Biogeosciences
Biogeosciences
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Articles | Volume 23, issue 12
Articles | Volume 23, issue 12
https://doi.org/10.5194/bg-23-4083-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-4083-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 12
Research article
 | 
22 Jun 2026
Research article |  | 22 Jun 2026

Dissecting mesopelagic particulate organic carbon budgets in the North Atlantic: A mechanistic diagnosis and evaluation of PISCESv2_RC

M. Andrea Orihuela-García, Yohan Ruprich-Robert, Vladimir Lapin, Saskia Loosveldt Tomas, Raffaele Bernardello, Margarida Samsó-Cabré, Pierre-Antoine Bretonnière, Miguel Castrillo, and Martí Galí

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Short summary
We use a biogeochemical model to examine how particulate organic carbon (POC) is produced, transformed and transported to the deep ocean. Vertical flux attenuation arises from several interacting processes: export pathways, particle lability, temperature-dependent degradation, and zooplankton transformations, leading to strongest attenuation in the most productive region. Together with extensive comparison to observations, such a budgeting approach can help constrain model projections.
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