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RISUpdating Experiments with a Simple Barotropic Model
Publisher: American Meteorological Society
Abstract: Using a 12-component spectral model derived from the barotropic vorticity equation, updating experiments were performed at intervals ranging from one to six time steps, where one time step was equivalent to about 2.4 hr. ...
A Description of the GFDL Global Spectral Model
Publisher: American Meteorological Society
Abstract: A multi-level, global, spectral transform model of the atmosphere, based upon spherical harmonies, has been developed at GFDL. The basic model has nine sigma levels in the vertical and rhomboidal spectral truncation at ...
Medium Range Prediction by a GFDL Global Spectral Model: Results for Three Winter Cases and Sensitivity to Dissipation
Publisher: American Meteorological Society
Abstract: A preliminary evaluation is made of the medium range predictive capability of a GFDL global spectral model of the atmosphere, based upon three winter blocking cases. Analogous forecasts by a GFDL global grid point model ...
Evaluating the Potential Predictive Utility of Ensemble Forecasts
Publisher: American Meteorological Society
Abstract: A method is presented for determining when an ensemble of model forecasts has the potential to provide some useful information. An ensemble forecast of a particular scale quantity is said to have potential predictive utility ...
Reproducible Forced Modes in AGCM Ensemble Integrations and Potential Predictability of Atmospheric Seasonal Variations in the Extratropics
Publisher: American Meteorological Society
Abstract: An approach to assess the potential predictability of the extratropical atmospheric seasonal variations in an ensemble of atmospheric general circulation model (AGCM) integrations has been proposed in this study by isolating ...
Present-Day Capabilities of Numerical and Statistical Models for Atmospheric Extratropical Seasonal Simulation and Prediction
Publisher: American Meteorological Society
Abstract: A statistical model and extended ensemble integrations of two atmospheric general circulation models (GCMs) are used to simulate the extratropical atmospheric response to forcing by observed SSTs for the years 1980 through ...
A Predictable AMO-Like Pattern in the GFDL Fully Coupled Ensemble Initialization and Decadal Forecasting System
Publisher: American Meteorological Society
Abstract: he decadal predictability of sea surface temperature (SST) and 2-m air temperature (T2m) in the Geophysical Fluid Dynamics Laboratory (GFDL) decadal hindcasts, which are part of the Fifth Coupled Model Intercomparison ...
Seasonal Predictability of Extratropical Storm Tracks in GFDL’s High-Resolution Climate Prediction Model
Publisher: American Meteorological Society
Abstract: he seasonal predictability of extratropical storm tracks in the Geophysical Fluid Dynamics Laboratory?s (GFDL)?s high-resolution climate model has been investigated using an average predictability time analysis. The leading ...
Improved Seasonal Prediction of Temperature and Precipitation over Land in a High-Resolution GFDL Climate Model
Publisher: American Meteorological Society
Abstract: his study demonstrates skillful seasonal prediction of 2-m air temperature and precipitation over land in a new high-resolution climate model developed by the Geophysical Fluid Dynamics Laboratory and explores the possible ...
GFDL's CM2 Global Coupled Climate Models. Part I: Formulation and Simulation Characteristics
Publisher: American Meteorological Society
Abstract: The formulation and simulation characteristics of two new global coupled climate models developed at NOAA's Geophysical Fluid Dynamics Laboratory (GFDL) are described. The models were designed to simulate atmospheric and ...