DOI: 10.1007/s00382-012-1609-4
Scopus记录号: 2-s2.0-84886721481
论文题名: Quantitative evaluation of the seasonal variations in climate model cloud regimes
作者: Tsushima Y. ; Ringer M.A. ; Webb M.J. ; Williams K.D.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2013
卷: 41, 期: 2017-09-10 起始页码: 2679
结束页码: 2696
语种: 英语
英文关键词: Climate model
; Cloud feedback
; Cloud metric
; Cloud radiative effect
; Cloud regime
; Seasonal variation
英文摘要: An extended cloud-clustering method to assess the seasonal variation of clouds is applied to five CMIP5 models. The seasonal variation of the total cloud radiative effect (CRE) is dominated by variations in the relative frequency of occurrence of the different cloud regimes. Seasonal variations of the CRE within the individual regimes contribute much less. This is the case for both observations, models and model errors. The error in the seasonal variation of cloud regimes, and its breakdown into mean amplitude and time varying components, are quantified with a new metric. The seasonal variation of the CRE of the cloud regimes is relatively well simulated by the models in the tropics, but less well in the extra-tropics. The stratocumulus regime has the largest seasonal variation of shortwave CRE in the tropics, despite having a small magnitude in the climatological mean. Most of the models capture the temporal variation of the CRE reasonably well, with the main differences between models coming from the variation in amplitude. In the extra-tropics, most models fail to correctly represent both the amplitude and time variation of the CRE of congestus, frontal and stratocumulus regimes. The annual mean climatology of the CRE and its amplitude in the seasonal variation are both underestimated for the anvil regime in the tropics, the cirrus regime and the congestus regime in the extra-tropics. The models in this study that best capture the seasonal variation of the cloud regimes tend to have higher climate sensitivities. © 2012 Crown Copyright. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54747
Appears in Collections: 过去全球变化的重建
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作者单位: Met Office Hadley Centre, FitzRoy Road, Exeter, Devon, EX1 3PB, United Kingdom
Recommended Citation:
Tsushima Y.,Ringer M.A.,Webb M.J.,et al. Quantitative evaluation of the seasonal variations in climate model cloud regimes[J]. Climate Dynamics,2013-01-01,41(2017-09-10)