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Lake information into the GEOS BCS workflow#1214

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biljanaorescanin wants to merge 4 commits intodevelopfrom
feature/borescan_lake_to_til_file
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Lake information into the GEOS BCS workflow#1214
biljanaorescanin wants to merge 4 commits intodevelopfrom
feature/borescan_lake_to_til_file

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@biljanaorescanin biljanaorescanin commented Feb 24, 2026

This PR introduces HydroLAKES-TopoCat v1.1 (2023) lake information into the GEOS BCS workflow.
This update does not alter tile geometry or Pfafstetter indexing. It augments tile metadata with physically consistent lake fraction information.

It implements:

  1. Lake preprocessing pipeline ( 2 python codes and readme) added under preproc
  2. Tile-level lake metrics appended to tile .nc4 files ( we add two subroutines to rmTinyCatchParaMod + calls)

Branch was tested in BCs package for EASE grid (M36 and M09) and for Cube (c180 and c90)

Example of one tile info : CF0180x6C_DE1440xPE0720-Pfafstetter.nc4
19 : 0000-00-00 00:00:00 0 2252578 0 : 0.0000 0.0099671 1.0000 : tile_lake_frac
20 : 0000-00-00 00:00:00 0 2252578 0 : 0.0000 0.0090341 1.0000 : tile_is_lake_50pct

and:
double tile_lake_frac(tile) ;
tile_lake_frac:long_name = "Lake fraction in tile" ;
tile_lake_frac:units = "1" ;
int tile_is_lake_50pct(tile) ;
tile_is_lake_50pct:long_name = "Flag: tile_lake_frac >= 0.5" ;
tile_is_lake_50pct:units = "1" ;

@gmao-rreichle

@biljanaorescanin biljanaorescanin added enhancement New feature or request 0 diff The changes in this pull request have verified to be zero-diff with the target branch. 0-diff AMIP 0-diff for uncoupled AMIP runs labels Feb 24, 2026
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