Ocean 2D eddy energy fluxes from small mesoscale processes with SWOT

Abstract > ∘. In this region, the smaller scales (< 150  km) have a strong signature on the horizontal geostrophic strain rate and for all eddy diagnostics in the Western Boundary Current and along the meandering Agulhas Extension. We investigate the horizontal cascade of energy using a coarse-graining technique, and we observe that the wavelength range where the inverse cascade occurs is biased towards larger mesoscale wavelengths with today’s altimetric sampling. We also calculate the projected sampling of the eddy diagnostics under the SWOT swaths built with the NASA–CNES simulator to include the satellite position and realistic noise. For the swaths, a neural network noise mitigation method is implemented to reduce the residual SWOT random error before calculating eddy diagnostics. In terms of SSH, observable wavelengths of 15 to 20 km are retrieved after neural network noise mitigation, as opposed to wavelengths larger than 40 km before the noise reduction.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Ocean 2D eddy energy fluxes from small mesoscale processes with SWOT ; volume:19 ; number:5 ; year:2023 ; pages:1413-1435 ; extent:23 ; Ocean science ; 19, Heft 5 (2023), 1413-1435 (gesamt 23)

Contributors, Places and Time

• Creator: Carli, Elisa ; Morrow, Rosemary ; Vergara, Oscar ; Chevrier, Robin ; Renault, Lionel

Further information

• DOI: 10.5194/os-19-1413-2023
• URN: urn:nbn:de:101:1-2023101204353297812743
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 14.08.2025, 10:56 AM CEST