Arctic sea ice mass balance in a new coupled ice-ocean model using a brittle rheology framework
Sea ice is a key component of the Earth's climate system as it modulates the energy exchanges and associated feedback processes at the air-sea interface in polar regions. These exchanges strongly depend on openings in the sea ice cover, which are associated with fine-scale sea ice deformations,...
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ftunivnantes:oai:HAL:hal-03796674v1 2023-05-15T14:29:20+02:00 Arctic sea ice mass balance in a new coupled ice-ocean model using a brittle rheology framework Boutin, Guillaume Ólason, Einar, Rampal, Pierre Regan, Heather Lique, Camille Talandier, Claude Brodeau, Laurent Ricker, Robert Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) 2022-10-04 https://hal.science/hal-03796674 https://hal.science/hal-03796674/document https://hal.science/hal-03796674/file/tc-2022-142.pdf https://doi.org/10.5194/tc-2022-142 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-2022-142 hal-03796674 https://hal.science/hal-03796674 https://hal.science/hal-03796674/document https://hal.science/hal-03796674/file/tc-2022-142.pdf doi:10.5194/tc-2022-142 info:eu-repo/semantics/OpenAccess https://hal.science/hal-03796674 2022 [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/preprint Preprints, Working Papers, . 2022 ftunivnantes https://doi.org/10.5194/tc-2022-142 2023-03-01T01:25:41Z Sea ice is a key component of the Earth's climate system as it modulates the energy exchanges and associated feedback processes at the air-sea interface in polar regions. These exchanges strongly depend on openings in the sea ice cover, which are associated with fine-scale sea ice deformations, but the importance of these processes remains poorly understood as most numerical models struggle to represent these deformations without using very costly horizontal resolutions (2 km). In this study, we present results from a 12 km resolution ocean-sea-ice coupled model, the first that uses a brittle rheology to represent the mechanical behaviour of sea ice. Using this rheology enables the reproduction of the observed characteristics and complexity of fine-scale sea ice deformations with little dependency on the mesh resolution. We evaluate and discuss the Arctic sea ice mass balance of this coupled model for the period 2000-2018. We first assess sea ice quantities relevant for climate (volume, extent and drift) and find that they are consistent with satellite observations. We evaluate components of the mass balance for which observations are available, i.e. sea ice volume export through Fram Strait and winter mass balance in the Arctic marginal seas for the period 2003-2018. The model performs well, particularly for the dynamic contribution to the winter mass balance. We discuss the relative contributions of dynamics and thermodynamics to the sea ice mass balance in the Arctic Basin for 2000-2018. Benefitting from the model's ability to reproduce fine-scale sea ice deformations, we estimate that the formation of sea ice in leads and polynyas contributes to 25%-35% of the total ice growth in pack ice from January to March, with a significant increase over 2000-2018. This coupled framework opens up new opportunities to understand and quantify the interplay between small-scale sea ice dynamics and ocean properties. Report Arctic Basin Arctic Fram Strait Sea ice Université de Nantes: HAL-UNIV-NANTES Arctic |
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Open Polar |
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Université de Nantes: HAL-UNIV-NANTES |
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ftunivnantes |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
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[SDU]Sciences of the Universe [physics] Boutin, Guillaume Ólason, Einar, Rampal, Pierre Regan, Heather Lique, Camille Talandier, Claude Brodeau, Laurent Ricker, Robert Arctic sea ice mass balance in a new coupled ice-ocean model using a brittle rheology framework |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
Sea ice is a key component of the Earth's climate system as it modulates the energy exchanges and associated feedback processes at the air-sea interface in polar regions. These exchanges strongly depend on openings in the sea ice cover, which are associated with fine-scale sea ice deformations, but the importance of these processes remains poorly understood as most numerical models struggle to represent these deformations without using very costly horizontal resolutions (2 km). In this study, we present results from a 12 km resolution ocean-sea-ice coupled model, the first that uses a brittle rheology to represent the mechanical behaviour of sea ice. Using this rheology enables the reproduction of the observed characteristics and complexity of fine-scale sea ice deformations with little dependency on the mesh resolution. We evaluate and discuss the Arctic sea ice mass balance of this coupled model for the period 2000-2018. We first assess sea ice quantities relevant for climate (volume, extent and drift) and find that they are consistent with satellite observations. We evaluate components of the mass balance for which observations are available, i.e. sea ice volume export through Fram Strait and winter mass balance in the Arctic marginal seas for the period 2003-2018. The model performs well, particularly for the dynamic contribution to the winter mass balance. We discuss the relative contributions of dynamics and thermodynamics to the sea ice mass balance in the Arctic Basin for 2000-2018. Benefitting from the model's ability to reproduce fine-scale sea ice deformations, we estimate that the formation of sea ice in leads and polynyas contributes to 25%-35% of the total ice growth in pack ice from January to March, with a significant increase over 2000-2018. This coupled framework opens up new opportunities to understand and quantify the interplay between small-scale sea ice dynamics and ocean properties. |
author2 |
Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) |
format |
Report |
author |
Boutin, Guillaume Ólason, Einar, Rampal, Pierre Regan, Heather Lique, Camille Talandier, Claude Brodeau, Laurent Ricker, Robert |
author_facet |
Boutin, Guillaume Ólason, Einar, Rampal, Pierre Regan, Heather Lique, Camille Talandier, Claude Brodeau, Laurent Ricker, Robert |
author_sort |
Boutin, Guillaume |
title |
Arctic sea ice mass balance in a new coupled ice-ocean model using a brittle rheology framework |
title_short |
Arctic sea ice mass balance in a new coupled ice-ocean model using a brittle rheology framework |
title_full |
Arctic sea ice mass balance in a new coupled ice-ocean model using a brittle rheology framework |
title_fullStr |
Arctic sea ice mass balance in a new coupled ice-ocean model using a brittle rheology framework |
title_full_unstemmed |
Arctic sea ice mass balance in a new coupled ice-ocean model using a brittle rheology framework |
title_sort |
arctic sea ice mass balance in a new coupled ice-ocean model using a brittle rheology framework |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03796674 https://hal.science/hal-03796674/document https://hal.science/hal-03796674/file/tc-2022-142.pdf https://doi.org/10.5194/tc-2022-142 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Basin Arctic Fram Strait Sea ice |
genre_facet |
Arctic Basin Arctic Fram Strait Sea ice |
op_source |
https://hal.science/hal-03796674 2022 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-2022-142 hal-03796674 https://hal.science/hal-03796674 https://hal.science/hal-03796674/document https://hal.science/hal-03796674/file/tc-2022-142.pdf doi:10.5194/tc-2022-142 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/tc-2022-142 |
_version_ |
1766303369860743168 |