fa5d606c-dc95-47ee-9016-7a82e446f2f2 eng utf8 dataset dataset NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom polardatacentre@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact 2022-02-28 ISO 19115 Geographic Information - Metadata ISO 19115:2003(E) European Petroleum Survey Group (EPSG) Geodetic Parameter Registry 2008-11-12 publication European Petroleum Survey Group EPSGadministrator@iogp.org https://www.epsg-registry.org/ EPSG Geodetic Parameter Dataset The EPSG Geodetic Parameter Dataset is a structured dataset of Coordinate Reference Systems and Coordinate Transformations, accessible through this online registry. information publisher urn:ogc:def:crs:EPSG::3031 6.18.3 BEDMAP2 - Ice thickness, bed and surface elevation for Antarctica - gridding products 2022-02-28 creation 2022-02-28 revision 2022-02-28 publication 2022-02-28 released 1.0 https://doi.org/10.5285/fa5d606c-dc95-47ee-9016-7a82e446f2f2 doi GB/NERC/BAS/PDC/01617 https://data.bas.ac.uk/ Please cite this item as: Fretwell, P., Pritchard, H., Vaughan, D., Bamber, J., Barrand, N., Bell, R., Bianchi, C., Bingham, R., Blankenship, D., Casassa, G., Catania, G., Callens, D., Conway, H., Cook, A., Corr, H., Damaske, D., Damn, V., Ferraccioli, F., Forsberg, R., ... Zirizzotti, A. (2022). BEDMAP2 - 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/fa5d606c-dc95-47ee-9016-7a82e446f2f2 We present here Bedmap2 (2013), a suite of gridded products describing surface elevation, ice-thickness and the sea floor and subglacial bed elevation of the Antarctic south of 60deg S. We derived these products using data from a variety of sources, including many substantial surveys completed since the original Bedmap compilation (Bedmap1) in 2001. In particular, the Bedmap2 ice thickness grid is made from 25 million measurements, over two orders of magnitude more than were used in Bedmap1. In most parts of Antarctica the subglacial landscape is visible in much greater detail than was previously available and the improved data coverage has in many areas revealed the full scale of mountain ranges, valleys, basins and troughs, only fragments of which were previously indicated in local surveys. The derived statistics for Bedmap2 show that the volume of ice contained in the Antarctic ice sheet (27 million km3) and its potential contribution to sea-level rise (58 m) are similar to those of Bedmap1, but the mean thickness of the ice sheet is 4.6 % greater, the mean depth of the bed beneath the grounded ice sheet is 72 m lower and the area of ice sheet grounded on bed below sea level is increased by 10 %. The Bedmap2 compilation highlights several areas beneath the ice sheet where the bed elevation is substantially lower than the deepest bed indicated by Bedmap1. These products, along with grids of data coverage and uncertainty, provide new opportunities for detailed modelling of the past and future evolution of the Antarctic ice sheets. The associated Bedmap datasets are listed here: https://www.bas.ac.uk/project/bedmap/#data The compilation of Bedmap2 products was undertaken within the British Antarctic Survey's programme, Polar Science for Planet Earth. No credit. completed Fretwell, Peter British Antarctic Survey Researcher author Pritchard, Hamish British Antarctic Survey Researcher author Vaughan, David British Antarctic Survey Researcher author Bamber, Jonathan University of Bristol Researcher author Barrand, N. British Antarctic Survey Researcher author Bell, R.E. Lamont Doherty Earth Observatory, Columbia University, Palisades, NY, USA Researcher author Bianchi, C Istituto Nazionale di Geofisica e Vulcanologia Researcher author Bingham, Robert University of Edinburgh Researcher author Blankenship, Donald Institute for Geophysics, Jackson School of Geosciences, University of Texas Researcher author Casassa, G. Centro de Estudios Cientificos Researcher author Catania, Ginny University of Texas Researcher author Callens, D. Laboratoire de Glaciologie, Universite Libre de Bruxelles Researcher author Conway, H Earth and Space Sciences, University of Washington Researcher author Cook, Alison British Antarctic Survey Researcher author Corr, Hugh British Antarctic Survey Researcher author Damaske, D Center for Marine Environmental Sciences, University Bremen Researcher author Damn, V. Federal Institute for Geosciences and Natural Resources Researcher author Ferraccioli, Fausto British Antarctic Survey Researcher author Forsberg, Rene DTU Space Researcher author Fujita, S. National Institute of Polar Research Researcher author Gim, Y. Jet Propulsion Laboratory. California Institute of Technology Researcher author Gogineni, P. University of Alabama Researcher author Griggs, J. School of Geographical Sciences, University of Bristol Researcher author Hindmarsh, Richard British Antarctic Survey Researcher author Holmlund, P. Stockholm University Researcher author Holt, J.W. University of Arizona Researcher author Jacobel, R. St. Olaf College Researcher author Jenkins, Adrian Northumbria University Researcher author Jokat, Wilfried Alfred Wegener Institute Helmholtz Center for Polar and Marine Research Researcher author Jordan, Tom British Antarctic Survey Researcher author King, Edward British Antarctic Survey Researcher author Kohler, Jack Norwegian Polar Institute Researcher author Krabill, W. NASA Wallops Flight Facility Researcher author Riger-Kusk, M. Western Norway University of Applied Sciences Researcher author Langley, K. Department of Geosciences, University of Oslo Researcher author Leitchenkov, G. Institute for Geology and Mineral Resources of the World Ocean Researcher author Leuschen, C. Centre for Remote Sensing of Ice Sheets, University of Kansas Researcher author Luyendyk, B. Earth Research Institute, University of California Researcher author Matsuoka, Kenichi Norwegian Polar Institute Researcher author Mouginot, Jeremie Univeristy of California Researcher author Nitsche, Frank Lamont-Doherty Earth Observatory, Columbia University Researcher author Nogi, Y. National Institute of Polar Research, Tokyo, Japan Researcher author Nost, O. Norwegian Polar Institute Researcher author Popov, S. Polar Marine Geosurvey Expedition Researcher author Rignot, Eric University of California Researcher author Rippin, David University of York Researcher author Rivera, Andres Centro de Estudios Cientificos Researcher author Roberts, J.L. Department of the Environment, Australian Antarctic Division, Kingston, Tasmania Researcher author Ross, Neil Newcastle University Researcher author Siegert, Martin Imperial College London Researcher author Smith, Andrew British Antarctic Survey Researcher author Steinhage, D. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research Researcher author Studinger, M. NASA Goddard Space Flight Center Researcher author Sun, B. Polar Research Institute of China Researcher author Tinto, Kirsty Lamont Doherty Earth Observatory Researcher author Welch, B. St. Olaf College Researcher author Wilson, D.S. Marine Science Institute, University of California Researcher author Young, Duncan Institute for Geophysics, Jackson School of Geosciences, University of Texas Researcher author Xiangbin, C. Polar Research Institute of China Researcher author Zirizzotti, A. Istituto Nazionale di Geofisica e Vulcanologia Researcher author NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact asNeeded completed 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 EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets theme Global Change Master Directory (GCMD) Science Keywords 2026-01-27 publication 23 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Greenbelt MD United States of America https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher BEDMAP Elevation Ice thickness theme Antarctica place Elevation theme GEMET - INSPIRE themes, version 1.0 2021-01-06 revision otherRestrictions no limitations to public access otherRestrictions no limitations license Creative Commons Attribution 4.0 International otherRestrictions This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/ otherRestrictions Further by downloading this data the user acknowledges that they agree with the NERC data policy (), and the following conditions: 1. To cite the data and the Bedmap2 publication in any publication as follows: REFERENCE: Fretwell, P., Pritchard, H. D., Vaughan, D. G., Bamber, J. L., Barrand, N. E., Bell, R., Bianchi, C., Bingham, R. G., Blankenship, D. D., Casassa, G., Catania, G., Callens, D., Conway, H., Cook, A. J., Corr, H. F. J., Damaske, D., Damm, V., Ferraccioli, F., Forsberg, R., Fujita, S., Gim, Y., Gogineni, P., Griggs, J. A., Hindmarsh, R. C. A., Holmlund, P., Holt, J. W., Jacobel, R. W., Jenkins, A., Jokat, W., Jordan, T., King, E. C., Kohler, J., Krabill, W., Riger-Kusk, M., Langley, K. A., Leitchenkov, G., Leuschen, C., Luyendyk, B. P., Matsuoka, K., Mouginot, J., Nitsche, F. O., Nogi, Y., Nost, O. A., Popov, S. V., Rignot, E., Rippin, D. M., Rivera, A., Roberts, J., Ross, N., Siegert, M. J., Smith, A. M., Steinhage, D., Studinger, M., Sun, B., Tinto, B. K., Welch, B. C., Wilson, D., Young, D. A., Xiangbin, C., and Zirizzotti, A.: Bedmap2: improved ice bed, surface and thickness datasets for Antarctica, The Cryosphere, 7, 375-393, https://doi.org/10.5194/tc-7-375-2013, 2013. DATA: Fretwell, P., Pritchard, H., Vaughan, D., Bamber, J., Barrand, N., Bell, R. E., Bianchi, C., Bingham, R., Blankenship, D., Casassa, G., Catania, G., Callens, D., Conway, H., Cook, A., Corr, H., Damaske, D., Damn, V., Ferraccioli, F., Forsberg, R., ... Zirizzotti, A. (2022). BEDMAP2 - 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/FA5D606C-DC95-47EE-9016-7A82E446F2F2 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. otherRestrictions None doi doi crossReference doi doi crossReference url url largerWorkCitation url url crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference doi doi crossReference url url crossReference textTable eng utf8 elevation environment geoscientificInformation -180.0 180.0 -90.0 -60.0 1991-01-01 2013-12-31 It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk. NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information distributor text/plain image/tiff bytes 4831838208 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=fa5d606c-dc95-47ee-9016-7a82e446f2f2 WWW:LINK-1.0-http--link Get Data Download data download bytes 4831838208 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=fa5d606c-dc95-47ee-9016-7a82e446f2f2 WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: We derived these products using data from a variety of sources, including many substantial surveys completed since the original Bedmap compilation (Bedmap1) in 2001. In particular, the Bedmap2 ice thickness grid is made from 25 million measurements, over two orders of magnitude more than were used in Bedmap1. In most parts of Antarctica the subglacial landscape is visible in much greater detail than was previously available and the improved data coverage has in many areas revealed the full scale of mountain ranges, valleys, basins and troughs, only fragments of which were previously indicated in local surveys. The derived statistics for Bedmap2 show that the volume of ice contained in the Antarctic ice sheet (27 million km3) and its potential contribution to sea-level rise (58 m) are similar to those of Bedmap1, but the mean thickness of the ice sheet is 4.6 % greater, the mean depth of the bed beneath the grounded ice sheet is 72 m lower and the area of ice sheet grounded on bed below sea level is increased by 10 %. The Bedmap2 compilation highlights several areas beneath the ice sheet where the bed elevation is substantially lower than the deepest bed indicated by Bedmap1. These products, along with grids of data coverage and uncertainty, provide new opportunities for detailed modelling of the past and future evolution of the Antarctic ice sheets. These data have been previously published in 2013. To preserve the data, the data have been submitted to the UK Polar Data Centre and published in 2022. asNeeded completed