Regional mapping of energetic short mesoscale ocean dynamics from altimetry: performances from real observations

Le Guillou, Florian; Gaultier, Lucile; Ballarotta, Maxime; Metref, Sammy; Ubelmann, Clément; Cosme, Emmanuel; Rio, Marie-Helène

doi:https://doi.org/10.5194/os-19-1517-2023

Articles | Volume 19, issue 5

https://doi.org/10.5194/os-19-1517-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Data assimilation techniques and applications in coastal and...

https://doi.org/10.5194/os-19-1517-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 5

Research article

|

26 Oct 2023

Research article |

| 26 Oct 2023

Regional mapping of energetic short mesoscale ocean dynamics from altimetry: performances from real observations

Florian Le Guillou, Lucile Gaultier, Maxime Ballarotta, Sammy Metref, Clément Ubelmann, Emmanuel Cosme, and Marie-Helène Rio

Data sets

Global Ocean Along Track L3 Sea Surface Heights Reprocessed 1993 Ongoing Tailored For Data Assimilation CLS https://doi.org/10.48670/moi-00146

Global Ocean Gridded L4 Sea Surface Heights And Derived Variables Reprocessed 1993 Ongoing CLS https://doi.org/10.48670/moi-00148

WOC Geostrophic Surface Current Estimated by the BFN-QG over Agulhas Region F. Le Guillou https://doi.org/10.12770/7fe77c80-798a-42d4-a69c-2b5f0ba81a43

WOC Fronts Derived from Remote Sensing SST Observations by SEVIRI over Agulhas Region L. Gaultier https://doi.org/10.12770/6c776c43-425b-4d29-9934-0822696f15d8

Model code and software

leguillf/MASSH: New release (v2.1) Florian Le Guillou, Matthias Renaud, Sammy Metref, and Juan Emmanuel Johnson https://doi.org/10.5281/zenodo.10017533

Short summary

Altimetry provides sea surface height (SSH) data along one-dimensional tracks. For many applications, the tracks are interpolated in space and time to provide gridded SSH maps. The operational SSH gridded products filter out the small-scale signals measured on the tracks. This paper evaluates the performances of a recently implemented dynamical method to retrieve the small-scale signals from real SSH data. We show a net improvement in the quality of SSH maps when compared to independent data.