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May 10, 2026BiogeosciencesOpen Access

Complexity in biogeochemical models: consequences for the biological carbon pump

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Authors

JRJonathan RogersonATAlessandro TagliabueANAgathe Nguyen

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Overview

Randomized trial evaluates biogeochemical model complexity on carbon export in marine ecosystems, suggesting future adaptations are needed.

Key Points

  • To evaluate the impact of model complexity on the biological carbon pump and related biogeochemical processes.
  • Evaluated five configurations of the Pelagic Interaction Scheme for Carbon and Ecosystem Studies (PISCES).
  • Assessed net primary productivity, carbon export, and export efficiency under the RCP8.5 scenario.
  • Compared outputs using identical physical variables but differing parameterisations.
  • Quota-based configurations yield 15–21 Pg C yr−1 more net primary productivity than Monod-quota models.
  • Complex models show lower export efficiencies (0.14–0.17) compared to simpler versions (∼0.25).
  • Latitudinal trends reveal conflicting NPP responses between configurations, impacting carbon export.

Cite This Study

Rogerson et al. (2026) studied this question.

synapsesocial.com/papers/6a0021b7c8f74e3340f9ca43https://doi.org/10.5194/bg-23-3179-2026
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