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- The dycore needs these data at GLL points, and the physics needs them at FV cell centers.
- In addition, physics parameterizations need SGH, SGH30, and some other fields computed offline on the FV grid.
- We require that the map of the GLL phi_s data be equal to the FV phi_s data.
- We want to run HOMME's smoother on GLL phi_s.
- We do not want to use the GLL dual grid, which requires using an unscalable tool; we want to use only the FV dual grid, which can be created using, e.g., TempestRemap in a matter of seconds.
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