Articles | Volume 16, issue 3
https://doi.org/10.5194/tc-16-761-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-16-761-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
08 Mar 2022
Research article |
| 08 Mar 2022
| 08 Mar 2022
Derivation of bedrock topography measurement requirements for the reduction of uncertainty in ice-sheet model projections of Thwaites Glacier
Blake A. Castleman
CORRESPONDING AUTHOR
Jet Propulsion Laboratory, California Institute of Technology,
Pasadena, CA, USA
School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
Nicole-Jeanne Schlegel
Jet Propulsion Laboratory, California Institute of Technology,
Pasadena, CA, USA
Lambert Caron
Jet Propulsion Laboratory, California Institute of Technology,
Pasadena, CA, USA
Eric Larour
Jet Propulsion Laboratory, California Institute of Technology,
Pasadena, CA, USA
Ala Khazendar
Jet Propulsion Laboratory, California Institute of Technology,
Pasadena, CA, USA
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Cited
16 citations as recorded by crossref.
- A community vision for next-generation bed mapping in Antarctica K. Matsuoka et al. https://doi.org/10.1098/rsta.2025.0372
- The case for a Framework for UnderStanding Ice-Ocean iNteractions (FUSION) in the Antarctic-Southern Ocean system F. McCormack et al. https://doi.org/10.1525/elementa.2024.00036
- Calibrated sea level contribution from the Amundsen Sea sector, West Antarctica, under RCP8.5 and Paris 2C scenarios S. Rosier et al. https://doi.org/10.5194/tc-19-2527-2025
- Graphics-processing-unit-accelerated ice flow solver for unstructured meshes using the Shallow-Shelf Approximation (FastIceFlo v1.0.1) A. Sandip et al. https://doi.org/10.5194/gmd-17-899-2024
- Sustained ocean cooling insufficient to reverse sea level rise from Antarctica A. Alevropoulos-Borrill et al. https://doi.org/10.1038/s43247-024-01297-8
- Ice motion across incised fjord landscapes S. Barndon et al. https://doi.org/10.5194/tc-20-2757-2026
- Assessing the potential for ice flow piracy between the Totten and Vanderford glaciers, East Antarctica F. McCormack et al. https://doi.org/10.5194/tc-17-4549-2023
- Uncertain ground: impact of bed topography on Antarctic Ice Sheet projections J. Caillet et al. https://doi.org/10.1098/rsta.2024.0543
- Ambiguous stability of glaciers at bed peaks A. Robel et al. https://doi.org/10.1017/jog.2022.31
- Estimating the uncertainty of sea-ice area and sea-ice extent from satellite retrievals A. Wernecke et al. https://doi.org/10.5194/tc-18-2473-2024
- Complex mesoscale landscapes beneath Antarctica mapped from space H. Ockenden et al. https://doi.org/10.1126/science.ady2532
- What next for ice-sheet bed measurements? H. Millman et al. https://doi.org/10.1098/rsta.2025.0190
- Inferring subglacial topography using physics informed machine learning constrained by two conservation laws M. Krishna et al. https://doi.org/10.5194/tc-20-3533-2026
- Synthetic bed topographies for Antarctica and their utility in ice sheet modelling F. McCormack et al. https://doi.org/10.1098/rsta.2024.0537
- Bed topography data gaps in the Antarctic Ice Sheet margin zone revealed by new analysis of Bedmap3 database for Antarctic RINGS K. Matsuoka & C. Shackleton https://doi.org/10.1098/rsta.2025.0371
- Emerging evidence of abrupt changes in the Antarctic environment N. Abram et al. https://doi.org/10.1038/s41586-025-09349-5
16 citations as recorded by crossref.
- A community vision for next-generation bed mapping in Antarctica K. Matsuoka et al. https://doi.org/10.1098/rsta.2025.0372
- The case for a Framework for UnderStanding Ice-Ocean iNteractions (FUSION) in the Antarctic-Southern Ocean system F. McCormack et al. https://doi.org/10.1525/elementa.2024.00036
- Calibrated sea level contribution from the Amundsen Sea sector, West Antarctica, under RCP8.5 and Paris 2C scenarios S. Rosier et al. https://doi.org/10.5194/tc-19-2527-2025
- Graphics-processing-unit-accelerated ice flow solver for unstructured meshes using the Shallow-Shelf Approximation (FastIceFlo v1.0.1) A. Sandip et al. https://doi.org/10.5194/gmd-17-899-2024
- Sustained ocean cooling insufficient to reverse sea level rise from Antarctica A. Alevropoulos-Borrill et al. https://doi.org/10.1038/s43247-024-01297-8
- Ice motion across incised fjord landscapes S. Barndon et al. https://doi.org/10.5194/tc-20-2757-2026
- Assessing the potential for ice flow piracy between the Totten and Vanderford glaciers, East Antarctica F. McCormack et al. https://doi.org/10.5194/tc-17-4549-2023
- Uncertain ground: impact of bed topography on Antarctic Ice Sheet projections J. Caillet et al. https://doi.org/10.1098/rsta.2024.0543
- Ambiguous stability of glaciers at bed peaks A. Robel et al. https://doi.org/10.1017/jog.2022.31
- Estimating the uncertainty of sea-ice area and sea-ice extent from satellite retrievals A. Wernecke et al. https://doi.org/10.5194/tc-18-2473-2024
- Complex mesoscale landscapes beneath Antarctica mapped from space H. Ockenden et al. https://doi.org/10.1126/science.ady2532
- What next for ice-sheet bed measurements? H. Millman et al. https://doi.org/10.1098/rsta.2025.0190
- Inferring subglacial topography using physics informed machine learning constrained by two conservation laws M. Krishna et al. https://doi.org/10.5194/tc-20-3533-2026
- Synthetic bed topographies for Antarctica and their utility in ice sheet modelling F. McCormack et al. https://doi.org/10.1098/rsta.2024.0537
- Bed topography data gaps in the Antarctic Ice Sheet margin zone revealed by new analysis of Bedmap3 database for Antarctic RINGS K. Matsuoka & C. Shackleton https://doi.org/10.1098/rsta.2025.0371
- Emerging evidence of abrupt changes in the Antarctic environment N. Abram et al. https://doi.org/10.1038/s41586-025-09349-5
Saved (final revised paper)
Latest update: 14 Jul 2026
Short summary
In the described study, we derive an uncertainty range for global mean sea level rise (SLR) contribution from Thwaites Glacier in a 200-year period under an extreme ocean warming scenario. We derive the spatial and vertical resolutions needed for bedrock data acquisition missions in order to limit global mean SLR contribution from Thwaites Glacier to ±2 cm in a 200-year period. We conduct sensitivity experiments in order to present the locations of critical regions in need of accurate mapping.
In the described study, we derive an uncertainty range for global mean sea level rise (SLR)...
