Applied Physics Laboratory, Johns Hopkins University, Laurel, MD, USA
Model code and software
Supplementary Material for the paper "Azimuthal averaging-reconstruction filtering techniques for finite-difference general circulation models in spherical geometry"T. Dang https://doi.org/10.5281/zenodo.4506273
This paper describes a numerical treatment (ring average) to relax the time step in finite-difference schemes when using spherical and cylindrical coordinates with axis singularities. The ring average is used to develop a high-resolution thermosphere–ionosphere coupled community model. The technique is a significant improvement in space weather modeling capability, and it can also be adapted to more general finite-difference solvers for hyperbolic equations in spherical and polar geometries.
This paper describes a numerical treatment (ring average) to relax the time step in...