A model-based study of ice and freshwater transport variability along both sides of Greenland
We investigate some aspects of the variability of the Arctic freshwater content during the 1965-2002 period using the DRAKKAR eddy admitting global ocean/sea-ice model (12 km resolution in the Arctic). A comparison with recent mooring sections shows that the model realistically represents the major...
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Online Access: | https://archimer.ifremer.fr/doc/2009/publication-6713.pdf https://doi.org/10.1007/s00382-008-0510-7 https://archimer.ifremer.fr/doc/00000/6713/ |
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ftarchimer:oai:archimer.ifremer.fr:6713 2023-05-15T14:29:19+02:00 A model-based study of ice and freshwater transport variability along both sides of Greenland Lique, Camille Treguier, Anne-marie Scheinert, Markus Penduff, Thierry 2009-10 application/pdf https://archimer.ifremer.fr/doc/2009/publication-6713.pdf https://doi.org/10.1007/s00382-008-0510-7 https://archimer.ifremer.fr/doc/00000/6713/ eng eng Springer https://archimer.ifremer.fr/doc/2009/publication-6713.pdf doi:10.1007/s00382-008-0510-7 https://archimer.ifremer.fr/doc/00000/6713/ 2009 Springer. Part of Springer Science+Business Medi info:eu-repo/semantics/openAccess restricted use Climate Dynamics (0930-7575) (Springer), 2009-10 , Vol. 33 , N. 5 , P. 685-705 Fram Strait Davis Strait Freshwater flux Freshwater budget Arctic Ocean text Publication info:eu-repo/semantics/article 2009 ftarchimer https://doi.org/10.1007/s00382-008-0510-7 2021-09-23T20:17:28Z We investigate some aspects of the variability of the Arctic freshwater content during the 1965-2002 period using the DRAKKAR eddy admitting global ocean/sea-ice model (12 km resolution in the Arctic). A comparison with recent mooring sections shows that the model realistically represents the major advective exchanges with the Arctic basin, through Bering, Fram and Davis Straits, and the Barents Sea. This allows the separate contributions of the inflows and outflows across each section to be quantified. In the model, the Arctic freshwater content variability is explained by the sea-ice flux at Fram and the combined variations of ocean freshwater inflow (at Bering) and outflow (at Fram and Davis). At all routes, except trough Fram Strait, the freshwater transport variability is mainly accounted for by the liquid component, with small contributions from the sea-ice flux. The ocean freshwater transport variability through both Davis and Fram is controlled by the variability of the export branch (Baffin Island Current and East Greenland Current, respectively), the variability of the inflow branches playing a minor role. We examine the respective role of velocity and salinity fluctuations in the variability of the ocean freshwater transport. Fram and Davis Straits offer a striking contrast in this regard. Freshwater transport variations across Davis Strait are completely determined by the variations of the total volume flux (0.91 correlation). On the other hand, the freshwater transport through Fram Strait depends both on variations of volume transport and salinity. As a result, there is no significant correlation between the variability of freshwater flux at Fram and Davis, although the volume transports on each side of Greenland are strongly anti-correlated (-0.84). Contrary to Davis Strait, the salinity of water carried by the East Greenland Current through Fram Strait varies strongly due to the ice-ocean flux north of Greenland. Article in Journal/Newspaper Arctic Basin Arctic Arctic Ocean Baffin Island Baffin Barents Sea Davis Strait East Greenland east greenland current Fram Strait Greenland Sea ice Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Arctic Arctic Ocean Baffin Island Barents Sea Greenland Climate Dynamics 33 5 685 705 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Fram Strait Davis Strait Freshwater flux Freshwater budget Arctic Ocean |
spellingShingle |
Fram Strait Davis Strait Freshwater flux Freshwater budget Arctic Ocean Lique, Camille Treguier, Anne-marie Scheinert, Markus Penduff, Thierry A model-based study of ice and freshwater transport variability along both sides of Greenland |
topic_facet |
Fram Strait Davis Strait Freshwater flux Freshwater budget Arctic Ocean |
description |
We investigate some aspects of the variability of the Arctic freshwater content during the 1965-2002 period using the DRAKKAR eddy admitting global ocean/sea-ice model (12 km resolution in the Arctic). A comparison with recent mooring sections shows that the model realistically represents the major advective exchanges with the Arctic basin, through Bering, Fram and Davis Straits, and the Barents Sea. This allows the separate contributions of the inflows and outflows across each section to be quantified. In the model, the Arctic freshwater content variability is explained by the sea-ice flux at Fram and the combined variations of ocean freshwater inflow (at Bering) and outflow (at Fram and Davis). At all routes, except trough Fram Strait, the freshwater transport variability is mainly accounted for by the liquid component, with small contributions from the sea-ice flux. The ocean freshwater transport variability through both Davis and Fram is controlled by the variability of the export branch (Baffin Island Current and East Greenland Current, respectively), the variability of the inflow branches playing a minor role. We examine the respective role of velocity and salinity fluctuations in the variability of the ocean freshwater transport. Fram and Davis Straits offer a striking contrast in this regard. Freshwater transport variations across Davis Strait are completely determined by the variations of the total volume flux (0.91 correlation). On the other hand, the freshwater transport through Fram Strait depends both on variations of volume transport and salinity. As a result, there is no significant correlation between the variability of freshwater flux at Fram and Davis, although the volume transports on each side of Greenland are strongly anti-correlated (-0.84). Contrary to Davis Strait, the salinity of water carried by the East Greenland Current through Fram Strait varies strongly due to the ice-ocean flux north of Greenland. |
format |
Article in Journal/Newspaper |
author |
Lique, Camille Treguier, Anne-marie Scheinert, Markus Penduff, Thierry |
author_facet |
Lique, Camille Treguier, Anne-marie Scheinert, Markus Penduff, Thierry |
author_sort |
Lique, Camille |
title |
A model-based study of ice and freshwater transport variability along both sides of Greenland |
title_short |
A model-based study of ice and freshwater transport variability along both sides of Greenland |
title_full |
A model-based study of ice and freshwater transport variability along both sides of Greenland |
title_fullStr |
A model-based study of ice and freshwater transport variability along both sides of Greenland |
title_full_unstemmed |
A model-based study of ice and freshwater transport variability along both sides of Greenland |
title_sort |
model-based study of ice and freshwater transport variability along both sides of greenland |
publisher |
Springer |
publishDate |
2009 |
url |
https://archimer.ifremer.fr/doc/2009/publication-6713.pdf https://doi.org/10.1007/s00382-008-0510-7 https://archimer.ifremer.fr/doc/00000/6713/ |
geographic |
Arctic Arctic Ocean Baffin Island Barents Sea Greenland |
geographic_facet |
Arctic Arctic Ocean Baffin Island Barents Sea Greenland |
genre |
Arctic Basin Arctic Arctic Ocean Baffin Island Baffin Barents Sea Davis Strait East Greenland east greenland current Fram Strait Greenland Sea ice |
genre_facet |
Arctic Basin Arctic Arctic Ocean Baffin Island Baffin Barents Sea Davis Strait East Greenland east greenland current Fram Strait Greenland Sea ice |
op_source |
Climate Dynamics (0930-7575) (Springer), 2009-10 , Vol. 33 , N. 5 , P. 685-705 |
op_relation |
https://archimer.ifremer.fr/doc/2009/publication-6713.pdf doi:10.1007/s00382-008-0510-7 https://archimer.ifremer.fr/doc/00000/6713/ |
op_rights |
2009 Springer. Part of Springer Science+Business Medi info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1007/s00382-008-0510-7 |
container_title |
Climate Dynamics |
container_volume |
33 |
container_issue |
5 |
container_start_page |
685 |
op_container_end_page |
705 |
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1766303367758348288 |