The latest release of the GEBCO One Minute Grid was published in November 2008. It provided an update to the data set (which was originally published in 2003) to include version 2.23 of the International Bathymetric Chart of the Arctic Ocean (IBCAO) and improved bathymetry in some shallow water areas.
The GEBCO One Minute Grid is a global bathymetric grid with one arc-minute spacing that was originally based on the bathymetric contours contained within the Centenary Edition of the GEBCO Digital Atlas. Additional control contours and sounding point data were used in many regions, particularly shallow water areas and semi-enclosed seas, to constrain the gridding process. It is a continuous digital terrain model for ocean and land, with land elevations derived from the Global Land One-km Base Elevation (GLOBE) database.
For more information about the development and limitations of the grid please see the data set documentation, hosted on the British Oceanographic Data Centre (BODC) web site. Users are strongly advised to read this before making use of the data set.
There is no intention to further develop or update this data set.
Although every effort has been made to reduce the number of errors in the data set, it may still contain some artifacts created during the gridding process. See the errata pages at BODC for a list of reported bugs.