ROSSMIX 2.0: A Simplified Meso‐Scale Eddy Closure Applied to a Realistic Ocean Model
Abstract A new closure, ROSSMIX 2.0, for the effect of meso‐scale eddies in non‐eddy‐resolving ocean models is presented and evaluated. It combines aspects of several previous closures in a simplified approach: local linear stability analysis is used to predict the vertical and lateral shape of eddy...
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| Language: | English |
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American Geophysical Union (AGU)
2025-05-01
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| Series: | Journal of Advances in Modeling Earth Systems |
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| Online Access: | https://doi.org/10.1029/2024MS004769 |
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| author | Carsten Eden Jan Dettmer |
| author_facet | Carsten Eden Jan Dettmer |
| author_sort | Carsten Eden |
| collection | DOAJ |
| description | Abstract A new closure, ROSSMIX 2.0, for the effect of meso‐scale eddies in non‐eddy‐resolving ocean models is presented and evaluated. It combines aspects of several previous closures in a simplified approach: local linear stability analysis is used to predict the vertical and lateral shape of eddy correlations, while a wave energy equation co‐integrated in the ocean model predicts their amplitudes. The new closure is implemented and evaluated with good success in an idealized channel model of vertical and lateral shear instability, and in a realistic quasi‐global ocean model. The new closure enhances the meridional overturning circulation both globally and in the individual basins, with clearer connection of the large‐scale overturning cells in the Southern Ocean. This comes along with enhanced northward heat transport and horizontal transports in better agreement with observations, and a reduced bias in watermasses. |
| format | Article |
| id | doaj-art-9ba73bb0537b4bc3a86fdb41b0239116 |
| institution | Kabale University |
| issn | 1942-2466 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | American Geophysical Union (AGU) |
| record_format | Article |
| series | Journal of Advances in Modeling Earth Systems |
| spelling | doaj-art-9ba73bb0537b4bc3a86fdb41b02391162025-08-20T03:47:57ZengAmerican Geophysical Union (AGU)Journal of Advances in Modeling Earth Systems1942-24662025-05-01175n/an/a10.1029/2024MS004769ROSSMIX 2.0: A Simplified Meso‐Scale Eddy Closure Applied to a Realistic Ocean ModelCarsten Eden0Jan Dettmer1Institut für Meereskunde Universität Hamburg Hamburg GermanyInstitut für Meereskunde Universität Hamburg Hamburg GermanyAbstract A new closure, ROSSMIX 2.0, for the effect of meso‐scale eddies in non‐eddy‐resolving ocean models is presented and evaluated. It combines aspects of several previous closures in a simplified approach: local linear stability analysis is used to predict the vertical and lateral shape of eddy correlations, while a wave energy equation co‐integrated in the ocean model predicts their amplitudes. The new closure is implemented and evaluated with good success in an idealized channel model of vertical and lateral shear instability, and in a realistic quasi‐global ocean model. The new closure enhances the meridional overturning circulation both globally and in the individual basins, with clearer connection of the large‐scale overturning cells in the Southern Ocean. This comes along with enhanced northward heat transport and horizontal transports in better agreement with observations, and a reduced bias in watermasses.https://doi.org/10.1029/2024MS004769meso‐scale eddiesparameterizationocean models |
| spellingShingle | Carsten Eden Jan Dettmer ROSSMIX 2.0: A Simplified Meso‐Scale Eddy Closure Applied to a Realistic Ocean Model Journal of Advances in Modeling Earth Systems meso‐scale eddies parameterization ocean models |
| title | ROSSMIX 2.0: A Simplified Meso‐Scale Eddy Closure Applied to a Realistic Ocean Model |
| title_full | ROSSMIX 2.0: A Simplified Meso‐Scale Eddy Closure Applied to a Realistic Ocean Model |
| title_fullStr | ROSSMIX 2.0: A Simplified Meso‐Scale Eddy Closure Applied to a Realistic Ocean Model |
| title_full_unstemmed | ROSSMIX 2.0: A Simplified Meso‐Scale Eddy Closure Applied to a Realistic Ocean Model |
| title_short | ROSSMIX 2.0: A Simplified Meso‐Scale Eddy Closure Applied to a Realistic Ocean Model |
| title_sort | rossmix 2 0 a simplified meso scale eddy closure applied to a realistic ocean model |
| topic | meso‐scale eddies parameterization ocean models |
| url | https://doi.org/10.1029/2024MS004769 |
| work_keys_str_mv | AT carsteneden rossmix20asimplifiedmesoscaleeddyclosureappliedtoarealisticoceanmodel AT jandettmer rossmix20asimplifiedmesoscaleeddyclosureappliedtoarealisticoceanmodel |