On the separation of a barotropic western boundary current from a cape
The problem of western boundary current separation is investigated using a barotropic vorticity model. Specifically, a boundary current flowing poleward along a boundary containing a cape is considered. The meridional gradient of the Coriolis parameter (the β effect), the strength of dissipation, an...
| Hauptverfasser: | , |
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| Format: | Journal article |
| Sprache: | English |
| Veröffentlicht: |
2005
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| _version_ | 1826296678635798528 |
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| author | Munday, D Marshall, D |
| author_facet | Munday, D Marshall, D |
| author_sort | Munday, D |
| collection | OXFORD |
| description | The problem of western boundary current separation is investigated using a barotropic vorticity model. Specifically, a boundary current flowing poleward along a boundary containing a cape is considered. The meridional gradient of the Coriolis parameter (the β effect), the strength of dissipation, and the geometry of the cape are varied. It is found that 1) all instances of flow separation arc coincident with the presence of a flow deceleration, 2) an increase in the strength of the β effect is able to suppress flow separation, and 3) increasing coastline curvature can overcome the suppressive β effect and induce separation. These results are supported by integrated vorticity budgets, which attribute the acceleration of the boundary current to the β effect and changes in flow curvature. The transition to unsteady final model states is found to have no effect upon the qualitative nature of these conclusions. © 2005 American Meteorological Society. |
| first_indexed | 2024-03-07T04:20:03Z |
| format | Journal article |
| id | oxford-uuid:cab7d248-6c6b-4e9c-a9d5-bc6b110dfd6c |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:20:03Z |
| publishDate | 2005 |
| record_format | dspace |
| spelling | oxford-uuid:cab7d248-6c6b-4e9c-a9d5-bc6b110dfd6c2022-03-27T07:09:21ZOn the separation of a barotropic western boundary current from a capeJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:cab7d248-6c6b-4e9c-a9d5-bc6b110dfd6cEnglishSymplectic Elements at Oxford2005Munday, DMarshall, DThe problem of western boundary current separation is investigated using a barotropic vorticity model. Specifically, a boundary current flowing poleward along a boundary containing a cape is considered. The meridional gradient of the Coriolis parameter (the β effect), the strength of dissipation, and the geometry of the cape are varied. It is found that 1) all instances of flow separation arc coincident with the presence of a flow deceleration, 2) an increase in the strength of the β effect is able to suppress flow separation, and 3) increasing coastline curvature can overcome the suppressive β effect and induce separation. These results are supported by integrated vorticity budgets, which attribute the acceleration of the boundary current to the β effect and changes in flow curvature. The transition to unsteady final model states is found to have no effect upon the qualitative nature of these conclusions. © 2005 American Meteorological Society. |
| spellingShingle | Munday, D Marshall, D On the separation of a barotropic western boundary current from a cape |
| title | On the separation of a barotropic western boundary current from a cape |
| title_full | On the separation of a barotropic western boundary current from a cape |
| title_fullStr | On the separation of a barotropic western boundary current from a cape |
| title_full_unstemmed | On the separation of a barotropic western boundary current from a cape |
| title_short | On the separation of a barotropic western boundary current from a cape |
| title_sort | on the separation of a barotropic western boundary current from a cape |
| work_keys_str_mv | AT mundayd ontheseparationofabarotropicwesternboundarycurrentfromacape AT marshalld ontheseparationofabarotropicwesternboundarycurrentfromacape |