How does Antarctic Bottom Water Cross the Southern Ocean?
Antarctic Bottom Water (AABW), which fills the global ocean abyss, is derived from dense water that forms in several distinct Antarctic shelf regions. Previous modeling studies have reached conflicting conclusions regarding export pathways of AABW across the Southern Ocean and the degree to which AA...
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ftcaltechauth:oai:authors.library.caltech.edu:114078 2023-05-15T13:04:16+02:00 How does Antarctic Bottom Water Cross the Southern Ocean? Solodoch, A. Stewart, A. L. Hogg, A. McC. Morrison, A. K. Kiss, A. E. Thompson, A. F. Purkey, S. G. Cimoli, L. 2022-04-16 application/pdf video/mpeg https://authors.library.caltech.edu/114078/ https://authors.library.caltech.edu/114078/1/Geophysical%20Research%20Letters%20-%202022%20-%20Solodoch%20-%20How%20does%20Antarctic%20Bottom%20Water%20Cross%20the%20Southern%20Ocean.pdf https://authors.library.caltech.edu/114078/2/2021gl097211-sup-0001-supporting%20information%20si-s01.pdf https://authors.library.caltech.edu/114078/3/2021gl097211-sup-0002-movie%20si-s01.mp4 https://authors.library.caltech.edu/114078/4/2021gl097211-sup-0003-movie%20si-s02.mp4 https://authors.library.caltech.edu/114078/5/2021gl097211-sup-0004-movie%20si-s03.mp4 https://authors.library.caltech.edu/114078/6/2021gl097211-sup-0005-movie%20si-s04.mp4 https://resolver.caltech.edu/CaltechAUTHORS:20220325-617190123 en eng American Geophysical Union https://authors.library.caltech.edu/114078/1/Geophysical%20Research%20Letters%20-%202022%20-%20Solodoch%20-%20How%20does%20Antarctic%20Bottom%20Water%20Cross%20the%20Southern%20Ocean.pdf https://authors.library.caltech.edu/114078/2/2021gl097211-sup-0001-supporting%20information%20si-s01.pdf https://authors.library.caltech.edu/114078/3/2021gl097211-sup-0002-movie%20si-s01.mp4 https://authors.library.caltech.edu/114078/4/2021gl097211-sup-0003-movie%20si-s02.mp4 https://authors.library.caltech.edu/114078/5/2021gl097211-sup-0004-movie%20si-s03.mp4 https://authors.library.caltech.edu/114078/6/2021gl097211-sup-0005-movie%20si-s04.mp4 Solodoch, A. and Stewart, A. L. and Hogg, A. McC. and Morrison, A. K. and Kiss, A. E. and Thompson, A. F. and Purkey, S. G. and Cimoli, L. (2022) How does Antarctic Bottom Water Cross the Southern Ocean? Geophysical Research Letters, 49 (7). Art. No. e2021GL097211. ISSN 0094-8276. doi:10.1029/2021gl097211. https://resolver.caltech.edu/CaltechAUTHORS:20220325-617190123 <https://resolver.caltech.edu/CaltechAUTHORS:20220325-617190123> other Article PeerReviewed 2022 ftcaltechauth 2022-05-05T17:50:10Z Antarctic Bottom Water (AABW), which fills the global ocean abyss, is derived from dense water that forms in several distinct Antarctic shelf regions. Previous modeling studies have reached conflicting conclusions regarding export pathways of AABW across the Southern Ocean and the degree to which AABW originating from distinct source regions are blended during their export. This study addresses these questions using passive tracer deployments in a 61-year global high-resolution (0.1°) ocean/sea-ice simulation. Two distinct export “conduits” are identified: Weddell Sea- and Prydz Bay-sourced AABW are blended together and exported mainly to the Atlantic and Indian Oceans, while Ross Sea- and Adelie Land-sourced AABW are exported mainly to the Pacific Ocean. Northward transport of each tracer occurs almost exclusively (>90%) within a single conduit. These findings imply that regional changes in AABW production may impact the three-dimensional structure of the global overturning circulation. Article in Journal/Newspaper Adelie Land Antarc* Antarctic Prydz Bay Ross Sea Sea ice Southern Ocean Weddell Sea Caltech Authors (California Institute of Technology) Antarctic Indian Pacific Prydz Bay Ross Sea Southern Ocean Weddell Weddell Sea |
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Open Polar |
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Caltech Authors (California Institute of Technology) |
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English |
description |
Antarctic Bottom Water (AABW), which fills the global ocean abyss, is derived from dense water that forms in several distinct Antarctic shelf regions. Previous modeling studies have reached conflicting conclusions regarding export pathways of AABW across the Southern Ocean and the degree to which AABW originating from distinct source regions are blended during their export. This study addresses these questions using passive tracer deployments in a 61-year global high-resolution (0.1°) ocean/sea-ice simulation. Two distinct export “conduits” are identified: Weddell Sea- and Prydz Bay-sourced AABW are blended together and exported mainly to the Atlantic and Indian Oceans, while Ross Sea- and Adelie Land-sourced AABW are exported mainly to the Pacific Ocean. Northward transport of each tracer occurs almost exclusively (>90%) within a single conduit. These findings imply that regional changes in AABW production may impact the three-dimensional structure of the global overturning circulation. |
format |
Article in Journal/Newspaper |
author |
Solodoch, A. Stewart, A. L. Hogg, A. McC. Morrison, A. K. Kiss, A. E. Thompson, A. F. Purkey, S. G. Cimoli, L. |
spellingShingle |
Solodoch, A. Stewart, A. L. Hogg, A. McC. Morrison, A. K. Kiss, A. E. Thompson, A. F. Purkey, S. G. Cimoli, L. How does Antarctic Bottom Water Cross the Southern Ocean? |
author_facet |
Solodoch, A. Stewart, A. L. Hogg, A. McC. Morrison, A. K. Kiss, A. E. Thompson, A. F. Purkey, S. G. Cimoli, L. |
author_sort |
Solodoch, A. |
title |
How does Antarctic Bottom Water Cross the Southern Ocean? |
title_short |
How does Antarctic Bottom Water Cross the Southern Ocean? |
title_full |
How does Antarctic Bottom Water Cross the Southern Ocean? |
title_fullStr |
How does Antarctic Bottom Water Cross the Southern Ocean? |
title_full_unstemmed |
How does Antarctic Bottom Water Cross the Southern Ocean? |
title_sort |
how does antarctic bottom water cross the southern ocean? |
publisher |
American Geophysical Union |
publishDate |
2022 |
url |
https://authors.library.caltech.edu/114078/ https://authors.library.caltech.edu/114078/1/Geophysical%20Research%20Letters%20-%202022%20-%20Solodoch%20-%20How%20does%20Antarctic%20Bottom%20Water%20Cross%20the%20Southern%20Ocean.pdf https://authors.library.caltech.edu/114078/2/2021gl097211-sup-0001-supporting%20information%20si-s01.pdf https://authors.library.caltech.edu/114078/3/2021gl097211-sup-0002-movie%20si-s01.mp4 https://authors.library.caltech.edu/114078/4/2021gl097211-sup-0003-movie%20si-s02.mp4 https://authors.library.caltech.edu/114078/5/2021gl097211-sup-0004-movie%20si-s03.mp4 https://authors.library.caltech.edu/114078/6/2021gl097211-sup-0005-movie%20si-s04.mp4 https://resolver.caltech.edu/CaltechAUTHORS:20220325-617190123 |
geographic |
Antarctic Indian Pacific Prydz Bay Ross Sea Southern Ocean Weddell Weddell Sea |
geographic_facet |
Antarctic Indian Pacific Prydz Bay Ross Sea Southern Ocean Weddell Weddell Sea |
genre |
Adelie Land Antarc* Antarctic Prydz Bay Ross Sea Sea ice Southern Ocean Weddell Sea |
genre_facet |
Adelie Land Antarc* Antarctic Prydz Bay Ross Sea Sea ice Southern Ocean Weddell Sea |
op_relation |
https://authors.library.caltech.edu/114078/1/Geophysical%20Research%20Letters%20-%202022%20-%20Solodoch%20-%20How%20does%20Antarctic%20Bottom%20Water%20Cross%20the%20Southern%20Ocean.pdf https://authors.library.caltech.edu/114078/2/2021gl097211-sup-0001-supporting%20information%20si-s01.pdf https://authors.library.caltech.edu/114078/3/2021gl097211-sup-0002-movie%20si-s01.mp4 https://authors.library.caltech.edu/114078/4/2021gl097211-sup-0003-movie%20si-s02.mp4 https://authors.library.caltech.edu/114078/5/2021gl097211-sup-0004-movie%20si-s03.mp4 https://authors.library.caltech.edu/114078/6/2021gl097211-sup-0005-movie%20si-s04.mp4 Solodoch, A. and Stewart, A. L. and Hogg, A. McC. and Morrison, A. K. and Kiss, A. E. and Thompson, A. F. and Purkey, S. G. and Cimoli, L. (2022) How does Antarctic Bottom Water Cross the Southern Ocean? Geophysical Research Letters, 49 (7). Art. No. e2021GL097211. ISSN 0094-8276. doi:10.1029/2021gl097211. https://resolver.caltech.edu/CaltechAUTHORS:20220325-617190123 <https://resolver.caltech.edu/CaltechAUTHORS:20220325-617190123> |
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other |
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