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RISInitial Tendencies of Cloud Regimes in the Met Office Unified Model
Publisher: American Meteorological Society
Abstract: The Met Office unified forecast?climate model is used to compare the properties of simulated climatological cloud regimes with those produced in short-range forecasts initialized from operational analyses. The regimes are ...
Time Variation of Effective Climate Sensitivity in GCMs
Publisher: American Meteorological Society
Abstract: Effective climate sensitivity is often assumed to be constant (if uncertain), but some previous studies of general circulation model (GCM) simulations have found it varying as the simulation progresses. This complicates ...
Transient Climate Change in the Hadley Centre Models: The Role of Physical Processes
Publisher: American Meteorological Society
Abstract: A comparison of the response to increasing greenhouse gas concentrations of two versions of the Met Office's (Hadley Centre) coupled atmosphere?ocean model reveals differences that result in large local variations in the ...
The Surface Downwelling Solar Radiation Surplus over the Southern Ocean in the Met Office Model: The Role of Midlatitude Cyclone Clouds
Publisher: American Meteorological Society
Abstract: he authors study the role of clouds in the persistent bias of surface downwelling shortwave radiation (SDSR) in the Southern Ocean in the atmosphere-only version of the Met Office model. The reduction of this bias in the ...
Upstream Cyclone Influence on the Predictability of Block Onsets over the Euro-Atlantic Region
Publisher: American Meteorological Society
Abstract: AbstractAtmospheric blocking has been shown to be a phenomenon that models struggle to predict accurately, particularly the onset of a blocked state following a more zonal flow. This struggle is, in part, due to the lack ...
The Transpose-AMIP II Experiment and Its Application to the Understanding of Southern Ocean Cloud Biases in Climate Models
Publisher: American Meteorological Society
Abstract: he Transpose-Atmospheric Model Intercomparison Project (AMIP) is an international model intercomparison project in which climate models are run in ?weather forecast mode.? The Transpose-AMIP II experiment is run alongside ...
Origins of the Solar Radiation Biases over the Southern Ocean in CFMIP2 Models
Publisher: American Meteorological Society
Abstract: urrent climate models generally reflect too little solar radiation over the Southern Ocean, which may be the leading cause of the prevalent sea surface temperature biases in climate models. The authors study the role of ...
On the Correspondence between Mean Forecast Errors and Climate Errors in CMIP5 Models
Publisher: American Meteorological Society
Abstract: he present study examines the correspondence between short- and long-term systematic errors in five atmospheric models by comparing the 16 five-day hindcast ensembles from the Transpose Atmospheric Model Intercomparison ...
The New Hadley Centre Climate Model (HadGEM1): Evaluation of Coupled Simulations
Publisher: American Meteorological Society
Abstract: A new coupled general circulation climate model developed at the Met Office's Hadley Centre is presented, and aspects of its performance in climate simulations run for the Intergovernmental Panel on Climate Change Fourth ...