Simulating Linear Kinematic Features in Viscous‐Plastic Sea Ice Models on Quadrilateral and Triangular Grids With Different Variable Staggering
Abstract Observations in polar regions show that sea ice deformations are often narrow linear features. These long bands of deformations are referred to as Linear Kinematic Features (LKFs). Viscous‐plastic sea ice models have the capability to simulate LKFs and more generally sea ice deformations. M...
Published in: | Journal of Advances in Modeling Earth Systems |
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American Geophysical Union (AGU)
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ftdoajarticles:oai:doaj.org/article:c2b327e2621f4292b5cd802ffb7600ac 2023-05-15T18:17:13+02:00 Simulating Linear Kinematic Features in Viscous‐Plastic Sea Ice Models on Quadrilateral and Triangular Grids With Different Variable Staggering C. Mehlmann S. Danilov M. Losch J. F. Lemieux N. Hutter T. Richter P. Blain E. C. Hunke P. Korn 2021-11-01T00:00:00Z https://doi.org/10.1029/2021MS002523 https://doaj.org/article/c2b327e2621f4292b5cd802ffb7600ac EN eng American Geophysical Union (AGU) https://doi.org/10.1029/2021MS002523 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2021MS002523 https://doaj.org/article/c2b327e2621f4292b5cd802ffb7600ac Journal of Advances in Modeling Earth Systems, Vol 13, Iss 11, Pp n/a-n/a (2021) Physical geography GB3-5030 Oceanography GC1-1581 article 2021 ftdoajarticles https://doi.org/10.1029/2021MS002523 2022-12-31T13:02:02Z Abstract Observations in polar regions show that sea ice deformations are often narrow linear features. These long bands of deformations are referred to as Linear Kinematic Features (LKFs). Viscous‐plastic sea ice models have the capability to simulate LKFs and more generally sea ice deformations. Moreover, viscous‐plastic models simulate a larger number and more refined LKFs as the spatial resolution is increased. Besides grid spacing, other aspects of a numerical implementation, such as the placement of velocities and the associated degrees of freedom, may impact the formation of simulated LKFs. To explore these effects this study compares numerical solutions of sea ice models with different velocity staggering in a benchmark problem. Discretizations based on A‐,B‐, and C‐grid systems on quadrilateral meshes have similar resolution properties as an approximation with an A‐grid staggering on triangular grids (with the same total number of vertices). CD‐grid approximations with a given grid spacing have properties, specifically the number and length of simulated LKFs, that are qualitatively similar to approximations on conventional Arakawa A‐grid, B‐grid, and C‐grid approaches with half the grid spacing or less, making the CD‐discretization more efficient with respect to grid resolution. One reason for this behavior is the fact that the CD‐grid approach has a higher number of degrees of freedom to discretize the velocity field. The higher effective resolution of the CD‐discretization makes it an attractive alternative to conventional discretizations. Article in Journal/Newspaper Sea ice Directory of Open Access Journals: DOAJ Articles Journal of Advances in Modeling Earth Systems 13 11 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physical geography GB3-5030 Oceanography GC1-1581 |
spellingShingle |
Physical geography GB3-5030 Oceanography GC1-1581 C. Mehlmann S. Danilov M. Losch J. F. Lemieux N. Hutter T. Richter P. Blain E. C. Hunke P. Korn Simulating Linear Kinematic Features in Viscous‐Plastic Sea Ice Models on Quadrilateral and Triangular Grids With Different Variable Staggering |
topic_facet |
Physical geography GB3-5030 Oceanography GC1-1581 |
description |
Abstract Observations in polar regions show that sea ice deformations are often narrow linear features. These long bands of deformations are referred to as Linear Kinematic Features (LKFs). Viscous‐plastic sea ice models have the capability to simulate LKFs and more generally sea ice deformations. Moreover, viscous‐plastic models simulate a larger number and more refined LKFs as the spatial resolution is increased. Besides grid spacing, other aspects of a numerical implementation, such as the placement of velocities and the associated degrees of freedom, may impact the formation of simulated LKFs. To explore these effects this study compares numerical solutions of sea ice models with different velocity staggering in a benchmark problem. Discretizations based on A‐,B‐, and C‐grid systems on quadrilateral meshes have similar resolution properties as an approximation with an A‐grid staggering on triangular grids (with the same total number of vertices). CD‐grid approximations with a given grid spacing have properties, specifically the number and length of simulated LKFs, that are qualitatively similar to approximations on conventional Arakawa A‐grid, B‐grid, and C‐grid approaches with half the grid spacing or less, making the CD‐discretization more efficient with respect to grid resolution. One reason for this behavior is the fact that the CD‐grid approach has a higher number of degrees of freedom to discretize the velocity field. The higher effective resolution of the CD‐discretization makes it an attractive alternative to conventional discretizations. |
format |
Article in Journal/Newspaper |
author |
C. Mehlmann S. Danilov M. Losch J. F. Lemieux N. Hutter T. Richter P. Blain E. C. Hunke P. Korn |
author_facet |
C. Mehlmann S. Danilov M. Losch J. F. Lemieux N. Hutter T. Richter P. Blain E. C. Hunke P. Korn |
author_sort |
C. Mehlmann |
title |
Simulating Linear Kinematic Features in Viscous‐Plastic Sea Ice Models on Quadrilateral and Triangular Grids With Different Variable Staggering |
title_short |
Simulating Linear Kinematic Features in Viscous‐Plastic Sea Ice Models on Quadrilateral and Triangular Grids With Different Variable Staggering |
title_full |
Simulating Linear Kinematic Features in Viscous‐Plastic Sea Ice Models on Quadrilateral and Triangular Grids With Different Variable Staggering |
title_fullStr |
Simulating Linear Kinematic Features in Viscous‐Plastic Sea Ice Models on Quadrilateral and Triangular Grids With Different Variable Staggering |
title_full_unstemmed |
Simulating Linear Kinematic Features in Viscous‐Plastic Sea Ice Models on Quadrilateral and Triangular Grids With Different Variable Staggering |
title_sort |
simulating linear kinematic features in viscous‐plastic sea ice models on quadrilateral and triangular grids with different variable staggering |
publisher |
American Geophysical Union (AGU) |
publishDate |
2021 |
url |
https://doi.org/10.1029/2021MS002523 https://doaj.org/article/c2b327e2621f4292b5cd802ffb7600ac |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Journal of Advances in Modeling Earth Systems, Vol 13, Iss 11, Pp n/a-n/a (2021) |
op_relation |
https://doi.org/10.1029/2021MS002523 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2021MS002523 https://doaj.org/article/c2b327e2621f4292b5cd802ffb7600ac |
op_doi |
https://doi.org/10.1029/2021MS002523 |
container_title |
Journal of Advances in Modeling Earth Systems |
container_volume |
13 |
container_issue |
11 |
_version_ |
1766191300199055360 |