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A composite 5-minute gridded bathymetry of the Southern Ocean was derived from combining satellite radar altimetry data (Smith and Sandwell, 1997) and the GEBCO-1997 (IOC et al., 1997) digital isobaths.

GEBCO Color Scheme

Collection (zip) file with binary (netcdf) high-resolution (5-min and 15-min) gridded data

This bathymetry was used during the last step in the quality control of the Southern Ocean Database to correct or assign missing water depths to about a quarter of the stations. It was projected between stations to construct the high-resolution bottom topography in the masks for the vertical sections, and for the depth and neutral density maps.