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Results of the third Marine Ice Sheet Model Intercomparison Project (MISMIP+)
,
Helene Seroussi,
Xylar S. Asay-Davis,
G. Hilmar Gudmundsson,
Rob Arthern,
Chris Borstad,
Julia Christmann,
Thiago Dias dos Santos,
Johannes Feldmann,
Daniel Goldberg,
Matthew J. Hoffman,
Angelika Humbert,
Thomas Kleiner,
Gunter Leguy,
William H. Lipscomb,
Nacho Merino,
Gaël Durand,
Mathieu Morlighem,
David Pollard,
Martin Rückamp,
C. Rosie Williams,
Hongju Yu
The Cryosphere, Volume: 14, Issue: 7, Pages: 2283 - 2301
Swansea University Author:
Stephen Cornford
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DOI (Published version): 10.5194/tc-14-2283-2020
Abstract
We present the result of the third Marine Ice Sheet Model Intercomparison Project, MISMIP+. MISMIP+ is intended to be a benchmark for ice-flow models which include fast sliding marine ice streams and floating ice shelves and in particular a treatment of viscous stress that is sufficient to model but...
| Published in: | The Cryosphere |
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| ISSN: | 1994-0424 |
| Published: |
Copernicus GmbH
2020
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| Online Access: |
Check full text
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa54579 |
| Abstract: |
We present the result of the third Marine Ice Sheet Model Intercomparison Project, MISMIP+. MISMIP+ is intended to be a benchmark for ice-flow models which include fast sliding marine ice streams and floating ice shelves and in particular a treatment of viscous stress that is sufficient to model buttressing, where upstream ice flow is restrained by a downstream ice shelf. A set of idealized experiments first tests that models are able to maintain a steady state with the grounding line located on a retrograde slope due to buttressing and then explore scenarios where a reduction in that buttressing causes ice stream acceleration, thinning, and grounding line retreat. The majority of participating models passed the first test and then produced similar responses to the loss of buttressing. We find that the most important distinction between models in this particular type of simulation is in the treatment of sliding at the bed, with other distinctions – notably the difference between the simpler and more complete treatments of englacial stress but also the differences between numerical methods – taking a secondary role. |
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| College: |
Faculty of Science and Engineering |
| Funders: |
The work of Thomas Kleiner has been conducted in the framework of the PalMod project (FKZ: 01LP1511B), supported by the German Federal Ministry of Education and Research (BMBF) as the Research for Sustainability initiative (FONA). Support for Matthew Hoffman and the MALI model was provided through the Scientific Discovery through Advanced Computing (SciDAC) program and the Energy Exascale Earth System Model (E3SM) project funded by the U.S. Department of Energy (DOE), Office of Science, Biological and Environmental Research, and Advanced Scientific Computing Research programs. This research used resources of the National Energy Research Scientific Computing Center, a DOE Office of Science user facility supported by the Office of Science of the U.S. Department of Energy under contract DE-AC02-05CH11231, and resources provided by the Los Alamos National Laboratory Institutional Computing Program, which is supported by the U.S. Department of Energy National Nuclear Security Administration under contract DE-AC52-06NA25396. The material provided for the CISM model is based upon work supported by the National Center for Atmospheric Research, which is a major facility sponsored by the National Science Foundation under cooperative agreement no. 1852977. |
| Issue: |
7 |
| Start Page: |
2283 |
| End Page: |
2301 |