GCM-Forced Ice-Sheet Simulations Validated Against Proxy Reconstructions
Here, we present new, transient, GCM-forced ice-sheet simulations validated against proxy reconstructions. This is the first time such an evaluation has been attempted. Our empirically constrained simulations indicate that the AIS contributed 4 m to global mean sea level by 126 ka BP, with ice lost primarily from the Amundsen, but not Ross or Weddell Sea, sectors. We resolve the conflict between previous work and show that the AIS thinned in the Wilkes Subglacial Basin but did not retreat. We also find that the West AIS may be predisposed to future collapse even in the absence of further environmental change, consistent with previous studies.
There are two files, for Termination 1 ('T1') and Termination 2 ('T2').
They contain spatial fields for ice thickness, ice surface elevation, bedrock elevation, surface and basal velocity, and mask.
The T1 outputs are every 500 years, whereas the T2 outputs are every 100 years.
The spatial resolution of both is 20 km.
Sea-level-equivalent mass loss can be calculated from these outputs, but is also provided here in a text file for convenience.
RELATED PUBLICATION: Golledge, N.R., Clark, P.U., He, F., et al. (2021). Retreat of the Antarctic Ice Sheet During the Last Interglaciation and Implications for Future Change. Geophysical Research Letters, 48(17). https://doi.org/10.1029/2021GL094513
GET DATA: https://doi.org/10.17605/OSF.IO/GZB3H
Simple
- Date (Creation)
- 2021-05-26T00:00:00
- Date (Publication)
- 2021-05-26T00:00:00
Identifier
- Identifier
- https://doi.org/10.17605/OSF.IO/GZB3H
- Status
- completed Completed
- Maintenance and update frequency
- As needed
- Maintenance note
- Commit message
- Keywords
-
- GCMD Earth Science and Earth Science Services Keywords
-
- ICE VELOCITY
- ICE SHEETS
- GLACIER THICKNESS/ICE SHEET THICKNESS
- ICE GROWTH/MELT
- SEA LEVEL RISE
- GCMD Platform/Sources Keywords
-
- MODELS
- CLIMATE MODELS
- GCM
- GCMD Locations Keywords
-
- WEDDELL SEA
- ROSS SEA
- ANTARCTICA
- Use limitation
- This data set conforms to the CC BY Attribution License (https://creativecommons.org/licenses/by/4.0/)
- Hierarchy level
- Dataset
- Date
- Statement
- Creative Commons Attribution 4
- gmd:disseminationConstraints
- License
- Access constraints
- License
- Use constraints
- License
- Metadata language
- English
- Character set
- utf8 UTF8
- Topic category
-
- Geoscientific information
- Oceans
- Climatology, meteorology, atmosphere
- Begin date
- 2021-06-26
- End date
- 2021-05-26
- Distribution format
-
- File identifier
- e761a4f6-6125-4483-b818-8c9c70e82d78 XML
- Metadata language
- English
- Character set
- anyValidURI
- Hierarchy level
- Dataset
- Date stamp
- 2024-03-05T01:31:02
- Metadata standard name
- ISO 19115-1
- Metadata standard version
- 2018