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Simple test calculations concerning finite element applications to numerical weather prediction
Author(s) -
Steppeler J.
Publication year - 1990
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.1650110207
Subject(s) - numerical weather prediction , finite element method , rossby wave , computation , mathematics , simple (philosophy) , noise (video) , geostrophic wind , galerkin method , computer science , meteorology , algorithm , geology , engineering , structural engineering , mechanics , physics , artificial intelligence , philosophy , oceanography , epistemology , image (mathematics)
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.