How does imposing an observationally-informed map of background vertical diffusivity impact the modelled Arctic Ocean state? ...
<!--!introduction!--> Mixing in the Arctic Ocean drives water mass transformations critical to the heat and freshwater budgets of the Arctic Ocean, impacting sea ice, stratification, circulation, and heat and freshwater release to the subpolar N. Atlantic. Observations indicate that mixing rat...
| Main Authors: | , , , , |
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| Format: | Conference Object |
| Language: | unknown |
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GFZ German Research Centre for Geosciences
2023
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| Online Access: | https://dx.doi.org/10.57757/iugg23-2985 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018913 |
| Summary: | <!--!introduction!--> Mixing in the Arctic Ocean drives water mass transformations critical to the heat and freshwater budgets of the Arctic Ocean, impacting sea ice, stratification, circulation, and heat and freshwater release to the subpolar N. Atlantic. Observations indicate that mixing rates in the Arctic Ocean are highly variable, however this variability is typically not well-represented in models. This study uses a regional Arctic Ocean model to addresses the question “How does imposing an observationally-informed map of background vertical diffusivity impact the modelled Arctic Ocean state?” It seeks to understand the impacts based on a set of model experiments that systematically vary the diffusivity uniformly in space. It is shown that prescribing the observationally-informed mixing map results in increased heat loss, a redistribution of freshwater storage, and increased heat and freshwater export to the N. Atlantic relative to a control case with an equal-on-average-but-spatially-uniform ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
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