DOI: 10.1002/grl.50945
论文题名: Geographically versus dynamically defined boundary layer cloud regimes and their use to evaluate general circulation model cloud parameterizations
作者: Nam C.C.W. ; Quaas J.
刊名: Geophysical Research Letters
ISSN: 0094-8538
EISSN: 1944-8269
出版年: 2013
卷: 40, 期: 18 起始页码: 4951
结束页码: 4956
语种: 英语
英文关键词: boundary layer clouds
; CloudSat
; COSP
; ECHAM5
; radar simulator
; tropical low clouds
Scopus关键词: Atmospheric stability
; Boundary layer clouds
; Cloud parameterizations
; CloudSat
; COSP
; ECHAM5
; General circulation model
; Reflectivity profiles
; Boundary layers
; Radar
; Radar simulators
; Reflection
; Clouds
; boundary layer
; cloud
; CloudSat
; general circulation model
; radar
; reflectivity
; simulator
; stratocumulus
; subsidence
; California
; Hawaii [United States]
; United States
英文摘要: Regimes of tropical low-level clouds are commonly identified according to large-scale subsidence and lower tropospheric stability (LTS). This definition alone is insufficient for the distinction between regimes and limits the comparison of low-level clouds from CloudSat radar observations and the ECHAM5 GCM run with the COSP radar simulator. Comparisons of CloudSat radar cloud altitude-reflectivity histograms for stratocumulus and shallow cumulus regimes, as defined above, show nearly identical reflectivity profiles, because the distinction between the two regimes is dependent upon atmospheric stability below 700 hPa and observations above 1.5 km. Regional subsets, near California and Hawaii, for example, have large differences in reflectivity profiles than the dynamically defined domain; indicating different reflectivity profiles exist under a given large-scale environment. Regional subsets are better for the evaluation of low-level clouds in CloudSat and ECHAM5 as there is less contamination between 2.5 km and 7.5 km from precipitating hydrometeors which obscured cloud reflectivities. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884222013&doi=10.1002%2fgrl.50945&partnerID=40&md5=509a88db3432d4b6262021e4970b5ded
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5802
Appears in Collections: 气候减缓与适应
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作者单位: Max Planck Institute for Meteorology, Hamburg, Germany
Recommended Citation:
Nam C.C.W.,Quaas J.. Geographically versus dynamically defined boundary layer cloud regimes and their use to evaluate general circulation model cloud parameterizations[J]. Geophysical Research Letters,2013-01-01,40(18).