Influence of ocean tides and ice shelves on ocean–ice interactions and dense shelf water formation in the D’Urville Sea, Antarctica
peer reviewed The D’Urville Sea, East Antarctica, is a major source of Dense Shelf Water (DSW), a precursor of Antarctic Bottom Water (AABW). AABW is a key water mass involved in the worldwide ocean circulation and long-term climate variability. The properties of AABW in global climate models suffer...
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Elsevier
2021
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Online Access: | https://orbi.uliege.be/handle/2268/258741 https://orbi.uliege.be/bitstream/2268/258741/1/1-s2.0-S1463500321000445-main.pdf https://doi.org/10.1016/j.ocemod.2021.101794 |
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ftorbi:oai:orbi.ulg.ac.be:2268/258741 2024-04-21T07:50:22+00:00 Influence of ocean tides and ice shelves on ocean–ice interactions and dense shelf water formation in the D’Urville Sea, Antarctica Huot, Pierre-Vincent Fichefet, T. Jourdain, N.C. Mathiot, P. Rousset, C. Kittel, Christoph Fettweis, Xavier 2021 https://orbi.uliege.be/handle/2268/258741 https://orbi.uliege.be/bitstream/2268/258741/1/1-s2.0-S1463500321000445-main.pdf https://doi.org/10.1016/j.ocemod.2021.101794 en eng Elsevier urn:issn:1463-5003 urn:issn:1463-5011 https://orbi.uliege.be/handle/2268/258741 info:hdl:2268/258741 https://orbi.uliege.be/bitstream/2268/258741/1/1-s2.0-S1463500321000445-main.pdf doi:10.1016/j.ocemod.2021.101794 scopus-id:2-s2.0-85103755393 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Ocean Modelling, 162 (2021) East Antarctica sea ice ocean ice shelves tides dense shelf water Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2021 ftorbi https://doi.org/10.1016/j.ocemod.2021.101794 2024-03-27T14:58:52Z peer reviewed The D’Urville Sea, East Antarctica, is a major source of Dense Shelf Water (DSW), a precursor of Antarctic Bottom Water (AABW). AABW is a key water mass involved in the worldwide ocean circulation and long-term climate variability. The properties of AABW in global climate models suffer from several biases, making climate projections uncertain. These models are potentially omitting or misrepresenting important mechanisms involved in the formation of DSW, such as tides and ocean–ice shelf interactions. Recent studies pointed out that tides and ice shelves significantly influence the coastal seas of Antarctica, where AABW originates from. Yet, the implications of these two processes in the formation and evolution of DSW are poorly understood, in particular in the D’Urville Sea. Using a series of NEMO-LIM numerical simulations, we assess the sensitivity of dense water formation in the D’Urville Sea to the representation of tides and ocean–ice shelf interactions during the years 2010–2015. We show that the ice shelves off Adélie Land are highly sensitive to tidal forcing, with a significant basal melt increase in the presence of tides. Ice shelf basal melt freshens and cools the ocean over significant portions of the coastal seas at the depth of the ice shelf draft. An opposite warming and increase in salinity are found in the upper layers. The influence of ice shelf basal melt on the ocean is largely increased in the presence of tides. However, the production of sea ice is found to be mostly unaffected by these two processes. Water mass transport out of polynyas and ice shelf cavities are then investigated, together with their sensitivity to tides and ocean–ice shelf interactions. Ice shelf basal melt impacts the volume of dense waters in two ways: (1) Dense Shelf Water and Modified Shelf Water are consumed to form water masses of intermediate density inside the ice shelf cavities, and (2) the freshening of the ocean subsurface makes its transformation into dense water by sea ice formation more ... Article in Journal/Newspaper Antarc* Antarctic Antarctica D’Urville Sea East Antarctica Ice Shelf Ice Shelves Sea ice University of Liège: ORBi (Open Repository and Bibliography) Ocean Modelling 162 101794 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
East Antarctica sea ice ocean ice shelves tides dense shelf water Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
East Antarctica sea ice ocean ice shelves tides dense shelf water Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Huot, Pierre-Vincent Fichefet, T. Jourdain, N.C. Mathiot, P. Rousset, C. Kittel, Christoph Fettweis, Xavier Influence of ocean tides and ice shelves on ocean–ice interactions and dense shelf water formation in the D’Urville Sea, Antarctica |
topic_facet |
East Antarctica sea ice ocean ice shelves tides dense shelf water Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed The D’Urville Sea, East Antarctica, is a major source of Dense Shelf Water (DSW), a precursor of Antarctic Bottom Water (AABW). AABW is a key water mass involved in the worldwide ocean circulation and long-term climate variability. The properties of AABW in global climate models suffer from several biases, making climate projections uncertain. These models are potentially omitting or misrepresenting important mechanisms involved in the formation of DSW, such as tides and ocean–ice shelf interactions. Recent studies pointed out that tides and ice shelves significantly influence the coastal seas of Antarctica, where AABW originates from. Yet, the implications of these two processes in the formation and evolution of DSW are poorly understood, in particular in the D’Urville Sea. Using a series of NEMO-LIM numerical simulations, we assess the sensitivity of dense water formation in the D’Urville Sea to the representation of tides and ocean–ice shelf interactions during the years 2010–2015. We show that the ice shelves off Adélie Land are highly sensitive to tidal forcing, with a significant basal melt increase in the presence of tides. Ice shelf basal melt freshens and cools the ocean over significant portions of the coastal seas at the depth of the ice shelf draft. An opposite warming and increase in salinity are found in the upper layers. The influence of ice shelf basal melt on the ocean is largely increased in the presence of tides. However, the production of sea ice is found to be mostly unaffected by these two processes. Water mass transport out of polynyas and ice shelf cavities are then investigated, together with their sensitivity to tides and ocean–ice shelf interactions. Ice shelf basal melt impacts the volume of dense waters in two ways: (1) Dense Shelf Water and Modified Shelf Water are consumed to form water masses of intermediate density inside the ice shelf cavities, and (2) the freshening of the ocean subsurface makes its transformation into dense water by sea ice formation more ... |
format |
Article in Journal/Newspaper |
author |
Huot, Pierre-Vincent Fichefet, T. Jourdain, N.C. Mathiot, P. Rousset, C. Kittel, Christoph Fettweis, Xavier |
author_facet |
Huot, Pierre-Vincent Fichefet, T. Jourdain, N.C. Mathiot, P. Rousset, C. Kittel, Christoph Fettweis, Xavier |
author_sort |
Huot, Pierre-Vincent |
title |
Influence of ocean tides and ice shelves on ocean–ice interactions and dense shelf water formation in the D’Urville Sea, Antarctica |
title_short |
Influence of ocean tides and ice shelves on ocean–ice interactions and dense shelf water formation in the D’Urville Sea, Antarctica |
title_full |
Influence of ocean tides and ice shelves on ocean–ice interactions and dense shelf water formation in the D’Urville Sea, Antarctica |
title_fullStr |
Influence of ocean tides and ice shelves on ocean–ice interactions and dense shelf water formation in the D’Urville Sea, Antarctica |
title_full_unstemmed |
Influence of ocean tides and ice shelves on ocean–ice interactions and dense shelf water formation in the D’Urville Sea, Antarctica |
title_sort |
influence of ocean tides and ice shelves on ocean–ice interactions and dense shelf water formation in the d’urville sea, antarctica |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://orbi.uliege.be/handle/2268/258741 https://orbi.uliege.be/bitstream/2268/258741/1/1-s2.0-S1463500321000445-main.pdf https://doi.org/10.1016/j.ocemod.2021.101794 |
genre |
Antarc* Antarctic Antarctica D’Urville Sea East Antarctica Ice Shelf Ice Shelves Sea ice |
genre_facet |
Antarc* Antarctic Antarctica D’Urville Sea East Antarctica Ice Shelf Ice Shelves Sea ice |
op_source |
Ocean Modelling, 162 (2021) |
op_relation |
urn:issn:1463-5003 urn:issn:1463-5011 https://orbi.uliege.be/handle/2268/258741 info:hdl:2268/258741 https://orbi.uliege.be/bitstream/2268/258741/1/1-s2.0-S1463500321000445-main.pdf doi:10.1016/j.ocemod.2021.101794 scopus-id:2-s2.0-85103755393 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.ocemod.2021.101794 |
container_title |
Ocean Modelling |
container_volume |
162 |
container_start_page |
101794 |
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1796934126773731328 |