Ocean Science
Ocean Science
OS
Articles | Volume 21, issue 5
Articles | Volume 21, issue 5
https://doi.org/10.5194/os-21-1849-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-21-1849-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 5
Research article
 | 
01 Sep 2025
Research article |  | 01 Sep 2025

Mesoscale dynamics and transport in the North Brazil Current as revealed by the EUREC4A-OA experiment

Yan Barabinot, Sabrina Speich, Xavier Carton, Pierre L'Hégaret, Corentin Subirade, Rémi Laxenaire, and Johannes Karstensen

Supplement

https://doi.org/10.5194/os-21-1849-2025-supplement

Data sets

The new CNES-CLS18 global mean dynamic topography (https://resources.marine.copernicus.eu) S. Mulet et al. https://doi.org/10.5194/os-17-789-2021

TOEddies Global Atlas R. Laxenaire et al. https://doi.org/10.17882/102877

Argos floats from Coriolis Global Data Assembly Centre (GDAC) Argo https://doi.org/10.17882/42182

DUACS DT2018: 25 years of reprocessed sea level altimetry products (https://resources.marine.copernicus.eu) G. Taburet et al. https://doi.org/10.5194/os-15-1207-2019

Concatenated Temperature, Salinity, and Velocity measurements from EUREC4A_OA/ATOMIC P. L’Hégaret et al. https://doi.org/10.17882/92071

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Short summary
Mesoscale eddies are rotating oceanic currents key to ocean variability. Off Brazil’s northeast coast, the North Brazil Current generates on average 4.5 eddies per year, which drift towards the West Indies, transporting waters from the Southern Hemisphere. Using data collected at sea by the EUREC4A-OA cruise, this study reveals that deep eddies transport 5 times more water than surface ones, reshaping our understanding of the regional water transport.
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