Articles | Volume 14, issue 10
https://doi.org/10.5194/tc-14-3537-2020
https://doi.org/10.5194/tc-14-3537-2020
Research article
 | 
27 Oct 2020
Research article |  | 27 Oct 2020

Sensitivity of ice loss to uncertainty in flow law parameters in an idealized one-dimensional geometry

Maria Zeitz, Anders Levermann, and Ricarda Winkelmann

Related authors

The evolution of future Antarctic surface melt using PISM-dEBM-simple
Julius Garbe, Maria Zeitz, Uta Krebs-Kanzow, and Ricarda Winkelmann
The Cryosphere Discuss., https://doi.org/10.5194/tc-2022-249,https://doi.org/10.5194/tc-2022-249, 2023
Preprint under review for TC
Short summary
Dynamic regimes of the Greenland Ice Sheet emerging from interacting melt–elevation and glacial isostatic adjustment feedbacks
Maria Zeitz, Jan M. Haacker, Jonathan F. Donges, Torsten Albrecht, and Ricarda Winkelmann
Earth Syst. Dynam., 13, 1077–1096, https://doi.org/10.5194/esd-13-1077-2022,https://doi.org/10.5194/esd-13-1077-2022, 2022
Short summary
Impact of the melt–albedo feedback on the future evolution of the Greenland Ice Sheet with PISM-dEBM-simple
Maria Zeitz, Ronja Reese, Johanna Beckmann, Uta Krebs-Kanzow, and Ricarda Winkelmann
The Cryosphere, 15, 5739–5764, https://doi.org/10.5194/tc-15-5739-2021,https://doi.org/10.5194/tc-15-5739-2021, 2021
Short summary

Related subject area

Discipline: Ice sheets | Subject: Ice Physics
Ice fabrics in two-dimensional flows: beyond pure and simple shear
Daniel H. Richards, Samuel S. Pegler, and Sandra Piazolo
The Cryosphere, 16, 4571–4592, https://doi.org/10.5194/tc-16-4571-2022,https://doi.org/10.5194/tc-16-4571-2022, 2022
Short summary
Modeling enhanced firn densification due to strain softening
Falk M. Oraschewski and Aslak Grinsted
The Cryosphere, 16, 2683–2700, https://doi.org/10.5194/tc-16-2683-2022,https://doi.org/10.5194/tc-16-2683-2022, 2022
Short summary
Polarimetric radar reveals the spatial distribution of ice fabric at domes and divides in East Antarctica
M. Reza Ershadi, Reinhard Drews, Carlos Martín, Olaf Eisen, Catherine Ritz, Hugh Corr, Julia Christmann, Ole Zeising, Angelika Humbert, and Robert Mulvaney
The Cryosphere, 16, 1719–1739, https://doi.org/10.5194/tc-16-1719-2022,https://doi.org/10.5194/tc-16-1719-2022, 2022
Short summary
Geothermal heat flux from measured temperature profiles in deep ice boreholes in Antarctica
Pavel Talalay, Yazhou Li, Laurent Augustin, Gary D. Clow, Jialin Hong, Eric Lefebvre, Alexey Markov, Hideaki Motoyama, and Catherine Ritz
The Cryosphere, 14, 4021–4037, https://doi.org/10.5194/tc-14-4021-2020,https://doi.org/10.5194/tc-14-4021-2020, 2020
Observation of an optical anisotropy in the deep glacial ice at the geographic South Pole using a laser dust logger
Martin Rongen, Ryan Carlton Bay, and Summer Blot
The Cryosphere, 14, 2537–2543, https://doi.org/10.5194/tc-14-2537-2020,https://doi.org/10.5194/tc-14-2537-2020, 2020
Short summary

Cited articles

Aschwanden, A., Fahnestock, M. A., and Truffer, M.: Complex Greenland outlet glacier flow captured, Nat. Commun., 7, 10524, https://doi.org/10.1038/ncomms10524, 2016. a
Aschwanden, A., Fahnestock, M. A., Truffer, M., Brinkerhoff, D. J., Hock, R., Khroulev, C., Mottram, R., and Khan, S. A.: Contribution of the Greenland Ice Sheet to sea level over the next millennium, Sci. Adv., 5, eaav9396, https://doi.org/10.1126/sciadv.aav9396, 2019. a, b
Bamber, J. L., Oppenheimer, M., Kopp, R. E., Aspinall, W. P., and Cooke, R. M.: Ice sheet contributions to future sea-level rise from structured expert judgment, P. Natl. Acad. Sci. USA, 116, 11195–11200, https://doi.org/10.1073/pnas.1817205116,2019. a
Barnes, P., Tabor, D., and Walker, J. C. F.: The friction and creep of polycrystalline ice, P. Roy. Soc. A-Math. Phy., 324, 127–155, 1971. a, b
Bons, P. D., Kleiner, T., Llorens, M.-G., Prior, D. J., Sachau, T., Weikusat, I., and Jansen, D.: Greenland Ice Sheet: Higher Nonlinearity of Ice Flow Significantly Reduces Estimated Basal Motion, Geophys. Res. Lett., 45, 6542–6548, https://doi.org/10.1029/2018GL078356, 2018. a, b, c, d
Download
Short summary
The flow of ice drives mass losses in the large ice sheets. Sea-level rise projections rely on ice-sheet models, solving the physics of ice flow and melt. Unfortunately the parameters in the physics of flow are uncertain. Here we show, in an idealized setup, that these uncertainties can double flow-driven mass losses within the possible range of parameters. It is possible that this uncertainty carries over to realistic sea-level rise projections.