Abstract
The notion of FDs on sparse grids is introduced. It means that from a regular distribution of grid points not all are used, which offers the opportunity to make models more efficient for the same resolution. This section aims at transferring some of the 1D schemes defined in Chapter “Local-Galerkin Schemes in 1D” to two dimensions. There is no way the most general L-Galerkin scheme or a class of such schemes can be presented. The number of possibilities is too large. So just examples are presented to show how the schemes work. In particular, most examples are 2D. While the complexity of computer programs normally increases substantially when going to 3D, it is often obvious how to proceed from 2D to 3D.
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Steppeler, J., Li, J. (2022). Finite Difference Schemes on Sparse and Full Grids. In: Mathematics of the Weather. Springer Atmospheric Sciences. Springer, Cham. https://doi.org/10.1007/978-3-031-07238-3_5
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