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• Improved double Fourier series on a sphere and its application to a semi-implicit semi-Lagrangian shallow-water model.

  Author:Hiromasa YoshimuraFrom:Geoscientific Model Development (Vol. 15, Issue 6) Peer-Reviewed

  Mar. 28, 2022312 words Brief article One way to reduce the computational cost of a spectral model using spherical harmonics (SH) is to use double Fourier series (DFS) instead of SH. The transform method using SH usually requires O(N.sup.3) operations, where...