Alternate title

Polar Data Centre (PDC) record GB/NERC/BAS/PDC/01615

Date (Publication)

2024-11-18

Citation identifier

http://www.antarctica.ac.uk/dms/metadata.php?id= / GB/NERC/BAS/PDC/01615

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Antarctic Survey		pdc@bas.ac.uk	Custodian
NERC EDS UK Polar Data Centre	Pritchard, H., Fretwell, P., Fremand, A., Bodart, J., Kirkham, J., Aitken, A., Bamber, J., Bell, R., Bianchi, C., Bingham, R., Blankenship, D., Casassa, G., Catania, G., Christianson, K., Conway, H., Corr, H., Cui, X., Damaske, D., Damn, V., ... Zirizzotti, A.	pdc@bas.ac.uk	Originator

Maintenance and update frequency

Unknown

Keywords

• NDGO0001

NERC OAI Harvesting

• NERC_DDC

GCMD Parameter Valids

• EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets

• EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Elevation/Ice Sheet Elevation

• EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Thickness/Ice Sheet Thickness

• EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Topography/Ice Sheet Topography

BAS Free-text keywords

• Antarctica

• BEDMAP

• Elevation

• Ice thickness

Use limitation

This data is covered by a Creative Commons License ( https://creativecommons.org/licenses/by/4.0/) Further by downloading this data the user acknowledges that they agree with the NERC data policy ( http://www.nerc.ac.uk/research/sites/data/policy.asp), and the following conditions:

1. To cite the data and the Bedmap3 publication in any publication as follows:

DATA:

Pritchard, H., Fretwell, P., Fremand, A., Bodart, J., Kirkham, J., Aitken, A., Bamber, J., Bell, R., Bianchi, C., Bingham, R., Blankenship, D., Casassa, G., Catania, G., Christianson, K., Conway, H., Corr, H., Cui, X., Damaske, D., Damn, V., ... Zirizzotti, A. (2024). BEDMAP3 - Ice thickness, bed and surface elevation for Antarctica - gridding products (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/2d0e4791-8e20-46a3-80e4-f5f6716025d2

PAPER:

Pritchard, H.D., Fretwell, P.T., Fremand, A.C. et al. Bedmap3 updated ice bed, surface and thickness gridded datasets for Antarctica. Sci Data 12, 414 (2025). https://doi.org/10.1038/s41597-025-04672-y

2. The user recognizes the limitations of data. Use of the data is at the users'' own risk, and there is no warranty as to the quality or accuracy of any data, or the fitness of the data for your intended use. The data are not necessarily fully quality assured and cannot be expected to be free from measurement uncertainty, systematic biases, or errors of interpretation or analysis, and may include inaccuracies in error margins quoted with the data.

Access constraints

Other restrictions

Other constraints

This data is covered by a Creative Commons License ( https://creativecommons.org/licenses/by/4.0/) Further by downloading this data the user acknowledges that they agree with the NERC data policy ( http://www.nerc.ac.uk/research/sites/data/policy.asp), and the following conditions:

1. To cite the data and the Bedmap3 publication in any publication as follows:

DATA:

Pritchard, H., Fretwell, P., Fremand, A., Bodart, J., Kirkham, J., Aitken, A., Bamber, J., Bell, R., Bianchi, C., Bingham, R., Blankenship, D., Casassa, G., Catania, G., Christianson, K., Conway, H., Corr, H., Cui, X., Damaske, D., Damn, V., ... Zirizzotti, A. (2024). BEDMAP3 - Ice thickness, bed and surface elevation for Antarctica - gridding products (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/2d0e4791-8e20-46a3-80e4-f5f6716025d2

PAPER:

Pritchard, H.D., Fretwell, P.T., Fremand, A.C. et al. Bedmap3 updated ice bed, surface and thickness gridded datasets for Antarctica. Sci Data 12, 414 (2025). https://doi.org/10.1038/s41597-025-04672-y

2. The user recognizes the limitations of data. Use of the data is at the users'' own risk, and there is no warranty as to the quality or accuracy of any data, or the fitness of the data for your intended use. The data are not necessarily fully quality assured and cannot be expected to be free from measurement uncertainty, systematic biases, or errors of interpretation or analysis, and may include inaccuracies in error margins quoted with the data.

Distance

500  m

Language

English

Topic category

• Elevation
• Environment
• Geoscientific information

Begin date

1966-01-01

End date

2024-11-01

Reference system identifier

OGP / urn:ogc:def:crs:EPSG::4326

Distribution format

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
Polar Data Centre - British Antarctic Survey		pdc@bas.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
http		GET DATA

Hierarchy level

Dataset

Statement

All the grids have a cell size of 500m in the WGS 1984 Antarctic Polar Stereographic projection (EPSG:3031). Some specific quality control checks and corrections (e.g. negative height relative to sea level for ''sea'' cells while ''non-sea'' cells have positive values) have been undertaken and are extensively described in the associated paper (Pritchard et al.).

The uncertainty grids have been calculated through error budgets based upon a combination of published uncertainties and our own tests of accuracy and precision. The input datasets inherently have uncertainties with differing statistical distributions, and not all are well known. Furthermore, most Bedmap3 cells have values that are interpolated between sparse observations, and the uncertainties in this process are also difficult to quantify. Our uncertainties are therefore a best estimate based on the available evidence, given to approximately the 1-sigma level.

Metadata

File identifier

GB_NERC_BAS_PDC_01615 XML

Metadata language

English

Hierarchy level

Dataset

Date stamp

2024-11-18

Metadata standard name

NERC profile of ISO19115:2003

Metadata standard version

1.0

Metadata author

Organisation name	Individual name	Electronic mail address	Role
British Antarctic Survey		pdc@bas.ac.uk	Point of contact

Dataset URI

http://www.antarctica.ac.uk/dms/metadata.php?id=GB/NERC/BAS/PDC/01615