Biogeosciences
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Articles | Volume 23, issue 5
Articles | Volume 23, issue 5
https://doi.org/10.5194/bg-23-1897-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-1897-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 5
Research article
 | 
11 Mar 2026
Research article |  | 11 Mar 2026

Marine particles and their remineralization buffer future ocean biogeochemistry response to climate warming

Joeran Maerz, Katharina D. Six, Soeren Ahmerkamp, and Tatiana Ilyina

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Short summary
CO2 taken up by marine algae can escape ocean surface waters through subsequent particle formation and sinking. Representing this biological carbon pump (BCP) in Earth system models remains challenging and poses uncertainties for future projections. We show that an advanced BCP representation regionally buffers ocean biogeochemistry compared to a classical approach while both respond globally similar to climate warming. Particle microstructure turns out as a key uncertainty for sinking fluxes.
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