GEOS-Chem "HP" (aka GCHP) represents the next generation of GEOS-Chem with a distributed memory capability designed to enable efficient scaling across many cores, and thus enable finer resolution simulations. GCHP also has the advantage of using a "cubed-sphere" geometry that will enable more accurate transport and eliminate the polar singularity inherent to lat-lon grids.
The following links illustrate the various features of the cubed-sphere geometry:
- Step-by-step guide to creating a cubed-sphere grid
- Comparison of several cubed-sphere grid projections
- Creating a "stretched" cubed-sphere grid (i.e. where one face has a much finer resolution than the others).