A probabilistic seabed-ice keel interaction model
In some coastal regions of the Arctic Ocean, as well as in shallow seasonally ice-covered seas, grounded ice ridges contribute to stabilizing and maintaining a landfast ice cover. Recently, a grounding scheme representing this effect on sea ice dynamics was introduced and tested in a coupled ice-oce...
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ftcopernicus:oai:publications.copernicus.org:tcd97227 2023-05-15T15:04:40+02:00 A probabilistic seabed-ice keel interaction model Dupont, Frédéric Dumont, Dany Lemieux, Jean-François Dumas-Lefebvre, Elie Caya, Alain 2021-11-01 application/pdf https://doi.org/10.5194/tc-2021-273 https://tc.copernicus.org/preprints/tc-2021-273/ eng eng doi:10.5194/tc-2021-273 https://tc.copernicus.org/preprints/tc-2021-273/ eISSN: 1994-0424 Text 2021 ftcopernicus https://doi.org/10.5194/tc-2021-273 2021-11-08T17:22:30Z In some coastal regions of the Arctic Ocean, as well as in shallow seasonally ice-covered seas, grounded ice ridges contribute to stabilizing and maintaining a landfast ice cover. Recently, a grounding scheme representing this effect on sea ice dynamics was introduced and tested in a coupled ice-ocean model. This grounding scheme, based on a parameterization of ridged keel thickness linearly correlated to the mean thickness, improves the simulation of landfast ice in many regions such as in the East Siberian Sea, the Laptev Sea and along the coast of Alaska. Nevertheless, this parameterization is based solely on the mean properties of sea ice. Here, we extend the parameterization by taking into account subgridscale ice thickness distribution and bathymetry distributions, which are generally non-normal, and by computing the maximum seabed stress as a joint probability interaction between the ice and the seabed. The probabilistic approach shows a reasonably good agreement with observations and with the previously proposed grounding scheme while potentially offering more physical insights in the formation of landfast ice. Text Arctic Arctic Ocean East Siberian Sea laptev Laptev Sea Sea ice Alaska Copernicus Publications: E-Journals Arctic Arctic Ocean East Siberian Sea ENVELOPE(166.000,166.000,74.000,74.000) Laptev Sea |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
In some coastal regions of the Arctic Ocean, as well as in shallow seasonally ice-covered seas, grounded ice ridges contribute to stabilizing and maintaining a landfast ice cover. Recently, a grounding scheme representing this effect on sea ice dynamics was introduced and tested in a coupled ice-ocean model. This grounding scheme, based on a parameterization of ridged keel thickness linearly correlated to the mean thickness, improves the simulation of landfast ice in many regions such as in the East Siberian Sea, the Laptev Sea and along the coast of Alaska. Nevertheless, this parameterization is based solely on the mean properties of sea ice. Here, we extend the parameterization by taking into account subgridscale ice thickness distribution and bathymetry distributions, which are generally non-normal, and by computing the maximum seabed stress as a joint probability interaction between the ice and the seabed. The probabilistic approach shows a reasonably good agreement with observations and with the previously proposed grounding scheme while potentially offering more physical insights in the formation of landfast ice. |
format |
Text |
author |
Dupont, Frédéric Dumont, Dany Lemieux, Jean-François Dumas-Lefebvre, Elie Caya, Alain |
spellingShingle |
Dupont, Frédéric Dumont, Dany Lemieux, Jean-François Dumas-Lefebvre, Elie Caya, Alain A probabilistic seabed-ice keel interaction model |
author_facet |
Dupont, Frédéric Dumont, Dany Lemieux, Jean-François Dumas-Lefebvre, Elie Caya, Alain |
author_sort |
Dupont, Frédéric |
title |
A probabilistic seabed-ice keel interaction model |
title_short |
A probabilistic seabed-ice keel interaction model |
title_full |
A probabilistic seabed-ice keel interaction model |
title_fullStr |
A probabilistic seabed-ice keel interaction model |
title_full_unstemmed |
A probabilistic seabed-ice keel interaction model |
title_sort |
probabilistic seabed-ice keel interaction model |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-2021-273 https://tc.copernicus.org/preprints/tc-2021-273/ |
long_lat |
ENVELOPE(166.000,166.000,74.000,74.000) |
geographic |
Arctic Arctic Ocean East Siberian Sea Laptev Sea |
geographic_facet |
Arctic Arctic Ocean East Siberian Sea Laptev Sea |
genre |
Arctic Arctic Ocean East Siberian Sea laptev Laptev Sea Sea ice Alaska |
genre_facet |
Arctic Arctic Ocean East Siberian Sea laptev Laptev Sea Sea ice Alaska |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-2021-273 https://tc.copernicus.org/preprints/tc-2021-273/ |
op_doi |
https://doi.org/10.5194/tc-2021-273 |
_version_ |
1766336400188243968 |