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Volume 11, issue 1
The Cryosphere, 11, 247-265, 2017
https://doi.org/10.5194/tc-11-247-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
The Cryosphere, 11, 247-265, 2017
https://doi.org/10.5194/tc-11-247-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 27 Jan 2017

Research article | 27 Jan 2017

Comparison of hybrid schemes for the combination of shallow approximations in numerical simulations of the Antarctic Ice Sheet

Jorge Bernales et al.
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Ahlkrona, J., Loetstedt, P., Kirchner, N., and Zwinger, T.: Dynamically coupling the non-linear Stokes equations with the Shallow Ice Approximation in glaciology: Description and first applications of the ISCAL method, J. Comput. Phys., 308, 1–19, 2016.
Alley, R. B., Blankenship, D. D., Bentley, C. R., and Rooney, S.: Till beneath ice stream B: 3. Till deformation: evidence and implications, J. Geophys. Res., 92, 8921–8929, 1987.
Arthern, R. J. and Gudmundsson, G. H.: Initialization of ice-sheet forecasts viewed as an inverse Robin problem, J. Glaciol., 56, 527–533, 2010.
Arthern, R. J., Hindmarsh, R. C., and Williams, C. R.: Flow speed within the Antarctic ice sheet and its controls inferred from satellite observations, J. Geophys. Res.-Earth, 120, 1171–1188, 2015.
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This study offers a hard test to the models commonly used to simulate an ice sheet evolution over multimillenial timescales. Using an example of the Antarctic Ice Sheet, we evaluate the performance of such models against observations and highlight a strong impact of different approaches towards modeling rapidly flowing ice sectors. In particular, our results show that inferences of previous studies may need significant adjustments to be adopted by a different type of ice sheet models.
This study offers a hard test to the models commonly used to simulate an ice sheet evolution...
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