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

• Main Authors: Pattyn, F., Perichon, L., Aschwanden, A., Breuer, B., de Smedt, B., Gagliardini, Olivier, 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., Soucek, O., Sugiyama, S., Zwinger, Thomas
• Other Authors: Laboratoire de Glaciologie Bruxelles, Université libre de Bruxelles (ULB), Institute for Atmospheric and Climate Science Zürich (IAC), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich), Institute for Geophysics, Westfälische Wilhelms-Universität Münster = University of Münster (WWU), Vakgroep Geografie, Vrije Universiteit Brussel (VUB), Laboratoire de glaciologie et géophysique de l'environnement (LGGE), Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Physical Science Division Cambridge, British Antarctic Survey (BAS), Natural Environment Research Council (NERC)-Natural Environment Research Council (NERC), Centre for Glaciology, Institute of Geography and Earth Sciences, Department of Computer Science, Moscow Engineering Physics Institute, Bristol Glaciology Centre, School of Geographical Sciences, Earth and Environmental Systems Institute PennState (EESI), Pennsylvania State University (Penn State), Penn State System-Penn State System, Frontier Research Center for Global Change (FRCGC), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Department of Geophysics Praha, Univerzita Karlova Praha, Česká republika = Charles University Prague, Czech Republic (UK), Institute of Low Temperature Science Sapporo, Hokkaido University Sapporo, Japan, Scientific Computing Ltd (CSC)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2008
• Subjects: [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology; Ice Sheet; The Cryosphere
• Online Access: https://insu.hal.science/insu-00379774; https://insu.hal.science/insu-00379774/document; https://insu.hal.science/insu-00379774/file/tc-2-95-2008.pdf

International audience 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.