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RISTropical Intraseasonal Oscillations Appearing in a GFDL General Circulation Model and FGGE Data. Part II: Structure
Publisher: American Meteorological Society
Abstract: Space-time spectral and filter analyses are made of the structure of the tropical intraseasonal oscillations appearing in a GFDL 30-wavenumber spectral general circulation model and the FGGE IIIb data set. The model's ...
Tropical 40–50- and 25–30-Day Oscillations Appearing in Realistic and Idealized GFDL Climate Models and the ECMWF Dataset
Publisher: American Meteorological Society
Abstract: To clarify differences between the tropical 40?50- and 25?30-day oscillations and to evaluate simulations and various theories, space-time spectrum and filter analyses were performed on a nine-year dataset taken from the ...
Effects of Wave—Wave and Wave-Mean Flow Interactions on the Growth and Maintenance of Transient Planetary Waves in the Presence of a Mean Thermal Restoring Force
Publisher: American Meteorological Society
Abstract: In order to clarify the effects of wave?wave and wave-mean flow interactions on the growth and maintenance of extratropical tropospheric transient waves in the presence of a mean thermal restoring force, numerical experiments ...
United Mechanisms for the Generation of Low- and High-Frequency Tropical Waves. Part I: Control Experiments with Moist Convective Adjustment
Publisher: American Meteorological Society
Abstract: To examine several mechanisms for the generation of low- and high-frequency tropical waves, numerical experiments are conducted using an idealized nine-level R21 spectral model with the original scheme of moist convective ...
The Seasonal Variation of Tropical Transient Planetary Waves Appearing in a GFDL General Circulation Model
Publisher: American Meteorological Society
Abstract: The seasonal variation of tropical transient planetary waves appearing in an 11-layer GFDL general circulation model is investigated. Space-time power spectra are estimated for every month by use of the maximum entropy ...
The Effects of Condensational Heating on Midlatitude Transient Waves in Their Mature Stage: Control Experiments with a GFDL General Circulation model
Publisher: American Meteorological Society
Abstract: The effects of condensational heating on midlatitude transient waves in their mature stage are re-examined by comparing moist and dry GFDL spectral general circulation models, both of which have all ocean surfaces with ...
Nonlinear Energy Transfer between Stationary and Transient Waves Simulated by a GFDL Spectral General Circulation Model
Publisher: American Meteorological Society
Abstract: A wavenumber spectral analysis has been made of the nonlinear energy transfer between the tropospheric stationary (January mean) and transient waves in the midlatitudes simulated by a GFDL 9-level spectral general circulation ...
Tropical Intraseasonal Oscilations Appearing in a GFDL General Circulation Model and FGGE Data. Part I: Phase Propagation
Publisher: American Meteorological Society
Abstract: Space-time spectrum and filter analyses are made of the tropical intraseasonal osciliations in the northern summer appearing in a GFDL 30-wavenumber spectral general circulation model and the FGGE IIIB data. The model ...
Transient Planetary Waves Simulated by GFDL Spectral General Circulation Models. Part II: Effects of Nonlinear Energy Transfer
Publisher: American Meteorological Society
Abstract: In order to study how transient planetary waves in the midlatitude troposphere are maintained, a space-time spectral analysis over a 1-year data set is made of a GFDL spectral general circulation model. It is found that ...
Transient Planetary Waves Simulated by GFDL Spectral General Circulation Models. Part I: Effects of Mountains
Publisher: American Meteorological Society
Abstract: Space-time spectral analysis over a three year data set is made of transient planetary waves simulated by Geophysical Fluid Dynamics Laboratory (GFDL) spectral general circulation models with and without mountains. In both ...