The GEBCO_2020 Grid - the 2020 compilation of a continuous terrain model of the global oceans and land

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Marine Environmental Data & Information Network
Last updated:
10 July 2024
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Summary

The GEBCO2020 Grid is a global continuous terrain model for ocean and land with a spatial resolution of 15 arc seconds. In regions outside of the Arctic Ocean area, the grid uses as a base Version 2 of the SRTM15plus data set (Tozer, B. et al, 2019). This data set is a fusion of land topography with measured and estimated seafloor topography. Included on top of this base grid are gridded bathymetric data sets developed by the four Regional Centers of The Nippon Foundation-GEBCO Seabed 2030 Project. The GEBCO2020 Grid represents all data within the 2020 compilation. The compilation of the GEBCO2020 Grid was carried out at the Seabed 2030 Global Center, hosted at the National Oceanography Centre, UK, with the aim of producing a seamless global terrain model. Outside of Polar regions, the gridded bathymetric data sets supplied by the Regional Centers, as sparse grids, i.e. only grid cells that contain data were populated, were included on to the base grid without any blending. The data sets supplied in the form of complete grids (primarily areas north of 60N and south of 50S) were included using feather blending techniques from GlobalMapper software. The GEBCO_2020 Grid has been developed through the Nippon Foundation-GEBCO Seabed 2030 Project. This is a collaborative project between the Nippon Foundation of Japan and the General Bathymetric Chart of the Oceans (GEBCO). It aims to bring together all available bathymetric data to produce the definitive map of the world ocean floor by 2030 and make it available to all. Funded by the Nippon Foundation, the four Seabed 2030 Regional Centers include the Southern Ocean - hosted at the Alfred Wegener Institute, Germany; South and West Pacific Ocean - hosted at the National Institute of Water and Atmospheric Research, New Zealand; Atlantic and Indian Oceans - hosted at the Lamont Doherty Earth Observatory, Columbia University, USA; Arctic and North Pacific Oceans - hosted at Stockholm University, Sweden and the Center for Coastal and Ocean Mapping at the University of New Hampshire, USA.

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Link to the data Format File added Data preview
Published dataset - doi:10.5285/a29c5465-b138-234d-e053-6c86abc040b9 N/A 10 July 2024 Not available
Dataset Web Site N/A 10 July 2024 Not available

Additional information

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Added to data.gov.uk
2022-03-02
Access contraints
Data are freely available
Harvest GUID
c71fb3f0c44a5a0ca9486e318cfb4826
Extent
Latitude: 90.00° to -90.00°
Longitude: -180.00° to 180.00°
Spatial reference system
Dataset reference date
2022-03-02 (publication)
2020-04-02 (creation)
2020-04-27 (revision)
Frequency of update
asNeeded
Responsible party
British Oceanographic Data Centre (owner, originator, custodian, distributor)
ISO 19139 resource type
dataset
Metadata language
eng
Source Metadata
XML
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