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Add new IcoswISC30E3r4 ocean and sea-ice mesh #6078

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@xylar xylar commented Nov 20, 2023

Long name: IcoswISC30L64E3SMv3r4

This nearly uniform 30 km mesh is the dual mesh of a subdivided icosahedron (Icos). The mesh is with Ice-Shelf Cavities (wISC) around Antarctica and has 64 vertical layers. It includes smoothing of bathymetry and ice-shelf topography over ~100 km.

This mesh is a candidate for the E3SM v3 (E3) low res mesh. It is revision 4 (r4) of the mesh.

The mesh was created using compass, and is being reviewed there in this PR:
MPAS-Dev/compass#734
As soon as the PR is merged, the code used to produce it will be at this tag:
https://github.com/MPAS-Dev/compass/releases/tag/mesh_IcoswISC30E3r4

The mesh and simulation results (to follow) are been reviewed and approved here:
https://acme-climate.atlassian.net/wiki/spaces/OO/pages/4006576129/Review+IcoswISC30E3r4

A B-case will begin shortly and analysis will be posted here and on the review page as soon as it is available.

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xylar commented Nov 20, 2023

A screenshot of the smoothed bathymetry:
bathy_smooth

Comment on lines -3979 to 4067
<gridmap atm_grid="T62" ocn_grid="ECwISC30to60E3r2">
<map name="ATM2OCN_FMAPNAME">cpl/gridmaps/T62/map_T62_to_ECwISC30to60E3r2_traave.20231018.nc</map>
<map name="ATM2OCN_SMAPNAME">cpl/gridmaps/T62/map_T62_to_ECwISC30to60E3r2-nomask_trintbilin.20231018.nc</map>
<map name="ATM2OCN_VMAPNAME">cpl/gridmaps/T62/map_T62_to_ECwISC30to60E3r2_patch.20231018.nc</map>
<map name="OCN2ATM_FMAPNAME">cpl/gridmaps/ECwISC30to60E3r2/map_ECwISC30to60E3r2_to_T62_traave.20231018.nc</map>
<map name="OCN2ATM_SMAPNAME">cpl/gridmaps/ECwISC30to60E3r2/map_ECwISC30to60E3r2_to_T62_traave.20231018.nc</map>
<gridmap atm_grid="T62" ocn_grid="IcoswISC30E3r4">
<map name="ATM2OCN_FMAPNAME">cpl/gridmaps/T62/map_T62_to_IcoswISC30E3r4_traave.20231121.nc</map>
<map name="ATM2OCN_SMAPNAME">cpl/gridmaps/T62/map_T62_to_IcoswISC30E3r4-nomask_trbilin.20231121.nc</map>
<map name="ATM2OCN_VMAPNAME">cpl/gridmaps/T62/map_T62_to_IcoswISC30E3r4_esmfpatch.20231121.nc</map>
<map name="OCN2ATM_FMAPNAME">cpl/gridmaps/IcoswISC30E3r4/map_IcoswISC30E3r4_to_T62_traave.20231121.nc</map>
<map name="OCN2ATM_SMAPNAME">cpl/gridmaps/IcoswISC30E3r4/map_IcoswISC30E3r4_to_T62_traave.20231121.nc</map>
</gridmap>
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Was the ECwISC30to60E3r2 removed here on purpose, @jonbob?

@xylar xylar force-pushed the mesh/add-icoswisc30e3r4 branch from 73cd0ae to c753ef8 Compare November 28, 2023 16:08
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xylar commented Nov 28, 2023

I rebased to handle conflicts with AB2 merge, #5989

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xylar commented Dec 4, 2023

I will close this because I think it's unlikely that we will adopt it.

@xylar xylar closed this Dec 4, 2023
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