Biogeosciences
Biogeosciences
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Articles | Volume 22, issue 23
Articles | Volume 22, issue 23
https://doi.org/10.5194/bg-22-7519-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-7519-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 23
Research article
 | 
02 Dec 2025
Research article |  | 02 Dec 2025

Mesoscale eddies heterogeneously modulate CO2 fluxes in eddy-rich regions of the Southern Ocean

Mariana Salinas-Matus, Nuno Serra, Fatemeh Chegini, and Tatiana Ilyina

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Short summary
We use a 27-year eddy-resolving ocean-biogeochemical simulation to assess how mesoscale eddies modulate air–sea CO2 fluxes in the Southern Ocean. Eddies act as persistent carbon sinks, with anticyclones showing enhanced carbon uptake efficiency. Mesoscale features account for ~10 % of the total carbon uptake in the Southern Ocean and about 1 % of the anomalous carbon uptake.
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