Cloud-optimized copies of the Bedmap gridded products for Antarctica, with virtual multidimensional indexes (GDAL VRT, Kerchunk, Icechunk, STAC). Currently holds Bedmap3: 500 m grids in EPSG:3031 of ice thickness, bed and surface elevation, uncertainty and masks. Repackaged from the UK Polar Data Centre release (doi:10.5285/2d0e4791-8e20-46a3-80e4-f5f6716025d2), CC BY 4.0.
Cloud-optimised copies of the Bedmap gridded products for Antarctica, with virtual multidimensional indexes over them. Each version has its own prefix. This is a repackaged copy. The authoritative release is the UK Polar Data Centre record cited below.
Static grids of 13,334 x 13,334 cells at 500 m in EPSG:3031, Int16, nodata -9999, one Cloud Optimized GeoTIFF per array.
Layout:
Every virtual form references the COGs by absolute URL.
The source is bedmap3.nc from the UK Polar Data Centre, SHA-256
776bfbef4d4c06ceea0851619915d2c397eef9547d35cb551d5d1b11dd064ff3. The COGs
are written from it with values, type and nodata unchanged, and are compared
pixel by pixel with the netCDF. The same record also distributes GeoTIFFs,
whose seven grids are pixel-identical to the netCDF arrays. The EPSG:3031
definition, the tiling, ZSTD compression and overviews are the only additions;
the array names are those of the netCDF. bm3_streamlines_pt.zip is not
included.
Use of these data requires citation of the dataset and the paper, under CC BY 4.0:
Pritchard, H., Fretwell, P., Fremand, A., et al. (2024). BEDMAP3 - Ice thickness, bed and surface elevation for Antarctica - gridding products (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/2d0e4791-8e20-46a3-80e4-f5f6716025d2
Pritchard, H.D., Fretwell, P.T., Fremand, A.C., et al. Bedmap3 updated ice bed, surface and thickness gridded datasets for Antarctica. Sci Data 12, 414 (2025). https://doi.org/10.1038/s41597-025-04672-y