On the influence of adequate Weddell Sea characteristics in a large-scale global ocean circulation model
Global ocean circulation models usually lack an adequate consideration of high-latitude processes due to a limited model domain or insufficient resolution. Without the processes in key areas of the global thermohaline circulation, the characteristics and flow of deep and bottom waters cannot be mode...
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ftawi:oai:epic.awi.de:10644 2023-09-05T13:13:28+02:00 On the influence of adequate Weddell Sea characteristics in a large-scale global ocean circulation model Hellmer, Hartmut Schodlok, Michael Wenzel, Manfred Schröter, Jens 2005 application/pdf https://epic.awi.de/id/eprint/10644/ https://epic.awi.de/id/eprint/10644/1/Hel2004d.pdf https://doi.org/10.1007/s10236-005-0112-4 https://hdl.handle.net/10013/epic.21115 https://hdl.handle.net/10013/epic.21115.d001 unknown https://epic.awi.de/id/eprint/10644/1/Hel2004d.pdf https://hdl.handle.net/10013/epic.21115.d001 Hellmer, H. orcid:0000-0002-9357-9853 , Schodlok, M. , Wenzel, M. and Schröter, J. orcid:0000-0002-9240-5798 (2005) On the influence of adequate Weddell Sea characteristics in a large-scale global ocean circulation model , Ocean dynamics, 55 (2), pp. 88-99 . doi:10.1007/s10236-005-0112-4 <https://doi.org/10.1007/s10236-005-0112-4> , hdl:10013/epic.21115 EPIC3Ocean dynamics, 55(2), pp. 88-99, ISBN: 1616-7228 (Online) Article isiRev 2005 ftawi https://doi.org/10.1007/s10236-005-0112-4 2023-08-22T19:48:50Z Global ocean circulation models usually lack an adequate consideration of high-latitude processes due to a limited model domain or insufficient resolution. Without the processes in key areas of the global thermohaline circulation, the characteristics and flow of deep and bottom waters cannot be modeled realistically. In this study, a high-resolution (~20 km) ocean model focused on the Weddell Sea sector of the Southern Ocean is combined with a low-resolution (2°× 2°) global ocean model applying the state estimation technique. Temperature, salinity, and velocity data on two Weddell Sea sections from the regional model are used as constraints for the large-scale model in addition to satellite altimetry and sea-surface temperatures. The differences between the model with additional constraints and without document that the Weddell Sea circulation exerts significant influence on the course of the Antarctic Circumpolar Current with consequences for Southern Ocean water mass characteristics and the spreading of deep and bottom waters in the South Atlantic. Furthermore, a warming trend in the period 19932001 was found in the Weddell Sea and adjacent basins in agreement with float measurements in the upper Southern Ocean. Teleconnections to the North Atlantic are suggested but need further studies to demonstrate their statistical significance. Article in Journal/Newspaper Antarc* Antarctic North Atlantic Southern Ocean Weddell Sea Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Southern Ocean The Antarctic Weddell Weddell Sea Ocean Dynamics 55 2 88 99 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Global ocean circulation models usually lack an adequate consideration of high-latitude processes due to a limited model domain or insufficient resolution. Without the processes in key areas of the global thermohaline circulation, the characteristics and flow of deep and bottom waters cannot be modeled realistically. In this study, a high-resolution (~20 km) ocean model focused on the Weddell Sea sector of the Southern Ocean is combined with a low-resolution (2°× 2°) global ocean model applying the state estimation technique. Temperature, salinity, and velocity data on two Weddell Sea sections from the regional model are used as constraints for the large-scale model in addition to satellite altimetry and sea-surface temperatures. The differences between the model with additional constraints and without document that the Weddell Sea circulation exerts significant influence on the course of the Antarctic Circumpolar Current with consequences for Southern Ocean water mass characteristics and the spreading of deep and bottom waters in the South Atlantic. Furthermore, a warming trend in the period 19932001 was found in the Weddell Sea and adjacent basins in agreement with float measurements in the upper Southern Ocean. Teleconnections to the North Atlantic are suggested but need further studies to demonstrate their statistical significance. |
format |
Article in Journal/Newspaper |
author |
Hellmer, Hartmut Schodlok, Michael Wenzel, Manfred Schröter, Jens |
spellingShingle |
Hellmer, Hartmut Schodlok, Michael Wenzel, Manfred Schröter, Jens On the influence of adequate Weddell Sea characteristics in a large-scale global ocean circulation model |
author_facet |
Hellmer, Hartmut Schodlok, Michael Wenzel, Manfred Schröter, Jens |
author_sort |
Hellmer, Hartmut |
title |
On the influence of adequate Weddell Sea characteristics in a large-scale global ocean circulation model |
title_short |
On the influence of adequate Weddell Sea characteristics in a large-scale global ocean circulation model |
title_full |
On the influence of adequate Weddell Sea characteristics in a large-scale global ocean circulation model |
title_fullStr |
On the influence of adequate Weddell Sea characteristics in a large-scale global ocean circulation model |
title_full_unstemmed |
On the influence of adequate Weddell Sea characteristics in a large-scale global ocean circulation model |
title_sort |
on the influence of adequate weddell sea characteristics in a large-scale global ocean circulation model |
publishDate |
2005 |
url |
https://epic.awi.de/id/eprint/10644/ https://epic.awi.de/id/eprint/10644/1/Hel2004d.pdf https://doi.org/10.1007/s10236-005-0112-4 https://hdl.handle.net/10013/epic.21115 https://hdl.handle.net/10013/epic.21115.d001 |
geographic |
Antarctic Southern Ocean The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Southern Ocean The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic North Atlantic Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic North Atlantic Southern Ocean Weddell Sea |
op_source |
EPIC3Ocean dynamics, 55(2), pp. 88-99, ISBN: 1616-7228 (Online) |
op_relation |
https://epic.awi.de/id/eprint/10644/1/Hel2004d.pdf https://hdl.handle.net/10013/epic.21115.d001 Hellmer, H. orcid:0000-0002-9357-9853 , Schodlok, M. , Wenzel, M. and Schröter, J. orcid:0000-0002-9240-5798 (2005) On the influence of adequate Weddell Sea characteristics in a large-scale global ocean circulation model , Ocean dynamics, 55 (2), pp. 88-99 . doi:10.1007/s10236-005-0112-4 <https://doi.org/10.1007/s10236-005-0112-4> , hdl:10013/epic.21115 |
op_doi |
https://doi.org/10.1007/s10236-005-0112-4 |
container_title |
Ocean Dynamics |
container_volume |
55 |
container_issue |
2 |
container_start_page |
88 |
op_container_end_page |
99 |
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1776204728617664512 |