Vertical diffusion and cloud scheme coupling to the Charney–Phillips vertical grid in GRAPES global forecast system

Spatial aspects of the physics–dynamics coupling in the Global and Regional Assimilation and Prediction System (GRAPES) for global medium‐range numerical weather prediction (GRAPES_GFS) are studied. As a Charney–Philips (CP) grid is used for the dynamics but all physical processes are calculated on a Lorenz grid in GRAPES_GFS V2.2 and its previous versions, interpolation has to be used for potential temperature and moisture between full and half...