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If we only allow triangles and quads we get convex polygons, but they are less regular:
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Future Plans
We note that the TempestRemap package uses an algorithm that understands both SE and FV grids (Ullrich & Taylor, MWR 2015) and can produce map files directly from the CAM-SE Native grid. These mapping files are more accurate since they take advantage of the SE discretization. If ACME adopts TempestRemap mapping files, we will not need to use the SE dual grid shown above.
Also, the "physics grid" work, when completed, will allow us to run the physics at cell centers of the subcell grid (instead of vertices). It will also allow us to run the physics on a subcell grid with equally spaced subcell centers. Either of these options will mean we would no longer need the SE dual grid.
CAM-FV Grids
We also show some plots of grids used by the Lin-Rood CAM-FV model:
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