Solution of the barotropic vorticity equation (BVE) on a rotating sphere using a point vortex approximation on a set of Lagrangian particles and panels.
The test case is a stationary Rossby-Haurwitz wave; although the fluid particles move, the red-blue pattern of vorticity should remain fixed.
Without remeshing, the particles and panels quickly become distorted and tangled, which leads to a breakdown in the computational method.