Articles | Volume 21, issue 5
https://doi.org/10.5194/os-21-1943-2025
https://doi.org/10.5194/os-21-1943-2025
Research article
 | 
12 Sep 2025
Research article |  | 12 Sep 2025

Regional modeling of internal-tide dynamics around New Caledonia – Part 2: Tidal incoherence and implications for sea surface height observability

Arne Bendinger, Sophie Cravatte, Lionel Gourdeau, Clément Vic, and Florent Lyard

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Short summary
Temporal variability of the semidiurnal internal tide around New Caledonia is investigated using regional modeling. An important contribution to temporal variability not linked to the spring–neap tide cycle is due to the presence of mesoscale eddies both at the generation sites and in the propagation direction. The incoherent tide has a widespread signature in sea surface height (SSH), challenging the SSH observability of mesoscale to submesoscale dynamics.
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