Biogeosciences
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Articles | Volume 22, issue 13
Articles | Volume 22, issue 13
https://doi.org/10.5194/bg-22-3143-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-3143-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 13
Research article
 | 
02 Jul 2025
Research article |  | 02 Jul 2025

Mismatch between coccolithophore-based estimates of particulate inorganic carbon (PIC) concentration and satellite-derived PIC concentration in the Pacific Southern Ocean

Mariem Saavedra-Pellitero, Karl-Heinz Baumann, Nuria Bachiller-Jareno, Harold Lovell, Nele Manon Vollmar, and Elisa Malinverno

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Short summary
This study combines micropaleontology and satellite remote sensing to investigate particulate inorganic carbon in the Pacific sector of the Southern Ocean. We compare estimates of calcium carbonate produced by coccolithophores (tiny marine algae) to satellite measurements of particulate inorganic carbon. Both datasets show good agreement north of the Polar Front, but large differences are observed to the south of it, likely because of highly reflective small opal particles in this zone. 
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