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

Stephen Cornford Orcid Logo, 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 Orcid Logo

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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...

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Published in: The Cryosphere
ISSN: 1994-0424
Published: Copernicus GmbH 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa54579
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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 &#x2013; notably the difference between the simpler and more complete treatments of englacial stress but also the differences between numerical methods &#x2013; taking a secondary role.</abstract><type>Journal Article</type><journal>The Cryosphere</journal><volume>14</volume><journalNumber>7</journalNumber><paginationStart>2283</paginationStart><paginationEnd>2301</paginationEnd><publisher>Copernicus GmbH</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint/><issnElectronic>1994-0424</issnElectronic><keywords/><publishedDay>21</publishedDay><publishedMonth>7</publishedMonth><publishedYear>2020</publishedYear><publishedDate>2020-07-21</publishedDate><doi>10.5194/tc-14-2283-2020</doi><url/><notes/><college>COLLEGE NANME</college><department>Geography</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>SGE</DepartmentCode><institution>Swansea University</institution><apcterm/><lastEdited>2021-03-03T11:06:10.1418692</lastEdited><Created>2020-07-01T12:32:56.2190795</Created><path><level id="1">Professional Services</level><level id="2">ISS - Uncategorised</level></path><authors><author><firstname>Stephen</firstname><surname>Cornford</surname><orcid>0000-0003-1844-274X</orcid><order>1</order></author><author><firstname>Helene</firstname><surname>Seroussi</surname><order>2</order></author><author><firstname>Xylar S.</firstname><surname>Asay-Davis</surname><order>3</order></author><author><firstname>G. 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spelling 2021-03-03T11:06:10.1418692 v2 54579 2020-07-01 Results of the third Marine Ice Sheet Model Intercomparison Project (MISMIP+) 17ae00ff2346b8c23d7e2b34341610a4 0000-0003-1844-274X Stephen Cornford Stephen Cornford true false 2020-07-01 SGE 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. Journal Article The Cryosphere 14 7 2283 2301 Copernicus GmbH 1994-0424 21 7 2020 2020-07-21 10.5194/tc-14-2283-2020 COLLEGE NANME Geography COLLEGE CODE SGE Swansea University 2021-03-03T11:06:10.1418692 2020-07-01T12:32:56.2190795 Professional Services ISS - Uncategorised Stephen Cornford 0000-0003-1844-274X 1 Helene Seroussi 2 Xylar S. Asay-Davis 3 G. Hilmar Gudmundsson 4 Rob Arthern 5 Chris Borstad 6 Julia Christmann 7 Thiago Dias dos Santos 8 Johannes Feldmann 9 Daniel Goldberg 10 Matthew J. Hoffman 11 Angelika Humbert 12 Thomas Kleiner 13 Gunter Leguy 14 William H. Lipscomb 15 Nacho Merino 16 Gaël Durand 17 Mathieu Morlighem 18 David Pollard 19 Martin Rückamp 20 C. Rosie Williams 21 Hongju Yu 22 54579__17745__b87e1a56e7514f71804dab5bb386330c.pdf tc-14-2283-2020.pdf 2020-07-21T17:12:06.5578249 Output 4397140 application/pdf Version of Record true This work is distributed under the Creative Commons Attribution 4.0 License. true eng https://creativecommons.org/licenses/by/4.0/
title Results of the third Marine Ice Sheet Model Intercomparison Project (MISMIP+)
spellingShingle Results of the third Marine Ice Sheet Model Intercomparison Project (MISMIP+)
Stephen Cornford
title_short Results of the third Marine Ice Sheet Model Intercomparison Project (MISMIP+)
title_full Results of the third Marine Ice Sheet Model Intercomparison Project (MISMIP+)
title_fullStr Results of the third Marine Ice Sheet Model Intercomparison Project (MISMIP+)
title_full_unstemmed Results of the third Marine Ice Sheet Model Intercomparison Project (MISMIP+)
title_sort Results of the third Marine Ice Sheet Model Intercomparison Project (MISMIP+)
author_id_str_mv 17ae00ff2346b8c23d7e2b34341610a4
author_id_fullname_str_mv 17ae00ff2346b8c23d7e2b34341610a4_***_Stephen Cornford
author Stephen Cornford
author2 Stephen Cornford
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
format Journal article
container_title The Cryosphere
container_volume 14
container_issue 7
container_start_page 2283
publishDate 2020
institution Swansea University
issn 1994-0424
doi_str_mv 10.5194/tc-14-2283-2020
publisher Copernicus GmbH
college_str Professional Services
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hierarchy_top_id professionalservices
hierarchy_top_title Professional Services
hierarchy_parent_id professionalservices
hierarchy_parent_title Professional Services
department_str ISS - Uncategorised{{{_:::_}}}Professional Services{{{_:::_}}}ISS - Uncategorised
document_store_str 1
active_str 0
description 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.
published_date 2020-07-21T04:08:12Z
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score 11.037056

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