Frequency of quasi-geostrophic modes on hexagonal grids
Finite-difference analysis of Rossby modes has been performed for two staggered hexagonal grids. The solutions are compared with those obtained in analytical case and for rectangular grids. The result for one of the selected hexagonal grids better fits to the analytical solution then the results for the other considered grids. The obtained results may contribute to better understanding of the appropriateness of hexagonal grids in atmospheric and oceanographic modeling and numerical computations.
KeywordsVorticity Rossby Wave Rectangular Grid Geostrophic Wind Vorticity Equation
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