NERC Data Catalogue Service
Simulations of Antarctic Ice Sheet sensitivity to climate and ocean forcing for a suite of Antarctic palaeotopographies
We present steady-state ice thickness, bed elevation, and ice surface elevation output from simulations of the Antarctic Ice Sheet (AIS) on a suite of reconstructed Antarctic palaeotopographies using the DeConto and Pollard (DP16) ice sheet model. Ice surface mass balance inputs were provided using the GENESIS v3.0 global atmosphere general circulation model coupled to a 50 m slab ocean model, which provides boundary meteorology for the RegCM3 regional climate model. Three climate/ocean scenarios were simulated: (1) cold climate orbital parameters, preindustrial CO2 levels (280 ppm) and modern ocean temperatures, (2) a subsequent shift to warm climate orbital parameters, an increase in CO2 levels to 500 ppm, and a 5 deg C ocean temperature rise, and (3) as for (2), but with CO2 levels increased to 840 ppm. The steady-state simulations were performed on a suite of reconstructed Antarctic palaeotopographies pertaining to the following four time slices: (1) the Eocene-Oligocene boundary (EOB; ca. 34 Ma), (2) the Oligocene-Miocene boundary (OMB, ca. 23 Ma), (3) the mid-Miocene (MM; ca. 14 Ma), and (4) the mid-Pliocene (MP; ca. 3.5 Ma). Simulations were performed for minimum, median, and maximum end-member topographies, and equivalent simulations were run on the modern (ice-free) Antarctic bed topography for comparison. Further details are given in the accompanying publication. For more information, please contact G. Paxman.
Funding was provided by NERC Ph.D. studentship NE/L002590/1.
Simple
- Alternate title
- Polar Data Centre (PDC) record GB/NERC/BAS/PDC/01404
- Date (Publication)
- 2020-10-08
- Identifier
- http://www.antarctica.ac.uk/dms/metadata.php?id= / GB/NERC/BAS/PDC/01404
- Maintenance and update frequency
- unknown Unknown
- Keywords
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- NDGO0001
- NERC OAI Harvesting
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- NERC_DDC
- GCMD Parameter Valids
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- EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Elevation/Ice Sheet Elevation
- EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Mass Balance/Ice Sheet Mass Balance
- EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Topography/Ice Sheet Topography
- EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Ice Sheets
- EARTH SCIENCE > Paleoclimate > Paleoclimate Reconstructions
- BAS Free-text keywords
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- Antarctic Ice Sheet
- climate change
- ice sheet sensitivity
- landscape evolution
- palaeotopography
- Use limitation
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This data is covered by a UK Open Government Licence (http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/). 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 in any publication as follows:
DATA REFERENCE
Paxman, G., Gasson, E., Jamieson, S., Bentley, M., & Ferraccioli, F. (2020). Simulations of Antarctic Ice Sheet sensitivity to climate and ocean forcing for a suite of Antarctic palaeotopographies (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/D67A07A8-BECC-419D-99F7-5578928461CA
LITERATURE REFERENCE
Paxman, G. J. G., Gasson, E. G. W., Jamieson, S. S. R., Bentley, M. J., Ferraccioli, F. 2020. Long-term increase in Antarctic Ice Sheet vulnerability driven by bed topography evolution. Geophysical Research Letters (in press).
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
- otherRestrictions Other restrictions
- Other constraints
-
This data is covered by a UK Open Government Licence (http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/). 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 in any publication as follows:
DATA REFERENCE
Paxman, G., Gasson, E., Jamieson, S., Bentley, M., & Ferraccioli, F. (2020). Simulations of Antarctic Ice Sheet sensitivity to climate and ocean forcing for a suite of Antarctic palaeotopographies (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/D67A07A8-BECC-419D-99F7-5578928461CA
LITERATURE REFERENCE
Paxman, G. J. G., Gasson, E. G. W., Jamieson, S. S. R., Bentley, M. J., Ferraccioli, F. 2020. Long-term increase in Antarctic Ice Sheet vulnerability driven by bed topography evolution. Geophysical Research Letters (in press).
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.
- Metadata language
- EnglishEnglish
- Topic category
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- Climatology, meteorology, atmosphere
- Geoscientific information
))
- Begin date
- unknown
- End date
- unknown
- Reference system identifier
- OGP / urn:ogc:def:crs:EPSG::4326
- Distribution format
-
- Hierarchy level
- dataset Dataset
Domain consistency
- Measure identification
- INSPIRE / Conformity_001
Conformance result
- Date
- Explanation
- See the referenced specification
- Pass
- No
- Statement
- The ice sheet model output reflect quasi-equilibrium conditions and are gridded at 10 km horizontal resolution. The ice sheet model includes parameterisations for the marine ice cliff failure and marine ice shelf hydrofracture processes. Full asynchronous coupling feedback between the regional climate model and the ice sheet model is not performed; the ice sheet extent in the regional climate model was kept constant.
- File identifier
- GB_NERC_BAS_PDC_01404 XML
- Metadata language
- EnglishEnglish
- Hierarchy level
- dataset Dataset
- Date stamp
- 2020-10-08
- Metadata standard name
- NERC profile of ISO19115:2003
- Metadata standard version
- 1.0
Overviews
Spatial extent
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