See the paper on Eddy Detection Algorithm with In-Situ Measurements to Study North Brazil Current Rings by PhD student Corentin Subirade

Subirade, C.; L’Hégaret, P.; Speich, S.; Laxenaire, R.; Karstensen, J.; Carton, X. Combining an Eddy Detection Algorithm with In-Situ Measurements to Study North Brazil Current Rings. Remote Sens. 2023, 15, 1897. https://doi.org/10.3390/rs15071897