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Simple test calculations concerning finite element applications to numerical weather prediction
Authors:J Steppeler
Abstract:Different finite element schemes are investigated with respect to their application in numerical weather prediction. Different methods of staggering of variables are considered. The tests concern the accuracy of a Rossby wave prediction and the generation of noise in a geostrophic adjustment process. Theoretical results concerning the noise level of different schemes are confirmed by computations with a one-dimensional model. Favourable results were obtained by hybrid schemes, using different Galerkin treatments for different terms of the dynamic equations.
Keywords:Finite elements  Atmospheric flow  Petrov–  Galerkin  Staggered grids  Hybrid scheme
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