Image: © GEBCO
The goal of the IBCAO initiative is to develop a digital database that contains all available bathymetric data north of 64° North, for use by mapmakers, researchers, institutions, and others whose work requires a detailed and accurate knowledge of the depth and the shape of the Arctic seabed.
Version 4.1 of the data set was released in July 2021. Please note that this is a historical IBCAO data set that has been superceded by the latest release.
Access the IBCAO V4 release paper published in the Nature Journal, Scientific Data.
The data are made available in Polar Stereographic projection co-ordinates (meters), true scale set at 75°N. The horizontal datum for the data set is WGS 84 and vertical datum can assumed to be Mean Sea Level (however, note there may be datum issues for older data, which can be to chart datum).
Downloading data indicates that the user accepts the disclaimer information.
Contact the Nippon Foundation-GEBCO Seabed 2030 Arctic and North Pacific Regional Center for more information about the data sets ().
| 200mx200m grid cell spacing | |||
|---|---|---|---|
| As a single complete bathymetric grid | |||
| netCDF format (2.2 Gbytes) | GeoTiff format (3.4 Gbytes) | ||
| As a set of 16 tiles | As a set of 4 tiles | ||
| netCDF format (2.2 Gbytes) | GeoTiff format (3 Gbytes) | netCDF format (2.2 Gbytes) | GeoTiff format (2.2 Gbytes) |
| 400mx400m grid cell spacing | |||
| As a single complete bathymetric grid | |||
| netCDF format (0.6 Gbytes) | GeoTiff format (0.8 Gbytes) | ||
Data set disclaimer information
| 200mx200m grid cell spacing | |||
|---|---|---|---|
| As a single complete bathymetric grid | |||
| netCDF format (2.2 Gbytes) | GeoTiff format (3.4 Gbytes) | ||
| As a set of 16 tiles | As a set of 4 tiles | ||
| netCDF format (2.2 Gbytes) | GeoTiff format (3 Gbytes) | netCDF format (2.2 Gbytes) | GeoTiff format (2.2 Gbytes) |
| 400mx400m grid cell spacing | |||
| As a single complete bathymetric grid | |||
| netCDF format (0.6 Gbytes) | GeoTiff format (0.8 Gbytes) | ||
Data set disclaimer information
This data set identifies the type of data that a grid cell is based on. It follows the TID coding as used for the GEBCO global grid.
| netCDF format (59 Mbytes) | GeoTiff format (1.7 Gbytes) |
This data set identifies the source of data that a grid cell is based on.
| netCDF format (85 Mbytes) | GeoTiff format (1.7 Gbytes) |
Data set disclaimer information
Version 4.1 of the International Bathymetric Chart of the Arctic Ocean (IBCAO) Grid, now referred to as the 'IBCAO V4.1 Grid', available from the above links, is provided on behalf of the IBCAO project under the terms of the disclaimer information as given below.
The IBCAO V4.1 Grid, should NOT be used for navigation or for any other purpose involving safety at sea.
The IBCAO V4.1 Grid is made available 'as is'. While every effort has been made to ensure reliability within the limits of present knowledge, the accuracy and completeness of The IBCAO V4.1 Grid cannot be guaranteed.
No responsibility can be accepted by those involved in its creation or publication for any consequential loss, injury or damage arising from its use or for determining the fitness of The IBCAO V4.1 Grid for any particular use.
The IBCAO V4.1 Grid is based on bathymetric data from many different sources of varying quality and coverage.
As The IBCAO V4.1 Grid is an information product created by interpolation of measured data, the resolution of the IBCAO V4.1 Grid may be significantly different to that of the resolution of the underlying measured data.
Contact the Nippon Foundation-GEBCO Seabed 2030 Arctic and North Pacific Regional Center for more information about the data set ().