Articles | Volume 12, issue 10
https://doi.org/10.5194/tc-12-3229-2018
© Author(s) 2018. 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-12-3229-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
09 Oct 2018
Research article |
| 09 Oct 2018
| 09 Oct 2018
Grounding-line flux formula applied as a flux condition in numerical simulations fails for buttressed Antarctic ice streams
Ronja Reese
Potsdam Institute for Climate Impact Research (PIK), Member of the Leibniz Association, P.O. Box 60 12 03, 14412 Potsdam, Germany
University of Potsdam, Institute of Physics and Astronomy, Karl-Liebknecht-Str. 24–25, 14476 Potsdam, Germany
Ricarda Winkelmann
CORRESPONDING AUTHOR
Potsdam Institute for Climate Impact Research (PIK), Member of the Leibniz Association, P.O. Box 60 12 03, 14412 Potsdam, Germany
University of Potsdam, Institute of Physics and Astronomy, Karl-Liebknecht-Str. 24–25, 14476 Potsdam, Germany
G. Hilmar Gudmundsson
Department of Geography and Environmental Sciences, Northumbria University, Newcastle upon Tyne, NE1 8ST, UK
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- Millennial‐Scale Vulnerability of the Antarctic Ice Sheet to Regional Ice Shelf Collapse D. Martin et al. 10.1029/2018GL081229
22 citations as recorded by crossref.
- Quantifying the potential future contribution to global mean sea level from the Filchner–Ronne basin, Antarctica E. Hill et al. 10.5194/tc-15-4675-2021
- Instantaneous Antarctic ice sheet mass loss driven by thinning ice shelves G. Gudmundsson et al. 10.1029/2019GL085027
- Recent irreversible retreat phase of Pine Island Glacier B. Reed et al. 10.1038/s41558-023-01887-y
- Improvements in one-dimensional grounding-line parameterizations in an ice-sheet model with lateral variations (PSUICE3D v2.1) D. Pollard & R. DeConto 10.5194/gmd-13-6481-2020
- Bed topography and marine ice-sheet stability O. Sergienko & D. Wingham 10.1017/jog.2021.79
- Sensitivity of ice loss to uncertainty in flow law parameters in an idealized one-dimensional geometry M. Zeitz et al. 10.5194/tc-14-3537-2020
- High spatial and temporal variability in Antarctic ice discharge linked to ice shelf buttressing and bed geometry B. Miles et al. 10.1038/s41598-022-13517-2
- Seasonal variability in Antarctic ice shelf velocities forced by sea surface height variations C. Mosbeux et al. 10.5194/tc-17-2585-2023
- Effects of calving and submarine melting on steady states and stability of buttressed marine ice sheets M. Haseloff & O. Sergienko 10.1017/jog.2022.29
- Uncertainty quantification of the multi-centennial response of the Antarctic ice sheet to climate change K. Bulthuis et al. 10.5194/tc-13-1349-2019
- The comparative role of physical system processes in Hudson Strait ice stream cycling: a comprehensive model-based test of Heinrich event hypotheses K. Hank & L. Tarasov 10.5194/cp-20-2499-2024
- Ambiguous stability of glaciers at bed peaks A. Robel et al. 10.1017/jog.2022.31
- Feedback mechanisms controlling Antarctic glacial-cycle dynamics simulated with a coupled ice sheet–solid Earth model T. Albrecht et al. 10.5194/tc-18-4233-2024
- Twenty-first century response of Petermann Glacier, northwest Greenland to ice shelf loss E. Hill et al. 10.1017/jog.2020.97
- Disentangling the drivers of future Antarctic ice loss with a historically calibrated ice-sheet model V. Coulon et al. 10.5194/tc-18-653-2024
- The stability of present-day Antarctic grounding lines – Part 2: Onset of irreversible retreat of Amundsen Sea glaciers under current climate on centennial timescales cannot be excluded R. Reese et al. 10.5194/tc-17-3761-2023
- Stabilizing effect of mélange buttressing on the marine ice-cliff instability of the West Antarctic Ice Sheet T. Schlemm et al. 10.5194/tc-16-1979-2022
- Grounding-line flux conditions for marine ice-sheet systems under effective-pressure- dependent and hybrid friction laws T. Gregov et al. 10.1017/jfm.2023.760
- A thicker Antarctic ice stream during the mid-Pliocene warm period M. Mas e Braga et al. 10.1038/s43247-023-00983-3
- Velocity response of Petermann Glacier, northwest Greenland, to past and future calving events E. Hill et al. 10.5194/tc-12-3907-2018
- The Utrecht Finite Volume Ice-Sheet Model: UFEMISM (version 1.0) C. Berends et al. 10.5194/gmd-14-2443-2021
- Rapid glacier retreat rates observed in West Antarctica P. Milillo et al. 10.1038/s41561-021-00877-z
1 citations as recorded by crossref.
Latest update: 23 Nov 2024
Short summary
Accurately representing grounding-line flux is essential for modelling the evolution of the Antarctic Ice Sheet. Currently, in some large-scale ice-flow modelling studies a condition on ice flux across grounding lines is imposed using an analytically motivated parameterisation. Here we test this expression for Antarctic grounding lines and find that it provides inaccurate and partly unphysical estimates of ice flux for the highly buttressed ice streams.
Accurately representing grounding-line flux is essential for modelling the evolution of the...
