The GEBCO_2021 Grid - A continuous terrain model of the global oceans and land

The GEBCO_2021 Grid is a global continuous terrain model for ocean and land with a spatial resolution of 15 arc seconds. This is the third GEBCO grid produced through the framework of the Nippon Foundation-GEBCO Seabed 2030 Project. The aim of the project is to map the global sea floor by 2030. For the 2021 release of the GEBCO grid, it is estimated that 20.6% of seafloor has now been mapped, this is an increase from 19% for the previous release, GEBCO_2020.

The GEBCO_2021 Grid uses as a ‘base’ Version 2.2 of the SRTM15+ data set between latitudes of 50° South and 60° North. This data set is a fusion of land topography with measured and estimated seafloor topography. The base grid has been augmented with the gridded bathymetric data sets developed by the four Seabed 2030 Regional Centers to produce the global GEBCO grid.

The primary GEBCO_2021 grid contains land and ice surface elevation information - as provided for previous GEBCO grid releases. In addition, for the 2021 release, we have made available a version with under-ice topography/bathymetry information for Greenland and Antarctica.

GEBCO's aim is to provide the most authoritative publicly-available bathymetry of the world's oceans. It operates under the joint auspices of the International Hydrographic Organization (IHO) and the Intergovernmental Oceanographic Commission (IOC) (of UNESCO).

 
Citation proposal
(2020) . The GEBCO_2021 Grid - A continuous terrain model of the global oceans and land. https://services.mspdata.eu:/geonetwork/srv/api/records/7b032e0a-515d-4685-b546-73995bea6287

Simple

Date ( Publication )
2020-04-30
Date ( Creation )
2020-01-01
Identifier
DTM_GEBCO_2020
Credit
GEBCO
Status
Completed

  Point of contact

Thèmes Sextant ( Theme )
  • /Physical Environment
GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Elevation
Keywords
  • Southern Ocean, Indian Ocean, Arctic Ocean, Atlantic Ocean, Pacific Ocean, World, elevation, oceans
Mission Atlantic - BODC Parameters ( Theme )
  • /Marine geology/Gravity, magnetics and bathymetry
Mission Atlantic - Case Studies ( Theme )
Mission Atlantic - Data type (DMP) ( Theme )
  • Spatial data products
Mission Atlantic - Work Package ( Theme )
  • WP6 Dynamics of ecosystem state and resources , WP4 Benthic Mapping
Ocean Hackathon - Ville ( Place )
  • Boulogne-sur-Mer , Brest , Cádiz , Cape Town , Cardiff , Fort-de-France , Champs-sur-Marne , Mexico , La Rochelle , Rostock , Nouméa , San Francisco , Rimouski , Santiago , Toulon , Split , Sète
Mission Atlantic - Resources ( Theme )
  • Data
Other constraints
The GEBCO Grid should NOT be used for navigation or for any other purpose involving safety at sea.
Spatial representation type
Grid
Distance
15  Arc second
Metadata language
English
Character set
UTF8
Topic category
  • Oceans
N
S
E
W


Number of dimensions
2
Dimension name
Vertical
Dimension name
Time
Cell geometry
surface
Transformation parameter availability
false
Distribution format
  • ( )

OnLine resource
SeaBed 2030 website  
OnLine resource
Download link on gebco website  
OnLine resource
Download data for user-defined areas  
OnLine resource
GEBCO_LATEST_2  

GEBCO Grid colour-shaded for elevation

Hierarchy level
Dataset

Conformance result

Date ( Publication )
2010-12-08
Explanation
See the referenced specification

Metadata

File identifier
7b032e0a-515d-4685-b546-73995bea6287   XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2021-12-08T11:03:30
Metadata standard name
ISO 19115:2003/19139 - SEXTANT
Metadata standard version
1.0
 
 

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