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Integration of barotropic vorticity equation over spherical geodesic grid using multilevel adaptive wavelet collocation method
Authors:Ratikanta Behera  Mani Mehra
Affiliation:Department of Mathematics, Indian Institute of Technology Delhi, New Delhi 110016, India
Abstract:
In this paper, we present the multilevel adaptive wavelet collocation method for solving non-divergent barotropic vorticity equation over spherical geodesic grid. This method is based on multi-dimensional second generation wavelet over a spherical geodesic grid. The method is more useful in capturing, identifying, and analyzing local structure [1] than any other traditional methods (i.e. finite difference, spectral method), because those methods are either full or partial miss important phenomena such as trends, breakdown points, discontinuities in higher derivatives of the solution. Wavelet decomposition is used for interpolation and adaptive grid refinement on different levels.
Keywords:Wavelets   Barotropic equation   Multilevel methods
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