Multidecadal preconditioning of the Maud Rise polynya region
In this paper, we consider Maud Rise polynya formation in a long (250-year) high-resolution (ocean 0.1 ∘ , atmosphere 0.5 ∘ horizontal model resolution) of the Community Earth System Model. We find a dominant multidecadal timescale in the occurrence of these Maud Rise polynyas. Analysis of the resul...
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Online Access: | https://doi.org/10.5194/os-16-1443-2020 https://os.copernicus.org/articles/16/1443/2020/ |
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ftcopernicus:oai:publications.copernicus.org:os84789 2023-05-15T18:24:40+02:00 Multidecadal preconditioning of the Maud Rise polynya region Westen, René M. Dijkstra, Henk A. 2020-11-23 application/pdf https://doi.org/10.5194/os-16-1443-2020 https://os.copernicus.org/articles/16/1443/2020/ eng eng doi:10.5194/os-16-1443-2020 https://os.copernicus.org/articles/16/1443/2020/ eISSN: 1812-0792 Text 2020 ftcopernicus https://doi.org/10.5194/os-16-1443-2020 2020-11-30T17:22:14Z In this paper, we consider Maud Rise polynya formation in a long (250-year) high-resolution (ocean 0.1 ∘ , atmosphere 0.5 ∘ horizontal model resolution) of the Community Earth System Model. We find a dominant multidecadal timescale in the occurrence of these Maud Rise polynyas. Analysis of the results leads us to the interpretation that a preferred timescale can be induced by the variability of the Weddell Gyre, previously identified as the Southern Ocean Mode. The large-scale pattern of heat content variability associated with the Southern Ocean Mode modifies the stratification in the Maud Rise region and leads to a preferred timescale in convection through preconditioning of the subsurface density and consequently to polynya formation. Text Southern Ocean Copernicus Publications: E-Journals Maud Rise ENVELOPE(3.000,3.000,-66.000,-66.000) Southern Ocean Weddell Ocean Science 16 6 1443 1457 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
In this paper, we consider Maud Rise polynya formation in a long (250-year) high-resolution (ocean 0.1 ∘ , atmosphere 0.5 ∘ horizontal model resolution) of the Community Earth System Model. We find a dominant multidecadal timescale in the occurrence of these Maud Rise polynyas. Analysis of the results leads us to the interpretation that a preferred timescale can be induced by the variability of the Weddell Gyre, previously identified as the Southern Ocean Mode. The large-scale pattern of heat content variability associated with the Southern Ocean Mode modifies the stratification in the Maud Rise region and leads to a preferred timescale in convection through preconditioning of the subsurface density and consequently to polynya formation. |
format |
Text |
author |
Westen, René M. Dijkstra, Henk A. |
spellingShingle |
Westen, René M. Dijkstra, Henk A. Multidecadal preconditioning of the Maud Rise polynya region |
author_facet |
Westen, René M. Dijkstra, Henk A. |
author_sort |
Westen, René M. |
title |
Multidecadal preconditioning of the Maud Rise polynya region |
title_short |
Multidecadal preconditioning of the Maud Rise polynya region |
title_full |
Multidecadal preconditioning of the Maud Rise polynya region |
title_fullStr |
Multidecadal preconditioning of the Maud Rise polynya region |
title_full_unstemmed |
Multidecadal preconditioning of the Maud Rise polynya region |
title_sort |
multidecadal preconditioning of the maud rise polynya region |
publishDate |
2020 |
url |
https://doi.org/10.5194/os-16-1443-2020 https://os.copernicus.org/articles/16/1443/2020/ |
long_lat |
ENVELOPE(3.000,3.000,-66.000,-66.000) |
geographic |
Maud Rise Southern Ocean Weddell |
geographic_facet |
Maud Rise Southern Ocean Weddell |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
eISSN: 1812-0792 |
op_relation |
doi:10.5194/os-16-1443-2020 https://os.copernicus.org/articles/16/1443/2020/ |
op_doi |
https://doi.org/10.5194/os-16-1443-2020 |
container_title |
Ocean Science |
container_volume |
16 |
container_issue |
6 |
container_start_page |
1443 |
op_container_end_page |
1457 |
_version_ |
1766205433549160448 |