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- fluxes:
- if source grid resolution uniformly >> target grid resolution: TR aave
- otherwise: FV2+CAAS
- state and vector maps:
- ocn→atm: The state map's non-zero pattern must be a superset of the ocn→atm flux map.
- ocn resolution uniformly >> atm resolution: TR aave
- otherwise: FV2+CAAS
- lnd↔atm and atm→ocn
- if source grid resolution uniformly >> target grid resolution (fine-to-coarse): TR ave or intbilin
- if source grid resolution uniformly << target grid resolution (coarse-to-fine): TR bilin or intbilin (bilin slightly faster )
- otherwise: TR intbilin or FV2+CAAS (intbilin slightly faster)
- riv → ocn
- continue to use custom maps generated by E3SM/cime/tools/mapping/gen_mapping_files/runoff_to_ocn
- ocn→atm: The state map's non-zero pattern must be a superset of the ocn→atm flux map.
"FV2+CASSCAAS" refers to the nonlinear approach from /wiki/spaces/COM/pages/3771301899 where an aave and 2nd order FV map are used with Compute-And-Assured-Sum (CAAS) to provide a monotone conservative map that avoids the blocky artifacts of aave maps and is more accurate than aave maps. FV2+CAAS is comparable in accuracy to intbilin, adds conservation, but could be slightly more expensive.
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