DOI: 10.1175/JCLI-D-13-00376.1
Scopus记录号: 2-s2.0-84898020225
论文题名: Stratocumulus clouds in Southeastern pacific simulated by eight CMIP5-CFMIP global climate models
作者: Lin J.-L. ; Qian T. ; Shinoda T.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 8 起始页码: 3000
结束页码: 3022
语种: 英语
Scopus关键词: Atmospheric radiation
; Atmospheric temperature
; Climate models
; Clouds
; Oceanography
; Boundary layer turbulence
; Cloud radiative forcing
; Coupled Model Intercomparison Project
; Global climate model
; Long-term observations
; Sea surface temperature (SST)
; Temperature inversions
; Temperature structure
; Computer simulation
; air temperature
; climate modeling
; cloud cover
; cloud radiative forcing
; global climate
; sea surface temperature
; stratocumulus
; turbulent boundary layer
; Pacific Ocean
; Pacific Ocean (Southeast)
英文摘要: This study examines the stratocumulus clouds and associated cloud feedback in the southeast Pacific (SEP) simulated by eight global climate models participating in phase 5 of the Coupled Model Intercomparison Project (CMIP5) and Cloud Feedback Model Intercomparison Project (CFMIP) using long-term observations of clouds, radiative fluxes, cloud radiative forcing (CRF), sea surface temperature (SST), and large-scale atmosphere environment. The results show that the state-of-the-art global climate models still have significant difficulty in simulating the SEP stratocumulus clouds and associated cloud feedback. Comparing with observations, the models tend to simulate significantly less cloud cover, higher cloud top, and a variety of unrealistic cloud albedo. The insufficient cloud cover leads to overly weak shortwave CRF and net CRF. Only two of the eight models capture the observed positive cloud feedback at subannual to decadal time scales. The cloud and radiation biases in the models are associated with 1) model biases in large-scale temperature structure including the lack of temperature inversion, insufficient lower troposphere stability (LTS), and insufficient reduction of LTS with local SST warming, and 2) improper model physics, especially insufficient increase of low cloud cover associated with larger LTS. The two models that arguably do best at simulating the stratocumulus clouds and associated cloud feedback are the only ones using cloud-top radiative cooling to drive boundary layer turbulence. © 2014 American Meteorological Society. 资助项目: NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51193
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Geography, The Ohio State University, Columbus, OH, United States; Department of Physical and Environmental Sciences, Texas A and M University-Corpus Christi, Corpus Christi, TX, United States
Recommended Citation:
Lin J.-L.,Qian T.,Shinoda T.. Stratocumulus clouds in Southeastern pacific simulated by eight CMIP5-CFMIP global climate models[J]. Journal of Climate,2014-01-01,27(8)