Interdecadal water mass changes in the Southern Ocean between 30°E and 160°E
Interdecadal water mass changes in the Indian - Western Pacific sectors of the Southern Ocean were investigated using the Japanese Antarctic Research Expeditions and historical hydrographic observations from the 1950s to 1990s. Freshening and cooling occurred on the neutral density surfaces of 27.0...
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American Geophysical Union
2005
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Online Access: | https://doi.org/10.1029/2004GL022220 http://ecite.utas.edu.au/34683 |
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ftunivtasecite:oai:ecite.utas.edu.au:34683 2023-05-15T14:03:55+02:00 Interdecadal water mass changes in the Southern Ocean between 30°E and 160°E Aoki, S Bindoff, NL Church, JA 2005 https://doi.org/10.1029/2004GL022220 http://ecite.utas.edu.au/34683 en eng American Geophysical Union http://dx.doi.org/10.1029/2004GL022220 Aoki, S and Bindoff, NL and Church, JA, Interdecadal water mass changes in the Southern Ocean between 30°E and 160°E, Geophysical Research Letters, 32, (7) pp. L07607. ISSN 0094-8276 (2005) [Refereed Article] http://ecite.utas.edu.au/34683 Earth Sciences Oceanography Physical Oceanography Refereed Article PeerReviewed 2005 ftunivtasecite https://doi.org/10.1029/2004GL022220 2019-12-13T21:13:22Z Interdecadal water mass changes in the Indian - Western Pacific sectors of the Southern Ocean were investigated using the Japanese Antarctic Research Expeditions and historical hydrographic observations from the 1950s to 1990s. Freshening and cooling occurred on the neutral density surfaces of 27.0 kgm3 equatorward of Sub-Antarctic Front. Results for the area south of the Polar Front show warm and saline anomalies and oxygen decreases on the surfaces around 27.9 kgm3, which correspond to the Upper Circumpolar Deep Water. These latter anomalies are most simply explained by the mixing of these shallow waters with warmer and fresher surface waters. Steric sea level has also increased with an average change of 1mmyr1 from the 1970s to 1990s. The changes are larger north of the Sub-Antarctic Front, implying a strengthening of the Antarctic Circumpolar Current. It appears that the observed changes are consistent with the results from coupled climate model results for a similar period. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean eCite UTAS (University of Tasmania) Antarctic Indian Pacific Southern Ocean The Antarctic Geophysical Research Letters 32 7 n/a n/a |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Physical Oceanography |
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Earth Sciences Oceanography Physical Oceanography Aoki, S Bindoff, NL Church, JA Interdecadal water mass changes in the Southern Ocean between 30°E and 160°E |
topic_facet |
Earth Sciences Oceanography Physical Oceanography |
description |
Interdecadal water mass changes in the Indian - Western Pacific sectors of the Southern Ocean were investigated using the Japanese Antarctic Research Expeditions and historical hydrographic observations from the 1950s to 1990s. Freshening and cooling occurred on the neutral density surfaces of 27.0 kgm3 equatorward of Sub-Antarctic Front. Results for the area south of the Polar Front show warm and saline anomalies and oxygen decreases on the surfaces around 27.9 kgm3, which correspond to the Upper Circumpolar Deep Water. These latter anomalies are most simply explained by the mixing of these shallow waters with warmer and fresher surface waters. Steric sea level has also increased with an average change of 1mmyr1 from the 1970s to 1990s. The changes are larger north of the Sub-Antarctic Front, implying a strengthening of the Antarctic Circumpolar Current. It appears that the observed changes are consistent with the results from coupled climate model results for a similar period. |
format |
Article in Journal/Newspaper |
author |
Aoki, S Bindoff, NL Church, JA |
author_facet |
Aoki, S Bindoff, NL Church, JA |
author_sort |
Aoki, S |
title |
Interdecadal water mass changes in the Southern Ocean between 30°E and 160°E |
title_short |
Interdecadal water mass changes in the Southern Ocean between 30°E and 160°E |
title_full |
Interdecadal water mass changes in the Southern Ocean between 30°E and 160°E |
title_fullStr |
Interdecadal water mass changes in the Southern Ocean between 30°E and 160°E |
title_full_unstemmed |
Interdecadal water mass changes in the Southern Ocean between 30°E and 160°E |
title_sort |
interdecadal water mass changes in the southern ocean between 30°e and 160°e |
publisher |
American Geophysical Union |
publishDate |
2005 |
url |
https://doi.org/10.1029/2004GL022220 http://ecite.utas.edu.au/34683 |
geographic |
Antarctic Indian Pacific Southern Ocean The Antarctic |
geographic_facet |
Antarctic Indian Pacific Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
http://dx.doi.org/10.1029/2004GL022220 Aoki, S and Bindoff, NL and Church, JA, Interdecadal water mass changes in the Southern Ocean between 30°E and 160°E, Geophysical Research Letters, 32, (7) pp. L07607. ISSN 0094-8276 (2005) [Refereed Article] http://ecite.utas.edu.au/34683 |
op_doi |
https://doi.org/10.1029/2004GL022220 |
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Geophysical Research Letters |
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32 |
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7 |
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1766274787199418368 |