This directory contains a copy of the global water mask hosted at s3://asf-dem-west/WATER_MASK/TILES/ with the pixel values inverted. Pixel values of 1 indicate land and values of 0 indicate water.

It was created on 2026-04-21 by Andrew Johnston (asjohnston-asf on github) by running the following command using GDAL v3.12.3 on each geotiff in s3://asf-dem-west/WATER_MASK/TILES/ :

gdal raster calc -i A=TILES/n00e150.tif --calc 'abs(A-1)' -o LAND_TILES/n00e150.tif --of COG --ot Byte --co OVERVIEWS=IGNORE_EXISTING