oggm.tasks.glacier_masks

oggm.tasks.glacier_masks(gdir)[source]

Makes a gridded mask of the glacier outlines that can be used by OGGM.

For a more robust solution (not OGGM compatible) see simple_glacier_masks.

Parameters
gdiroggm.GlacierDirectory

where to write the data

Notes

Files written to the glacier directory:
geometries.pkl

A dictionary containing the shapely.Polygons of a glacier. The “polygon_hr” entry contains the geometry transformed to the local grid in (i, j) coordinates, while the “polygon_pix” entry contains the geometries transformed into the coarse grid (the i, j elements are integers). The “polygon_area” entry contains the area of the polygon as computed by Shapely. The “catchment_indices” entrycontains a list of len n_centerlines, each element containing a numpy array of the indices in the glacier grid which represent the centerlines catchment area.

gridded_data.nc

A netcdf file containing several gridded data variables such as topography, the glacier masks, the interpolated 2D glacier bed, and more.