globalchange  > 气候减缓与适应
DOI: 10.1175/JCLI-D-17-0277.1
Scopus记录号: 2-s2.0-85043699733
论文题名:
An evaluation of marine boundary layer cloud property simulations in the Community Atmosphere Model using satellite observations: Conventional subgrid parameterization versus CLUBB
作者: Song H.; Zhang Z.; Ma P.-L.; Ghan S.J.; Wang M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期:6
起始页码: 2299
结束页码: 2320
语种: 英语
英文关键词: Climate models ; Cloud parameterizations ; Model comparison ; Model evaluation/performance ; Satellite observations ; Subgrid-scale processes
Scopus关键词: Atmospheric radiation ; Boundary layers ; Climate models ; Clouds ; Parameter estimation ; Parameterization ; Radiometers ; Satellite imagery ; Satellite simulators ; Satellites ; Cloud parameterizations ; Model comparison ; Model evaluation/performance ; Satellite observations ; Sub-grid scale process ; Precipitation (meteorology) ; boundary layer ; cloud microphysics ; computer simulation ; marine atmosphere ; model test ; model validation ; numerical model ; parameter estimation ; performance assessment ; satellite data
英文摘要: This paper presents a satellite-observation-based evaluation of the marine boundary layer (MBL) cloud properties from two Community Atmosphere Model, version 5 (CAM5), simulations, one with the standard parameterization schemes (CAM5-Base) and the other with the Cloud Layers Unified by Binormals scheme (CAM5-CLUBB). When comparing the direct model outputs, the authors find that CAM5-CLUBB produces more MBL clouds, a smoother transition from stratocumulus to cumulus, and a tighter correlation between in-cloud water and cloud fraction than CAM5-Base. In the model-to-observation comparison using the COSP satellite simulators, the authors find that both simulations capture the main features and spatial patterns of the observed cloud fraction from MODIS and shortwave cloud radiative forcing (SWCF) from CERES. However, CAM5-CLUBB suffers more than CAM5-Base from a problem that can be best summarized as "undetectable" clouds (i.e., a significant fraction of simulated MBL clouds are thinner than the MODIS detection threshold). This issue leads to a smaller COSP-MODIS cloud fraction and a weaker SWCF in CAM5-CLUBB than the observations and also CAM5-Base in the tropical descending regions. Finally, the authors compare modeled radar reflectivity with CloudSat observations and find that both simulations, especially CAM5-CLUBB, suffer from an excessive drizzle problem. Further analysis reveals that the subgrid precipitation enhancement factors in CAM5-CLUBB are unrealistically large, which makes MBL clouds precipitate too excessively, and in turn results in too many undetectable thin clouds. © 2018 American Meteorological Society.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111653
Appears in Collections:气候减缓与适应

Files in This Item:

There are no files associated with this item.


作者单位: Joint Center for Earth Systems Technology, University of Maryland, Baltimore County, Baltimore, MD, United States; Physics Department, University of Maryland, Baltimore County, Baltimore, MD, United States; Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, United States; Institute for Climate and Global Change Research, Nanjing University, Nanjing, China; School of Atmospheric Sciences, Nanjing University, Nanjing, China

Recommended Citation:
Song H.,Zhang Z.,Ma P.-L.,et al. An evaluation of marine boundary layer cloud property simulations in the Community Atmosphere Model using satellite observations: Conventional subgrid parameterization versus CLUBB[J]. Journal of Climate,2018-01-01,31(6)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Song H.]'s Articles
[Zhang Z.]'s Articles
[Ma P.-L.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Song H.]'s Articles
[Zhang Z.]'s Articles
[Ma P.-L.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Song H.]‘s Articles
[Zhang Z.]‘s Articles
[Ma P.-L.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.