Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 19, issue 20
Articles | Volume 19, issue 20
https://doi.org/10.5194/gmd-19-10203-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/gmd-19-10203-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 20
Development and technical paper
 | 
27 Oct 2026
Development and technical paper |  | 27 Oct 2026

Including the triple isotopic composition of dissolved oxygen in the ocean into the iLOVECLIM model (version 1.1.7): development and evaluation

Emeline Clermont, Ji-Woong Yang, Thomas Extier, and Didier M. Roche

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Short summary
The triple isotopic composition of atmospheric oxygen (17Δ) is used to reconstruct past global biospheric productivity. We present the first implementation of the oceanic contribution (17Δocean) in the intermediate-complexity model iLOVECLIM. Photosynthesis, respiration, and air–sea gas exchange are represented under preindustrial conditions. Model results agree with observations, providing a future key tool to study marine biogeochemical processes and past ocean biospheric productivity.
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The iLOVECLIM earth system model
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