Arctic sea ice mass balance in a new coupled ice-ocean model using a brittle rheology framework
International audience 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-scal...
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Online Access: | https://hal.science/hal-03796674 https://hal.science/hal-03796674v2/document https://hal.science/hal-03796674v2/file/Boutin2023The_Cryosphere.pdf https://doi.org/10.5194/tc-17-617-2023 |
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ftunigrenoble:oai:HAL:hal-03796674v2 2024-04-14T08:05:44+00:00 Arctic sea ice mass balance in a new coupled ice-ocean model using a brittle rheology framework Boutin, Guillaume Ólason, Einar, Örn 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)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) 2023-02-08 https://hal.science/hal-03796674 https://hal.science/hal-03796674v2/document https://hal.science/hal-03796674v2/file/Boutin2023The_Cryosphere.pdf https://doi.org/10.5194/tc-17-617-2023 en eng HAL CCSD Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-17-617-2023 hal-03796674 https://hal.science/hal-03796674 https://hal.science/hal-03796674v2/document https://hal.science/hal-03796674v2/file/Boutin2023The_Cryosphere.pdf doi:10.5194/tc-17-617-2023 info:eu-repo/semantics/OpenAccess ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal.science/hal-03796674 The Cryosphere, 2023, ⟨10.5194/tc-17-617-2023⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2023 ftunigrenoble https://doi.org/10.5194/tc-17-617-2023 2024-03-21T16:09:22Z International audience 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. Article in Journal/Newspaper Arctic Basin Arctic Fram Strait Sea ice The Cryosphere Université Grenoble Alpes: HAL Arctic The Cryosphere 17 2 617 638 |
institution |
Open Polar |
collection |
Université Grenoble Alpes: HAL |
op_collection_id |
ftunigrenoble |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Boutin, Guillaume Ólason, Einar, Örn 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.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience 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)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Boutin, Guillaume Ólason, Einar, Örn Rampal, Pierre Regan, Heather Lique, Camille Talandier, Claude Brodeau, Laurent Ricker, Robert |
author_facet |
Boutin, Guillaume Ólason, Einar, Örn 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 |
2023 |
url |
https://hal.science/hal-03796674 https://hal.science/hal-03796674v2/document https://hal.science/hal-03796674v2/file/Boutin2023The_Cryosphere.pdf https://doi.org/10.5194/tc-17-617-2023 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Basin Arctic Fram Strait Sea ice The Cryosphere |
genre_facet |
Arctic Basin Arctic Fram Strait Sea ice The Cryosphere |
op_source |
ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal.science/hal-03796674 The Cryosphere, 2023, ⟨10.5194/tc-17-617-2023⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-17-617-2023 hal-03796674 https://hal.science/hal-03796674 https://hal.science/hal-03796674v2/document https://hal.science/hal-03796674v2/file/Boutin2023The_Cryosphere.pdf doi:10.5194/tc-17-617-2023 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/tc-17-617-2023 |
container_title |
The Cryosphere |
container_volume |
17 |
container_issue |
2 |
container_start_page |
617 |
op_container_end_page |
638 |
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1796302348359827456 |