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Add option to set min resolution below sea level within a geojson hull - #974

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trhille wants to merge 2 commits into
MPAS-Dev:mainfrom
trhille:landice/max_res_within_geojson
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Add option to set min resolution below sea level within a geojson hull#974
trhille wants to merge 2 commits into
MPAS-Dev:mainfrom
trhille:landice/max_res_within_geojson

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@trhille

@trhille trhille commented Aug 11, 2026

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build_cell_width accepts a 'min_spac_geojson' config option pointing to a lon/lat geojson hull. Within that hull, cell spacing is set to min_spac everywhere the bed is below sea level, via a new geojson_to_grid_mask helper and a hull_mask term in set_cell_width. The Antarctica step passes its projection so the hull vertices can be transformed to the gridded coordinates.

Checklist

  • User's Guide has been updated
  • Developer's Guide has been updated
  • API documentation in the Developer's Guide (api.rst) has any new or modified class, method and/or functions listed
  • Document (in a comment titled Testing in this PR) any testing that was used to verify the changes

build_cell_width accepts a 'min_spac_geojson' config option pointing to a
lon/lat geojson hull. Within that hull, cell spacing is set to min_spac
everywhere the bed is below sea level, via a new geojson_to_grid_mask helper
and a hull_mask term in set_cell_width. The Antarctica step passes its
projection so the hull vertices can be transformed to the gridded coordinates.
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