Benchmark experiments for higher-order and full-Stokes ice sheet models (ISMIP-HOM)

Pattyn, F.; Perichon, L.; Ashwanden, A.; Breuer, B.; de Smedt, B.; Gagliardini, O.; Gudmundsson, G.H.; Hindmarsh, R.C.A.; Hubbard, A.; Johnson, J.V.; Kleiner, T.; Konovalov, Y.; Martin, C.; Payne, A.J.; Pollard, D.; Price, S.; Rückamp, M.; Saito, F.; Souček, O.; Sugiyama, S.; Zwinger, T.

Pattyn, F.; Perichon, L.; Ashwanden, A.; Breuer, B.; de Smedt, B.; Gagliardini, O.; Gudmundsson, G.H. ORCID: https://orcid.org/0000-0003-4236-5369; Hindmarsh, R.C.A. ORCID: https://orcid.org/0000-0003-1633-2416; Hubbard, A.; Johnson, J.V.; Kleiner, T.; Konovalov, Y.; Martin, C. ORCID: https://orcid.org/0000-0002-2661-169X; Payne, A.J.; Pollard, D.; Price, S.; Rückamp, M.; Saito, F.; Souček, O.; Sugiyama, S.; Zwinger, T.. 2008 Benchmark experiments for higher-order and full-Stokes ice sheet models (ISMIP-HOM). The Cryosphere, 2 (2). 95-108. 10.5194/tc-2-95-2008

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Abstract

We present the results of the first ice sheet model intercomparison project for higher-order and full-Stokes ice sheet models. These models are compared and verified in a series of six experiments of which one has an analytical solution obtained from a perturbation analysis. The experiments are applied to both 2-D and 3-D geometries; five experiments are steady-state diagnostic, and one has a time-dependent prognostic solution. All participating models give results that are in close agreement. A clear distinction can be made between higher-order models and those that solve the full system of equations. The full-Stokes models show a much smaller spread, hence are in better agreement with one another and with the analytical solution.

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