DOI: 10.1175/JCLI-D-11-00152.1
Scopus记录号: 2-s2.0-84858606867
论文题名: Response of upper clouds in global warming experiments obtained using a global nonhydrostatic model with explicit cloud processes
作者: Satoh M. ; Iga S.-I. ; Tomita H. ; Tsushima Y. ; Noda A.T.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 6 起始页码: 2178
结束页码: 2191
语种: 英语
Scopus关键词: Climate condition
; Climate variability
; Cloud cover
; Cloud microphysics
; Cloud process
; Conceptual model
; Convective mass flux
; Ice particles
; Ice water paths
; Nonhydrostatic model
; Primary factors
; Sea surface temperature (SST)
; Vertical profile
; Climatology
; Clouds
; Experiments
; Global warming
; Mass transfer
; Physics
; Subsidence
; Tropics
; Climate models
; climate effect
; climate variation
; cloud cover
; cloud microphysics
; convective system
; experimental study
; global warming
; marine atmosphere
; relative humidity
; sea surface temperature
英文摘要: Using a global nonhydrostatic model with explicit cloud processes, upper-cloud changes are investigated by comparing the present climate condition under the perpetual July setting and the global warming condition, in which the sea surface temperature (SST) is raised by 2°. The sensitivity of the upper-cloud cover and the ice water path (IWP) are investigated through a set of experiments. The responses of convective mass flux and convective areas are also examined, together with those of the large-scale subsidence and relative humidity in the subtropics. The responses of the IWP and the upper-cloud cover are found to be opposite; that is, as the SST increases, the IWP averaged over the tropics decreases, whereas the upper-cloud cover in the tropics increases. To clarify the IWP response, a simple conceptual model is constructed. The model consists of three columns of deep convective core, anvil, and environmental subsidence regions. The vertical profiles of hydrometers are predicted with cloud microphysics processes and kinematically prescribed circulation. The reduction in convective mass flux is found to be a primary factor in the decrease of the IWP under the global warming condition. Even when a different and more comprehensive cloud microphysics scheme is used, the reduction in the IWP due to the mass flux change is also confirmed. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52519
Appears in Collections: 气候变化事实与影响
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作者单位: Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Japan; Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan; RIKEN Advanced Institute for Computational Science, Hyogo, Japan; Met Office Hadley Centre, Exeter, United Kingdom
Recommended Citation:
Satoh M.,Iga S.-I.,Tomita H.,et al. Response of upper clouds in global warming experiments obtained using a global nonhydrostatic model with explicit cloud processes[J]. Journal of Climate,2012-01-01,25(6)