Improving the simulation of landfast ice by combining tensile strength and a parameterization for grounded ridges
ABSTRACT: In some coastal regions of the Arctic Ocean, grounded ice ridges contribute to stabilizing andmaintaining a landfast ice cover. Recently, a grounding scheme representing this effect on sea ice dynamicswas introduced and tested in a viscous-plastic sea ice model. This grounding scheme, base...
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ftecolepmontreal:oai:publications.polymtl.ca:4997 2024-04-28T08:08:33+00:00 Improving the simulation of landfast ice by combining tensile strength and a parameterization for grounded ridges Lemieux, Jean-François Dupont, Frédéric Blain, Philippe Roy, François Smith, Gregory C. Flato, Gregory M. 2016-10-08 text https://publications.polymtl.ca/4997/ https://publications.polymtl.ca/4997/1/2016_Lemieux_Improving_simulation_landfast_ice_combining.pdf https://doi.org/10.1002/2016jc012006 en eng AGU Publications https://publications.polymtl.ca/4997/1/2016_Lemieux_Improving_simulation_landfast_ice_combining.pdf Lemieux, J.-F., Dupont, F., Blain, P., Roy, F., Smith, G. C., & Flato, G. M. (2016). Improving the simulation of landfast ice by combining tensile strength and a parameterization for grounded ridges. Journal of Geophysical Research : Oceans, 121(10), 7354-7368. doi:10.1002/2016jc012006 cc_by_nc_nd 4505 Glaciologie 4600 Océanographie Article de revue PeerReviewed 2016 ftecolepmontreal https://doi.org/10.1002/2016jc012006 2024-04-10T00:37:48Z ABSTRACT: In some coastal regions of the Arctic Ocean, grounded ice ridges contribute to stabilizing andmaintaining a landfast ice cover. Recently, a grounding scheme representing this effect on sea ice dynamicswas introduced and tested in a viscous-plastic sea ice model. This grounding scheme, based on a basalstress parameterization, improves the simulation of landfast ice in many regions such as in the East SiberianSea, the Laptev Sea, and along the coast of Alaska. Nevertheless, in some regions like the Kara Sea, the areaof landfast ice is systematically underestimated. This indicates that another mechanism such as ice archingis at play for maintaining the ice cover fast. To address this problem, the combination of the basal stressparameterization and tensile strength is investigated using a 0.258Pan-Arctic CICE-NEMO configuration.Both uniaxial and isotropic tensile strengths notably improve the simulation of landfast ice in the Kara Seabut also in the Laptev Sea. However, the simulated landfast ice season for the Kara Sea is too short com-pared to observations. This is especially obvious for the onset of the landfast ice season which systematical-ly occurs later in the model and with a slower build up. This suggests that improvements to the sea icethermodynamics could reduce these discrepancies with the data. Key Points - A grounding scheme is not enough to simulate landfast ice in Pan-Arctic simulations; - Both uniaxial and isotropic tensile strengths notably improve the simulation of landfast ice in deep coastal regions; - Simulated landfast ice season in the Kara Sea is still too short suggesting that thermodynamics should be improved. Article in Journal/Newspaper Arctic Arctic Ocean Kara Sea laptev Laptev Sea Sea ice Alaska École Polytechnique de Montréal: PolyPublie Journal of Geophysical Research: Oceans 121 10 7354 7368 |
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Open Polar |
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École Polytechnique de Montréal: PolyPublie |
op_collection_id |
ftecolepmontreal |
language |
English |
topic |
4505 Glaciologie 4600 Océanographie |
spellingShingle |
4505 Glaciologie 4600 Océanographie Lemieux, Jean-François Dupont, Frédéric Blain, Philippe Roy, François Smith, Gregory C. Flato, Gregory M. Improving the simulation of landfast ice by combining tensile strength and a parameterization for grounded ridges |
topic_facet |
4505 Glaciologie 4600 Océanographie |
description |
ABSTRACT: In some coastal regions of the Arctic Ocean, grounded ice ridges contribute to stabilizing andmaintaining a landfast ice cover. Recently, a grounding scheme representing this effect on sea ice dynamicswas introduced and tested in a viscous-plastic sea ice model. This grounding scheme, based on a basalstress parameterization, improves the simulation of landfast ice in many regions such as in the East SiberianSea, the Laptev Sea, and along the coast of Alaska. Nevertheless, in some regions like the Kara Sea, the areaof landfast ice is systematically underestimated. This indicates that another mechanism such as ice archingis at play for maintaining the ice cover fast. To address this problem, the combination of the basal stressparameterization and tensile strength is investigated using a 0.258Pan-Arctic CICE-NEMO configuration.Both uniaxial and isotropic tensile strengths notably improve the simulation of landfast ice in the Kara Seabut also in the Laptev Sea. However, the simulated landfast ice season for the Kara Sea is too short com-pared to observations. This is especially obvious for the onset of the landfast ice season which systematical-ly occurs later in the model and with a slower build up. This suggests that improvements to the sea icethermodynamics could reduce these discrepancies with the data. Key Points - A grounding scheme is not enough to simulate landfast ice in Pan-Arctic simulations; - Both uniaxial and isotropic tensile strengths notably improve the simulation of landfast ice in deep coastal regions; - Simulated landfast ice season in the Kara Sea is still too short suggesting that thermodynamics should be improved. |
format |
Article in Journal/Newspaper |
author |
Lemieux, Jean-François Dupont, Frédéric Blain, Philippe Roy, François Smith, Gregory C. Flato, Gregory M. |
author_facet |
Lemieux, Jean-François Dupont, Frédéric Blain, Philippe Roy, François Smith, Gregory C. Flato, Gregory M. |
author_sort |
Lemieux, Jean-François |
title |
Improving the simulation of landfast ice by combining tensile strength and a parameterization for grounded ridges |
title_short |
Improving the simulation of landfast ice by combining tensile strength and a parameterization for grounded ridges |
title_full |
Improving the simulation of landfast ice by combining tensile strength and a parameterization for grounded ridges |
title_fullStr |
Improving the simulation of landfast ice by combining tensile strength and a parameterization for grounded ridges |
title_full_unstemmed |
Improving the simulation of landfast ice by combining tensile strength and a parameterization for grounded ridges |
title_sort |
improving the simulation of landfast ice by combining tensile strength and a parameterization for grounded ridges |
publisher |
AGU Publications |
publishDate |
2016 |
url |
https://publications.polymtl.ca/4997/ https://publications.polymtl.ca/4997/1/2016_Lemieux_Improving_simulation_landfast_ice_combining.pdf https://doi.org/10.1002/2016jc012006 |
genre |
Arctic Arctic Ocean Kara Sea laptev Laptev Sea Sea ice Alaska |
genre_facet |
Arctic Arctic Ocean Kara Sea laptev Laptev Sea Sea ice Alaska |
op_relation |
https://publications.polymtl.ca/4997/1/2016_Lemieux_Improving_simulation_landfast_ice_combining.pdf Lemieux, J.-F., Dupont, F., Blain, P., Roy, F., Smith, G. C., & Flato, G. M. (2016). Improving the simulation of landfast ice by combining tensile strength and a parameterization for grounded ridges. Journal of Geophysical Research : Oceans, 121(10), 7354-7368. doi:10.1002/2016jc012006 |
op_rights |
cc_by_nc_nd |
op_doi |
https://doi.org/10.1002/2016jc012006 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
121 |
container_issue |
10 |
container_start_page |
7354 |
op_container_end_page |
7368 |
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1797577292789055488 |