Eddy-mediated transport of warm Circumpolar Deep Water across the Antarctic Shelf Break
The Antarctic Slope Front (ASF) modulates ventilation of the abyssal ocean via the export of dense Antarctic Bottom Water (AABW) and constrains shoreward transport of warm Circumpolar Deep Water (CDW) toward marine-terminating glaciers. Along certain stretches of the continental shelf, particularly...
Published in: | Geophysical Research Letters |
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2015
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Online Access: | https://escholarship.org/uc/item/1m25w146 https://escholarship.org/content/qt1m25w146/qt1m25w146.pdf https://doi.org/10.1002/2014GL062281 |
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ftcdlib:oai:escholarship.org:ark:/13030/qt1m25w146 2024-09-15T17:47:35+00:00 Eddy-mediated transport of warm Circumpolar Deep Water across the Antarctic Shelf Break Stewart, AL Thompson, AF 432 - 440 2015-01-28 application/pdf https://escholarship.org/uc/item/1m25w146 https://escholarship.org/content/qt1m25w146/qt1m25w146.pdf https://doi.org/10.1002/2014GL062281 unknown eScholarship, University of California qt1m25w146 https://escholarship.org/uc/item/1m25w146 https://escholarship.org/content/qt1m25w146/qt1m25w146.pdf doi:10.1002/2014GL062281 public Geophysical Research Letters, vol 42, iss 2 Meteorology & Atmospheric Sciences article 2015 ftcdlib https://doi.org/10.1002/2014GL062281 2024-06-28T06:28:23Z The Antarctic Slope Front (ASF) modulates ventilation of the abyssal ocean via the export of dense Antarctic Bottom Water (AABW) and constrains shoreward transport of warm Circumpolar Deep Water (CDW) toward marine-terminating glaciers. Along certain stretches of the continental shelf, particularly where AABW is exported, density surfaces connect the shelf waters to the middepth Circumpolar Deep Water offshore, offering a pathway for mesoscale eddies to transport CDW directly onto the continental shelf. Using an eddy-resolving process model of the ASF, the authors show that mesoscale eddies can supply a dynamically significant transport of heat and mass across the continental shelf break. The shoreward transport of surface waters is purely wind driven, while the shoreward CDW transport is entirely due to mesoscale eddy transfer. The CDW flux is sensitive to all aspects of the model's surface forcing and geometry, suggesting that shoreward eddy heat transport may be localized to favorable sections of the continental slope. Article in Journal/Newspaper Antarc* Antarctic University of California: eScholarship Geophysical Research Letters 42 2 432 440 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Meteorology & Atmospheric Sciences |
spellingShingle |
Meteorology & Atmospheric Sciences Stewart, AL Thompson, AF Eddy-mediated transport of warm Circumpolar Deep Water across the Antarctic Shelf Break |
topic_facet |
Meteorology & Atmospheric Sciences |
description |
The Antarctic Slope Front (ASF) modulates ventilation of the abyssal ocean via the export of dense Antarctic Bottom Water (AABW) and constrains shoreward transport of warm Circumpolar Deep Water (CDW) toward marine-terminating glaciers. Along certain stretches of the continental shelf, particularly where AABW is exported, density surfaces connect the shelf waters to the middepth Circumpolar Deep Water offshore, offering a pathway for mesoscale eddies to transport CDW directly onto the continental shelf. Using an eddy-resolving process model of the ASF, the authors show that mesoscale eddies can supply a dynamically significant transport of heat and mass across the continental shelf break. The shoreward transport of surface waters is purely wind driven, while the shoreward CDW transport is entirely due to mesoscale eddy transfer. The CDW flux is sensitive to all aspects of the model's surface forcing and geometry, suggesting that shoreward eddy heat transport may be localized to favorable sections of the continental slope. |
format |
Article in Journal/Newspaper |
author |
Stewart, AL Thompson, AF |
author_facet |
Stewart, AL Thompson, AF |
author_sort |
Stewart, AL |
title |
Eddy-mediated transport of warm Circumpolar Deep Water across the Antarctic Shelf Break |
title_short |
Eddy-mediated transport of warm Circumpolar Deep Water across the Antarctic Shelf Break |
title_full |
Eddy-mediated transport of warm Circumpolar Deep Water across the Antarctic Shelf Break |
title_fullStr |
Eddy-mediated transport of warm Circumpolar Deep Water across the Antarctic Shelf Break |
title_full_unstemmed |
Eddy-mediated transport of warm Circumpolar Deep Water across the Antarctic Shelf Break |
title_sort |
eddy-mediated transport of warm circumpolar deep water across the antarctic shelf break |
publisher |
eScholarship, University of California |
publishDate |
2015 |
url |
https://escholarship.org/uc/item/1m25w146 https://escholarship.org/content/qt1m25w146/qt1m25w146.pdf https://doi.org/10.1002/2014GL062281 |
op_coverage |
432 - 440 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Geophysical Research Letters, vol 42, iss 2 |
op_relation |
qt1m25w146 https://escholarship.org/uc/item/1m25w146 https://escholarship.org/content/qt1m25w146/qt1m25w146.pdf doi:10.1002/2014GL062281 |
op_rights |
public |
op_doi |
https://doi.org/10.1002/2014GL062281 |
container_title |
Geophysical Research Letters |
container_volume |
42 |
container_issue |
2 |
container_start_page |
432 |
op_container_end_page |
440 |
_version_ |
1810497004552323072 |