Simulating Sea‐Ice Deformation in Viscous‐Plastic Sea‐Ice Models With CD‐Grids
Abstract Linear kinematic features (LKFs) are found everywhere in the Arctic sea‐ice cover. They are strongly localized deformations often associated with the formation of leads and pressure ridges. In viscous‐plastic (VP) sea‐ice models, the simulation of LKFs depends on several factors such as the...
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American Geophysical Union (AGU)
2023
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ftdoajarticles:oai:doaj.org/article:5e3bd884f6d34f12a05416cd2bc89cb0 2023-10-01T03:54:09+02:00 Simulating Sea‐Ice Deformation in Viscous‐Plastic Sea‐Ice Models With CD‐Grids C. Mehlmann G. Capodaglio S. Danilov 2023-08-01T00:00:00Z https://doi.org/10.1029/2023MS003696 https://doaj.org/article/5e3bd884f6d34f12a05416cd2bc89cb0 EN eng American Geophysical Union (AGU) https://doi.org/10.1029/2023MS003696 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2023MS003696 https://doaj.org/article/5e3bd884f6d34f12a05416cd2bc89cb0 Journal of Advances in Modeling Earth Systems, Vol 15, Iss 8, Pp n/a-n/a (2023) sea‐ice dynamics CD‐grids linear kinematic features nonconforming finite elements Physical geography GB3-5030 Oceanography GC1-1581 article 2023 ftdoajarticles https://doi.org/10.1029/2023MS003696 2023-09-03T00:54:21Z Abstract Linear kinematic features (LKFs) are found everywhere in the Arctic sea‐ice cover. They are strongly localized deformations often associated with the formation of leads and pressure ridges. In viscous‐plastic (VP) sea‐ice models, the simulation of LKFs depends on several factors such as the grid resolution, the numerical solver convergence, and the placement of the variables on the mesh. In this study, we compare two recently proposed discretization with a CD‐grid placement with respect to their ability to reproduce LKFs. The first (CD1) is based on a nonconforming finite element discretization, whereas the second (CD2) uses a conforming subgrid discretization. To analyze their resolution properties, we evaluate runs from different models (e.g., FESOM, MPAS) on a benchmark problem using quadrilateral, hexagonal and triangular meshes. Our findings show that the CD1 setup simulates more deformation structure than the CD2 setup. This highlights the importance of the type of spatial discretization for the simulation of LKFs. Due to the higher number of degrees of freedom, both CD‐grids resolve more LKFs than traditional A, B, and C‐grids at fixed mesh level. This is an advantage of the CD‐grid approach, as high spatial mesh resolution is needed in VP sea‐ice models to simulate LKFs. Article in Journal/Newspaper Arctic Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Journal of Advances in Modeling Earth Systems 15 8 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
sea‐ice dynamics CD‐grids linear kinematic features nonconforming finite elements Physical geography GB3-5030 Oceanography GC1-1581 |
spellingShingle |
sea‐ice dynamics CD‐grids linear kinematic features nonconforming finite elements Physical geography GB3-5030 Oceanography GC1-1581 C. Mehlmann G. Capodaglio S. Danilov Simulating Sea‐Ice Deformation in Viscous‐Plastic Sea‐Ice Models With CD‐Grids |
topic_facet |
sea‐ice dynamics CD‐grids linear kinematic features nonconforming finite elements Physical geography GB3-5030 Oceanography GC1-1581 |
description |
Abstract Linear kinematic features (LKFs) are found everywhere in the Arctic sea‐ice cover. They are strongly localized deformations often associated with the formation of leads and pressure ridges. In viscous‐plastic (VP) sea‐ice models, the simulation of LKFs depends on several factors such as the grid resolution, the numerical solver convergence, and the placement of the variables on the mesh. In this study, we compare two recently proposed discretization with a CD‐grid placement with respect to their ability to reproduce LKFs. The first (CD1) is based on a nonconforming finite element discretization, whereas the second (CD2) uses a conforming subgrid discretization. To analyze their resolution properties, we evaluate runs from different models (e.g., FESOM, MPAS) on a benchmark problem using quadrilateral, hexagonal and triangular meshes. Our findings show that the CD1 setup simulates more deformation structure than the CD2 setup. This highlights the importance of the type of spatial discretization for the simulation of LKFs. Due to the higher number of degrees of freedom, both CD‐grids resolve more LKFs than traditional A, B, and C‐grids at fixed mesh level. This is an advantage of the CD‐grid approach, as high spatial mesh resolution is needed in VP sea‐ice models to simulate LKFs. |
format |
Article in Journal/Newspaper |
author |
C. Mehlmann G. Capodaglio S. Danilov |
author_facet |
C. Mehlmann G. Capodaglio S. Danilov |
author_sort |
C. Mehlmann |
title |
Simulating Sea‐Ice Deformation in Viscous‐Plastic Sea‐Ice Models With CD‐Grids |
title_short |
Simulating Sea‐Ice Deformation in Viscous‐Plastic Sea‐Ice Models With CD‐Grids |
title_full |
Simulating Sea‐Ice Deformation in Viscous‐Plastic Sea‐Ice Models With CD‐Grids |
title_fullStr |
Simulating Sea‐Ice Deformation in Viscous‐Plastic Sea‐Ice Models With CD‐Grids |
title_full_unstemmed |
Simulating Sea‐Ice Deformation in Viscous‐Plastic Sea‐Ice Models With CD‐Grids |
title_sort |
simulating sea‐ice deformation in viscous‐plastic sea‐ice models with cd‐grids |
publisher |
American Geophysical Union (AGU) |
publishDate |
2023 |
url |
https://doi.org/10.1029/2023MS003696 https://doaj.org/article/5e3bd884f6d34f12a05416cd2bc89cb0 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
Journal of Advances in Modeling Earth Systems, Vol 15, Iss 8, Pp n/a-n/a (2023) |
op_relation |
https://doi.org/10.1029/2023MS003696 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2023MS003696 https://doaj.org/article/5e3bd884f6d34f12a05416cd2bc89cb0 |
op_doi |
https://doi.org/10.1029/2023MS003696 |
container_title |
Journal of Advances in Modeling Earth Systems |
container_volume |
15 |
container_issue |
8 |
_version_ |
1778521536278298624 |