Spectral interpolation in SISL shallow-water models on the sphere produces higher accuracy, better mass and energy conservation, and less numerical diffusion than cubic or quintic interpolation on standard test cases.
Yukimoto , Meteorological Research Institute-Earth System Model Version 1 (MRI-ESM1) , Meteorolog
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Spectral interpolation in semi-implicit semi-Lagrangian methods for shallow water equations on the sphere
Spectral interpolation in SISL shallow-water models on the sphere produces higher accuracy, better mass and energy conservation, and less numerical diffusion than cubic or quintic interpolation on standard test cases.