Sensitivity of simulated water mass transformation on the Antarctic shelf to tides, topography and model resolution ...
<!--!introduction!--> Water mass transformation (WMT) around the Antarctic margin controls Antarctica Bottom Water formation and the abyssal limb of the global meridional overturning circulation, besides mediating ocean-ice shelf exchange, ice sheet stability and its contribution to sea level...
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GFZ German Research Centre for Geosciences
2023
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ftdatacite:10.57757/iugg23-2687 2023-07-23T04:15:38+02:00 Sensitivity of simulated water mass transformation on the Antarctic shelf to tides, topography and model resolution ... Boeira Dias, Fabio Rintoul, Steve Richter, Ole Galton-Fenzi, Benjamin Zika, Jan Pellichero, Violaine Uotila, Petteri 2023 https://dx.doi.org/10.57757/iugg23-2687 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5019187 unknown GFZ German Research Centre for Geosciences Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Article ConferencePaper Oral 2023 ftdatacite https://doi.org/10.57757/iugg23-2687 2023-07-03T18:50:07Z <!--!introduction!--> Water mass transformation (WMT) around the Antarctic margin controls Antarctica Bottom Water formation and the abyssal limb of the global meridional overturning circulation, besides mediating ocean-ice shelf exchange, ice sheet stability and its contribution to sea level rise. However, the mechanisms controlling the rate of WMT in the Antarctic shelf are poorly understood due to the lack of observations and the inability of climate models to simulate those mechanisms, particularly beneath the floating ice shelves. We used a circum-Antarctic ocean-ice shelf model to assess the contribution of surface fluxes, mixing, and ocean-ice shelf interaction to the WMT on the continental shelf. The salt budget dominates the WMT rates, with the basal melt of ice shelves driving buoyancy gain at lighter density classes and salt input at coastal polynyas driving buoyancy loss at heavier densities . We found a considerable sensitivity of the WMT rates to model horizontal resolution, tides and ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... Conference Object Antarc* Antarctic Antarctic Ocean Antarctica Ice Sheet Ice Shelf Ice Shelves DataCite Metadata Store (German National Library of Science and Technology) Antarctic The Antarctic Antarctic Ocean |
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<!--!introduction!--> Water mass transformation (WMT) around the Antarctic margin controls Antarctica Bottom Water formation and the abyssal limb of the global meridional overturning circulation, besides mediating ocean-ice shelf exchange, ice sheet stability and its contribution to sea level rise. However, the mechanisms controlling the rate of WMT in the Antarctic shelf are poorly understood due to the lack of observations and the inability of climate models to simulate those mechanisms, particularly beneath the floating ice shelves. We used a circum-Antarctic ocean-ice shelf model to assess the contribution of surface fluxes, mixing, and ocean-ice shelf interaction to the WMT on the continental shelf. The salt budget dominates the WMT rates, with the basal melt of ice shelves driving buoyancy gain at lighter density classes and salt input at coastal polynyas driving buoyancy loss at heavier densities . We found a considerable sensitivity of the WMT rates to model horizontal resolution, tides and ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
format |
Conference Object |
author |
Boeira Dias, Fabio Rintoul, Steve Richter, Ole Galton-Fenzi, Benjamin Zika, Jan Pellichero, Violaine Uotila, Petteri |
spellingShingle |
Boeira Dias, Fabio Rintoul, Steve Richter, Ole Galton-Fenzi, Benjamin Zika, Jan Pellichero, Violaine Uotila, Petteri Sensitivity of simulated water mass transformation on the Antarctic shelf to tides, topography and model resolution ... |
author_facet |
Boeira Dias, Fabio Rintoul, Steve Richter, Ole Galton-Fenzi, Benjamin Zika, Jan Pellichero, Violaine Uotila, Petteri |
author_sort |
Boeira Dias, Fabio |
title |
Sensitivity of simulated water mass transformation on the Antarctic shelf to tides, topography and model resolution ... |
title_short |
Sensitivity of simulated water mass transformation on the Antarctic shelf to tides, topography and model resolution ... |
title_full |
Sensitivity of simulated water mass transformation on the Antarctic shelf to tides, topography and model resolution ... |
title_fullStr |
Sensitivity of simulated water mass transformation on the Antarctic shelf to tides, topography and model resolution ... |
title_full_unstemmed |
Sensitivity of simulated water mass transformation on the Antarctic shelf to tides, topography and model resolution ... |
title_sort |
sensitivity of simulated water mass transformation on the antarctic shelf to tides, topography and model resolution ... |
publisher |
GFZ German Research Centre for Geosciences |
publishDate |
2023 |
url |
https://dx.doi.org/10.57757/iugg23-2687 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5019187 |
geographic |
Antarctic The Antarctic Antarctic Ocean |
geographic_facet |
Antarctic The Antarctic Antarctic Ocean |
genre |
Antarc* Antarctic Antarctic Ocean Antarctica Ice Sheet Ice Shelf Ice Shelves |
genre_facet |
Antarc* Antarctic Antarctic Ocean Antarctica Ice Sheet Ice Shelf Ice Shelves |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.57757/iugg23-2687 |
_version_ |
1772176538085621760 |