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September 5, 2025Open Access

Substantial inter-model variation in OAE efficiency between the CESM2/MARBL and ECCO-Darwin ocean biogeochemistry models

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Authors

MTMichael D. TykaMZMengyang ZhouEYElizabeth Yankovsky

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Overview

Observational analysis reveals differences in CO2 uptake in CESM2/MARBL and ECCO-Darwin models, indicating model reliability issues for negative emissions.

Key Points

  • Substantial differences in CO2 uptake were observed between CESM2/MARBL and ECCO-Darwin models, highlighting variability.
  • The largest discrepancies occurred within the first 7 years post-alkalinity injection, affecting coastal management.
  • Observations from twelve precise pulse injection simulations were analyzed to examine variations in parameters across models.
  • Findings emphasize the need for improved model reliability in predicting outcomes for negative emissions strategies.

Cite This Study

Tyka et al. (2025) studied this question.

synapsesocial.com/papers/68bb3a3d2b87ece8dc95519fhttps://doi.org/10.5194/egusphere-2025-3713
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