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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 ...
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 ...
Space-Time Spectral Analysis of Mid-Latitude Disturbances Appearing in a GFDL General Circulation Model
Publisher: American Meteorological Society
Abstract: A space-time spectral analysis is applied to the Northern Hemisphere winter of an 11-layer GFDL general circulation model with seasonal variation. A statistical study is made of the stationary and transient ultra-long waves ...
The Generation of Equatorial Transient Planetary Waves: Control Experiments with a GFDL General Circulation Model
Publisher: American Meteorological Society
Abstract: In order to study the generation of transient planetary waves in the tropics, the effects of topography, midlatitude disturbances and condensational heat are eliminated one by one from a GFDL general circulation model ...
Interactions between Gravity Waves and Planetary-Scale Flow Simulated by the GFDL “SKYHI” General Circulation Model
Publisher: American Meteorological Society
Abstract: In order to study interactions between gravity waves and planetary flow in the middle atmosphere, a 3° latitude by 3.6° longitude version of the 40-level GFDL ?SKYHI? general circulation model is analyzed using bihourly ...