How local diahaline mixing drives the overturning circulation in the Baltic Sea
| Autor: | Henell, E., Burchard, H., Gräwe, U., Klingbeil, K. |
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| Rok vydání: | 2023 |
| Zdroj: | XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) |
| DOI: | 10.57757/iugg23-0883 |
| Popis: | In this work we present new insights into the Baltic Sea overturning circulation by adopting an isohaline water mass transformation framework. Relations between local diahaline volume and diffusive salt flux, and local diahaline mixing, are verified in a realistic model simulation, and presented as Baltic Sea maps. In this way, hot spots for mixing are visualized, and the impact of boundary mixing is studied. Moreover, a unique quantification of physical (due to turbulence parameterization) and numerical mixing (due to discretization errors from the numerical advection schemes) offers to estimate the associated contributions to the simulated overturning circulation. Finally, we demonstrate that integration of the different new local diagnostics confirms existing bulk theories. The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) |
| Databáze: | OpenAIRE |
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