| DOI: | 10.1175/JCLI-D-11-00427.1
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| Scopus记录号: | 2-s2.0-84859962395
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| 论文题名: | Intraseasonal convective moistening in CMIP3 models |
| 作者: | Xavier P.K.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2012
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| 卷: | 25, 期:8 | | 起始页码: | 2569
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| 结束页码: | 2577
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| 语种: | 英语
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| Scopus关键词: | Baroclinic
; Convective downdrafts
; Coupled Model Intercomparison Project
; Coupled models
; Heavy precipitation
; Model evaluation
; Moisture preconditioning
; Precipitation distribution
; Rainfall regime
; Specific humidity
; Temperature anomaly
; Tropical intraseasonal variability
; Tropical variabilty
; Tropospheric moisture
; Atmospheric humidity
; Moisture
; Parameterization
; Precipitation (chemical)
; Climate change
; atmospheric convection
; baroclinic mode
; climate modeling
; cumulus
; Madden-Julian oscillation
; parameterization
; precipitation (climatology)
; relative humidity
; seasonal variation
; troposphere
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| 英文摘要: | A precise relationship between tropospheric moisture and convection is thought to be a key to the accurate simulation of tropical intraseasonal variability. An evaluation of the precipitation distribution and its fundamental physical relationship with relative humidity (RH) in the 14 climate models that participated in the Coupled Model Intercomparison Project phase 3 (CMIP3) is presented here. Most models tend to reside in a light rainfall regime that largely determines the models' basic state, and the intraseasonal transition toward heavy precipitation is not as gradual as in the observations. Some of the precipitation biases are related to the deficiencies in the representation of the relationship between the precipitation and RH, and the moisture preconditioning ahead of intraseasonal convection. It is also shown that even for models with reasonable baroclinic temperature anomaly structures of the MJO, there are large biases in the intraseasonal specific humidity anomalies, some of which may be related to the uncertainties in representing shallow cumulus, convective downdrafts, and convective detrainment. © 2012 American Meteorological Society. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/52469
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Met Office Hadley Centre, Exeter, United Kingdom
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| Recommended Citation: | |
Xavier P.K.. Intraseasonal convective moistening in CMIP3 models[J]. Journal of Climate,2012-01-01,25(8)
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