The Southern Ocean: A ventilation contributor with multiple sources
The importance of deep and bottom water formed in the Southern Ocean to the ventilation of theworld ocean abyss has been accepted by the oceanographic community. Uncertainties, however,exist about rate and exact location of dense water mass sinking around Antarctica. Based on watermass analysis, the...
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ftawi:oai:epic.awi.de:3512 2024-09-15T17:47:07+00:00 The Southern Ocean: A ventilation contributor with multiple sources Hellmer, Hartmut Beckmann, A. 2001 application/pdf https://epic.awi.de/id/eprint/3512/ https://epic.awi.de/id/eprint/3512/1/Hel8888a.pdf https://hdl.handle.net/10013/epic.14095 https://hdl.handle.net/10013/epic.14095.d001 unknown https://epic.awi.de/id/eprint/3512/1/Hel8888a.pdf https://hdl.handle.net/10013/epic.14095.d001 Hellmer, H. orcid:0000-0002-9357-9853 and Beckmann, A. (2001) The Southern Ocean: A ventilation contributor with multiple sources , Geophysical Research Letters, 28 (15), pp. 2927-2930 . hdl:10013/epic.14095 EPIC3Geophysical Research Letters, 28(15), pp. 2927-2930, ISSN: 0094-8276 Article isiRev 2001 ftawi 2024-06-24T03:54:11Z The importance of deep and bottom water formed in the Southern Ocean to the ventilation of theworld ocean abyss has been accepted by the oceanographic community. Uncertainties, however,exist about rate and exact location of dense water mass sinking around Antarctica. Based on watermass analysis, the Weddell Sea in the Atlantic sector has long been identified as being the majorsource for bottom water. The contribution of the Ross Sea in the western Pacific sector, althoughwith similar if not more favorable ingredients for dense bottom water formation, seemed to be minor.Observations and recent tracer analysis indicate that the Indian-Pacific sector might host sourceswhich together can compete with their Atlantic counterpart. Our numerical model results support asplitting of the Atlantic and Indian-Pacific contributions into roughly equal parts but for bottomwaters of different density. The observationally derived formation rate for dense Antarctic BottomWater on the order of 10 Sv (1 Sv = 10^6 m^3/s) is confirmed but doubles if the lighter componentof the Indian-Pacific sector is included. This places southern and northern hemisphere sources asequal contributors to the ventilation of the world ocean. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea Southern Ocean Weddell Sea Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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The importance of deep and bottom water formed in the Southern Ocean to the ventilation of theworld ocean abyss has been accepted by the oceanographic community. Uncertainties, however,exist about rate and exact location of dense water mass sinking around Antarctica. Based on watermass analysis, the Weddell Sea in the Atlantic sector has long been identified as being the majorsource for bottom water. The contribution of the Ross Sea in the western Pacific sector, althoughwith similar if not more favorable ingredients for dense bottom water formation, seemed to be minor.Observations and recent tracer analysis indicate that the Indian-Pacific sector might host sourceswhich together can compete with their Atlantic counterpart. Our numerical model results support asplitting of the Atlantic and Indian-Pacific contributions into roughly equal parts but for bottomwaters of different density. The observationally derived formation rate for dense Antarctic BottomWater on the order of 10 Sv (1 Sv = 10^6 m^3/s) is confirmed but doubles if the lighter componentof the Indian-Pacific sector is included. This places southern and northern hemisphere sources asequal contributors to the ventilation of the world ocean. |
format |
Article in Journal/Newspaper |
author |
Hellmer, Hartmut Beckmann, A. |
spellingShingle |
Hellmer, Hartmut Beckmann, A. The Southern Ocean: A ventilation contributor with multiple sources |
author_facet |
Hellmer, Hartmut Beckmann, A. |
author_sort |
Hellmer, Hartmut |
title |
The Southern Ocean: A ventilation contributor with multiple sources |
title_short |
The Southern Ocean: A ventilation contributor with multiple sources |
title_full |
The Southern Ocean: A ventilation contributor with multiple sources |
title_fullStr |
The Southern Ocean: A ventilation contributor with multiple sources |
title_full_unstemmed |
The Southern Ocean: A ventilation contributor with multiple sources |
title_sort |
southern ocean: a ventilation contributor with multiple sources |
publishDate |
2001 |
url |
https://epic.awi.de/id/eprint/3512/ https://epic.awi.de/id/eprint/3512/1/Hel8888a.pdf https://hdl.handle.net/10013/epic.14095 https://hdl.handle.net/10013/epic.14095.d001 |
genre |
Antarc* Antarctic Antarctica Ross Sea Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea Southern Ocean Weddell Sea |
op_source |
EPIC3Geophysical Research Letters, 28(15), pp. 2927-2930, ISSN: 0094-8276 |
op_relation |
https://epic.awi.de/id/eprint/3512/1/Hel8888a.pdf https://hdl.handle.net/10013/epic.14095.d001 Hellmer, H. orcid:0000-0002-9357-9853 and Beckmann, A. (2001) The Southern Ocean: A ventilation contributor with multiple sources , Geophysical Research Letters, 28 (15), pp. 2927-2930 . hdl:10013/epic.14095 |
_version_ |
1810495764612251648 |