Land-Sea and Relief Masks
For each geographical zone (North-West (NW) of France and South-East (SE) of France), two different masks are stored in a GRIB file:
the land-sea mask, stored in the
lsmfile. The values are binary : 0 for sea and 1 for land.
the relief mask, stored in the
p3008file. The values are in meters.
The spatial resolution of the masks is 0.025°.
Note : When you open a GRIB file with the library xarray, a new associated
.idx file is created.