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Results of the third Marine Ice Sheet Model Intercomparison Project (MISMIP+)

Urheber*innen

Cornford,  Stephen L.
External Organizations;

Seroussi,  Helene
External Organizations;

Asay-Davis,  Xylar S.
External Organizations;

Gudmundsson,  G. Hilmar
External Organizations;

Arthern,  Rob
External Organizations;

Borstad,  Chris
External Organizations;

Christmann,  Julia
External Organizations;

Dias dos Santos,  Thiago
External Organizations;

/persons/resource/johannes.feldmann

Feldmann,  Johannes
Potsdam Institute for Climate Impact Research;

Goldberg,  Daniel
External Organizations;

Hoffman,  Matthew J.
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Humbert,  Angelika
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Kleiner,  Thomas
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Leguy,  Gunter
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Lipscomb,  William H.
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Merino,  Nacho
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Durand,  Gaël
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Morlighem,  Mathieu
External Organizations;

Pollard,  David
External Organizations;

Rückamp,  Martin
External Organizations;

Williams,  C. Rosie
External Organizations;

Yu,  Hongju
External Organizations;

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Volltexte (frei zugänglich)

24440oa.pdf
(Verlagsversion), 5MB

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Zitation

Cornford, S. L., Seroussi, H., Asay-Davis, X. S., Gudmundsson, G. H., Arthern, R., Borstad, C., Christmann, J., Dias dos Santos, T., Feldmann, J., Goldberg, D., Hoffman, M. J., Humbert, A., Kleiner, T., Leguy, G., Lipscomb, W. H., Merino, N., Durand, G., Morlighem, M., Pollard, D., Rückamp, M., Williams, C. R., Yu, H. (2020): Results of the third Marine Ice Sheet Model Intercomparison Project (MISMIP+). - The Cryosphere, 14, 7, 2283-2301.
https://doi.org/10.5194/tc-14-2283-2020


Zitierlink: https://publications.pik-potsdam.de/pubman/item/item_24440
Zusammenfassung
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.