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...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
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 |
| Summary: | <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> |
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| ISSN: | 1812-0784 1812-0792 |