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RISEnergetics of a “Minor Breakdown” of the Stratospheric Polar Night Vortex
Publisher: American Meteorological Society
Abstract: An investigation of the kinetic energy budget of a ?minor breakdown? of the stratospheric polar night vortex is performed. The computation covers the period 15 November-15 December 1958, for the 100?50 mb layer north of ...
On the Maintenance of the Polar Front jet Stream
Publisher: American Meteorological Society
Abstract: A calculation of the mean transverse circulation about the polar front jet stream is performed by using a diagnostic balance, ?-equation method. The results show a thermally-direct mean transverse circulation about the jet ...
General Circulation Model Simulation of the Semiannual Oscillation of the Tropical Middle Atmosphere
Publisher: American Meteorological Society
Abstract: A study has been made of the evolution of the zonal-mean zonal wind and temperature in a multiyear integration of the 40-level, 3° ? 3.6° resolution ?SKYHI? general circulation model (GCM) that has been developed at GFDL. ...
Simulation of Seasonal and Interhemispheric Variations in the Stratospheric Circulation
Publisher: American Meteorological Society
Abstract: This paper describes the stratosphere as simulated by the time integration of a global model of the atmosphere as developed at the Geophysical Fluid Dynamics Laboratory of NOAA. It is shown that the model is capable of ...
The Zonally Averaged Transport Characteristics of the GFDL General Circulation/Transport Model
Publisher: American Meteorological Society
Abstract: The GFDL general circulation/tracer model has been used to generate the transport coefficients required in two-dimensional (zonally averaged) transport formulations. This was done by assuming a flux-gradient relationship ...
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 ...
A Method for Calculating More Accurate Budget Analyses of “Sigma” Coordinate Model Results
Publisher: American Meteorological Society
Abstract: The so-called ?sigma? coordinate system has seen increasing use in numerical models developed for general circulation and climate simulation, as well as for weather forecasting. Concurrently, there is an increasing demand ...
Transport, Radiative, and Dynamical Effects of the Antarctic Ozone Hole: A GFDL “SKYHI” Model Experiment
Publisher: American Meteorological Society
Abstract: The GFDL ?SKYHI? general circulation model has been used to simulate the effect of the Antarctic ?ozone hole? phenomenon on the radiative and dynamical environment of the lower stratosphere. Both the polar ozone destruction ...
Three-Dimensional Tracer Structure and Behavior as Simulated in Two Ozone Precursor Experiments
Publisher: American Meteorological Society
Abstract: The GFDL 11-level general circulation/tracer model is used for two experiments designed to prepare the way for a self-consistent model of atmospheric ozone. The first experiment invokes a very simple condition at the top ...
Eliassen-Palm Diagnostics of Wave-Mean Flow Interaction in the GFDL "SKYHI" General Circulation Model
Publisher: American Meteorological Society
Abstract: The Eliassen-Palm flux is important in analytical studies of small-amplitude waves where it provides a powerful and elegant tool for the description of wave propagation in mean zonal shear flows, as well as for analysis ...