Development of a three dimensional numerical modeling to study the thermodynamics of wind-driven currents
We have developed a basic three-dimensional finite difference hydrodynamic oceanic model using baroclinic primitive equations based on the earth's spherical coordinate modified by vertical sigma coordinate with eleven levels equivalent to five layers to study the thermodynamics of wind-driven currents. In this basic model, we consider an enclosed rectangle area, with constant depth of 120 m. We have simulated the horizontal velocity fields, salinity and temperature distributions by forcing the model with the steady bellowing wind over the area for four days with the speed of 10 m/s and direction . According to the Rossby number of the order of one tenth thousands, the large scale processes are dominated in the middle of such basins.The salinity and temperature of the layers are changed due to the diffusion and convection terms in the salinity and temperature equations, respectively.
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