Multidecadal preconditioning of the Maud Rise polynya region
<p>In this paper, we consider Maud Rise polynya formation in a long (250-year) high-resolution (ocean 0.1<span class="inline-formula"><sup>∘</sup></span>, atmosphere 0.5<span class="inline-formula"><sup>∘</sup></span> horizont...
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Copernicus Publications
2020-11-01
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| Series: | Ocean Science |
| Online Access: | https://os.copernicus.org/articles/16/1443/2020/os-16-1443-2020.pdf |
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doaj-41549f34f1744a6a8d02b648adc348592020-11-25T04:11:59ZengCopernicus PublicationsOcean Science1812-07841812-07922020-11-01161443145710.5194/os-16-1443-2020Multidecadal preconditioning of the Maud Rise polynya regionR. M. van Westen0H. A. Dijkstra1H. A. Dijkstra2Institute for Marine and Atmospheric research Utrecht, Department of Physics, Utrecht University, Utrecht, the NetherlandsInstitute for Marine and Atmospheric research Utrecht, Department of Physics, Utrecht University, Utrecht, the NetherlandsCenter for Complex Systems Studies, Utrecht University, Utrecht, the Netherlands<p>In this paper, we consider Maud Rise polynya formation in a long (250-year) high-resolution (ocean 0.1<span class="inline-formula"><sup>∘</sup></span>, atmosphere 0.5<span class="inline-formula"><sup>∘</sup></span> 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.</p>https://os.copernicus.org/articles/16/1443/2020/os-16-1443-2020.pdf |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
R. M. van Westen H. A. Dijkstra H. A. Dijkstra |
| spellingShingle |
R. M. van Westen H. A. Dijkstra H. A. Dijkstra Multidecadal preconditioning of the Maud Rise polynya region Ocean Science |
| author_facet |
R. M. van Westen H. A. Dijkstra H. A. Dijkstra |
| author_sort |
R. M. van Westen |
| 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 |
| publisher |
Copernicus Publications |
| series |
Ocean Science |
| issn |
1812-0784 1812-0792 |
| publishDate |
2020-11-01 |
| description |
<p>In this paper, we consider Maud Rise polynya formation in a long (250-year) high-resolution (ocean 0.1<span class="inline-formula"><sup>∘</sup></span>, atmosphere 0.5<span class="inline-formula"><sup>∘</sup></span> 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.</p> |
| url |
https://os.copernicus.org/articles/16/1443/2020/os-16-1443-2020.pdf |
| work_keys_str_mv |
AT rmvanwesten multidecadalpreconditioningofthemaudrisepolynyaregion AT hadijkstra multidecadalpreconditioningofthemaudrisepolynyaregion AT hadijkstra multidecadalpreconditioningofthemaudrisepolynyaregion |
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1724416234323181568 |