General Circulation Experiments with a Two-Level Quasi-Geostrophic Model Including Nonlinear Interaction between Two Waves and the Mean Flow.
NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
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Long term numerical integrations were performed with a two-level model utilizing the quasi-geostrophic equation set. Friction was incorporated through the vertical derivative of the eddy stress and heating was applied as a linear function of latitude. The long-term interactions between one or two waves in the zonal direction and the mean flow were examined. The stability of the initial mean flow was investigated with linearized equations and the most unstable wave numbers were determined. The nonlinear equations were integrated using the most unstable wave in the initial conditions. 300 day forecasts were made with various values of the heating, beta, wall separation, and wave number. A second wave number was introduced into the experiments in order to determine the most likely wave number for the fully evolved mean flow. Author
- Atmospheric Physics