Ocean Science
Ocean Science
OS
Articles | Volume 22, issue 4
Articles | Volume 22, issue 4
https://doi.org/10.5194/os-22-2425-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-22-2425-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 4
Research article
 | 
13 Aug 2026
Research article |  | 13 Aug 2026

Thermohaline gradients and frontal regimes in the northwestern Tropical Atlantic

Dante C. Napolitano, Jonathan Gula, Solange Coadou-Chaventon, Sabrina Speich, Cesar B. Rocha, James C. McWilliams, Dongxiao Zhang, and Xavier Carton

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Short summary
The Amazon River plume interaction with the North Brazil Current creates sharp temperature-salinity differences called fronts that are important for modulating air-sea interactions and biogeochemical cycles. This study uses data from robotic sailboats and a numerical model to provide a comprehensive picture of these fronts associated with the local dynamics. We characterize three distinct frontal regimes and the temperature-salinity relations linked to the Amazon discharge and current strength.
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