Articles | Volume 22, issue 13
https://doi.org/10.5194/bg-22-3143-2025
https://doi.org/10.5194/bg-22-3143-2025
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

Data sets

Morphometries of Emiliania huxleyi in the Pacific sector of the XX Italian Expedition from New Zealand to Antarctic Mariem Saavedra-Pellitero et al. https://doi.pangaea.de/10.1594/PANGAEA.964672

Morphometries of Emiliania huxleyi in the Pacific sector of the POLARSTERN cruise PS97 (ANT-XXXI/3) Mariem Saavedra-Pellitero et al. https://doi.pangaea.de/10.1594/PANGAEA.964674

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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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