Use grids rather than meshes?

[aekiss]

Perhaps not a high priority, but at some point we may need to change from meshes to (auto-generated?) grids as discussed in ACCESS-NRI/access-om3-configs#5 and #36 (comment), because meshes are only supported in FMS1, not FMS2.

[anton-seaice]

Grids do not appear to normally include grid cell area, which might make this challenging to implement.

http://earthsystemmodeling.org/docs/release/latest/ESMF_refdoc/node3.html#SECTION03028300000000000000

(e.g. https://github.com/ESCOMP/CICE/blob/6449f40c41aa1a5c00096696202d7bd7ebd2a69a/cicecore/drivers/nuopc/cmeps/ice_mesh_mod.F90#L369C32-L369C42)

Future edit - ESMF is quite good at calculated areas and doesn't actually load the mesh_areas anyway.

I still wouldn't change to grids because the mesh format seems the most tested format in ESMF and would support a possible adaptive mesh in WW3 (I think)

[anton-seaice]

ACCESS-NRI/access-om3-configs#5 and #36 (comment), because meshes are only supported in FMS1, not FMS2.

I just found this old note ... this doesn't make sense to me. Doesn't FMS use the mom supergrid file? And the meshfile we are talking about is the mediator's mesh/grid ?

@dougiesquire ?

[dougiesquire]

Yeah, I don't think this is valid anymore. We are using FMS2. I'll close this, but @aekiss feel free to reopen if I've forgotten or am missing something