In the regional MPAS solver relaxation-zone filtering, increase the magnitude of the divergent portion of the Laplacian for the horizontal velocity by a factor of 4 relative to the vorticity component of the Laplacian. This increases the robustness of the regional configruation as demonstated in CONUS test forecasts performed by NOAA/NSSL in winter/spring 2023. Change Dynamics 1.1 for Version 8 release.
In the regional MPAS solver relaxation-zone filtering, increase the magnitude of the divergent portion of the Laplacian for the horizontal velocity by a factor of 4 relative to the vorticity component of the Laplacian. This increases the robustness of the regional configruation as demonstated in CONUS test forecasts performed by NOAA/NSSL in winter/spring 2023. Change Dynamics 1.1 for Version 8 release.