On the Damping Time Scale of EVP Sea Ice Dynamics
We propose to make the damping time scale, which governs the decay of pseudo-elastic waves in the Elastic Viscous Plastic (EVP) sea-ice solvers, independent of the external time step and large enough to warrant numerical stability for a moderate number of internal time steps. A necessary condition i...
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American Geophysical Union (AGU)
2021
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Online Access: | https://epic.awi.de/id/eprint/57520/ https://epic.awi.de/id/eprint/57520/1/Danilov_EVP_2021.pdf https://hdl.handle.net/10013/epic.afe79f3a-bc56-4be9-80cd-90ed0614b8c0 |
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ftawi:oai:epic.awi.de:57520 2023-07-16T03:56:57+02:00 On the Damping Time Scale of EVP Sea Ice Dynamics Danilov, Sergey Koldunov, Nikolay V Sidorenko, Dmitry Scholz, Patrick Wang, Qiang 2021-10 application/pdf https://epic.awi.de/id/eprint/57520/ https://epic.awi.de/id/eprint/57520/1/Danilov_EVP_2021.pdf https://hdl.handle.net/10013/epic.afe79f3a-bc56-4be9-80cd-90ed0614b8c0 unknown American Geophysical Union (AGU) https://epic.awi.de/id/eprint/57520/1/Danilov_EVP_2021.pdf Danilov, S. orcid:0000-0001-8098-182X , Koldunov, N. V. orcid:0000-0002-3365-8146 , Sidorenko, D. orcid:0000-0001-8579-6068 , Scholz, P. orcid:0000-0003-2692-7624 and Wang, Q. orcid:0000-0002-2704-5394 (2021) On the Damping Time Scale of EVP Sea Ice Dynamics , Journal of Advances in Modeling Earth Systems, 13 (10) . doi:10.1029/2021ms002561 <https://doi.org/10.1029/2021ms002561> , hdl:10013/epic.afe79f3a-bc56-4be9-80cd-90ed0614b8c0 EPIC3Journal of Advances in Modeling Earth Systems, American Geophysical Union (AGU), 13(10), ISSN: 1942-2466 Article NonPeerReviewed 2021 ftawi https://doi.org/10.1029/2021ms002561 2023-06-25T23:20:01Z We propose to make the damping time scale, which governs the decay of pseudo-elastic waves in the Elastic Viscous Plastic (EVP) sea-ice solvers, independent of the external time step and large enough to warrant numerical stability for a moderate number of internal time steps. A necessary condition is that the forcing on sea ice varies slowly on the damping time scale, in which case an EVP solution may still approach a Viscous Plastic one, but on a time scale longer than a single external time step. In this case, the EVP method becomes very close to the recently proposed modified EVP (mEVP) method in terms of stability and simulated behavior. In a simple test case dealing with sea ice breaking under the forcing of a moving cyclone, the EVP method with an enlarged damping time scale can simulate linear kinematic features which are very similar to those from the traditional EVP implementation, although a much smaller number of internal time steps is used. There is more difference in sea-ice thickness and linear kinematic features simulated in a realistic Arctic configuration between using the traditional and our suggested choices of EVP damping time scales, but it is minor considering model uncertainties associated with choices of many other parameters in sea-ice models. Article in Journal/Newspaper Arctic Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Journal of Advances in Modeling Earth Systems 13 10 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
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description |
We propose to make the damping time scale, which governs the decay of pseudo-elastic waves in the Elastic Viscous Plastic (EVP) sea-ice solvers, independent of the external time step and large enough to warrant numerical stability for a moderate number of internal time steps. A necessary condition is that the forcing on sea ice varies slowly on the damping time scale, in which case an EVP solution may still approach a Viscous Plastic one, but on a time scale longer than a single external time step. In this case, the EVP method becomes very close to the recently proposed modified EVP (mEVP) method in terms of stability and simulated behavior. In a simple test case dealing with sea ice breaking under the forcing of a moving cyclone, the EVP method with an enlarged damping time scale can simulate linear kinematic features which are very similar to those from the traditional EVP implementation, although a much smaller number of internal time steps is used. There is more difference in sea-ice thickness and linear kinematic features simulated in a realistic Arctic configuration between using the traditional and our suggested choices of EVP damping time scales, but it is minor considering model uncertainties associated with choices of many other parameters in sea-ice models. |
format |
Article in Journal/Newspaper |
author |
Danilov, Sergey Koldunov, Nikolay V Sidorenko, Dmitry Scholz, Patrick Wang, Qiang |
spellingShingle |
Danilov, Sergey Koldunov, Nikolay V Sidorenko, Dmitry Scholz, Patrick Wang, Qiang On the Damping Time Scale of EVP Sea Ice Dynamics |
author_facet |
Danilov, Sergey Koldunov, Nikolay V Sidorenko, Dmitry Scholz, Patrick Wang, Qiang |
author_sort |
Danilov, Sergey |
title |
On the Damping Time Scale of EVP Sea Ice Dynamics |
title_short |
On the Damping Time Scale of EVP Sea Ice Dynamics |
title_full |
On the Damping Time Scale of EVP Sea Ice Dynamics |
title_fullStr |
On the Damping Time Scale of EVP Sea Ice Dynamics |
title_full_unstemmed |
On the Damping Time Scale of EVP Sea Ice Dynamics |
title_sort |
on the damping time scale of evp sea ice dynamics |
publisher |
American Geophysical Union (AGU) |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/57520/ https://epic.awi.de/id/eprint/57520/1/Danilov_EVP_2021.pdf https://hdl.handle.net/10013/epic.afe79f3a-bc56-4be9-80cd-90ed0614b8c0 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
EPIC3Journal of Advances in Modeling Earth Systems, American Geophysical Union (AGU), 13(10), ISSN: 1942-2466 |
op_relation |
https://epic.awi.de/id/eprint/57520/1/Danilov_EVP_2021.pdf Danilov, S. orcid:0000-0001-8098-182X , Koldunov, N. V. orcid:0000-0002-3365-8146 , Sidorenko, D. orcid:0000-0001-8579-6068 , Scholz, P. orcid:0000-0003-2692-7624 and Wang, Q. orcid:0000-0002-2704-5394 (2021) On the Damping Time Scale of EVP Sea Ice Dynamics , Journal of Advances in Modeling Earth Systems, 13 (10) . doi:10.1029/2021ms002561 <https://doi.org/10.1029/2021ms002561> , hdl:10013/epic.afe79f3a-bc56-4be9-80cd-90ed0614b8c0 |
op_doi |
https://doi.org/10.1029/2021ms002561 |
container_title |
Journal of Advances in Modeling Earth Systems |
container_volume |
13 |
container_issue |
10 |
_version_ |
1771543483063992320 |