Super-rotation independent of horizontal diffusion reproduced in a Venus GCM

Abstract Horizontal diffusion and resolution are important factors to generate maintain the super-rotation in general circulation model (GCM) because waves which transport angular momentum sensitive them. Here, we investigated how depends on magnitude of horizontal hyper using a Venus atmospheric GCM with medium high resolutions. In both runs, found parameter range where structure fully developed is almost independent diffusion. Spectral analysis shows that unrealistically strong when medium-scale disturbances dissipated by stronger On other hand, artificially weak also realized spurious small-scale accumulated too weak. Graphical