research Letters,2016-01-01,43(12).