Benchmark Experiments for Higher-Order and Full-Stokes Ice Sheet Models (ISMIP-HOM)

• Main Authors: Pattyn, F., Perichon, L., Aschwanden, A., Breuer, B., Smedt, B. de, Gagliardini, O., Gudmundsson, G. H., Hindmarsh, R. C. A., Hubbard, A., Johnson, Jesse V., Kleiner, T., Konovalov, Y., Martin, C., Payne, A. J., Pollard, D., Price, S., Rückamp, M., Saito, F., Soucek, O., Sugiyama, S., Zwinger, T.
• Format: Text
• Language: unknown
• Published: ScholarWorks at University of Montana 2008
• Subjects: higher-order models; full-stoke models; ice sheets; Computer Sciences; Ice Sheet
• Online Access: https://scholarworks.umt.edu/cs_pubs/27; https://scholarworks.umt.edu/context/cs_pubs/article/1016/viewcontent/Benchmarks_experiments.pdf

We present the results of the first ice sheet model inter comparison 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.