GEOCLIM7, an Earth system model for multi-million-year evolution of the geochemical cycles and climate

Maffre, Pierre; Goddéris, Yves; Le Hir, Guillaume; Nardin, Élise; Sarr, Anta-Clarisse; Donnadieu, Yannick

doi:https://doi.org/10.5194/gmd-18-6367-2025

Articles | Volume 18, issue 18

https://doi.org/10.5194/gmd-18-6367-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-18-6367-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 18

Model description paper

|

25 Sep 2025

Model description paper |

| 25 Sep 2025

GEOCLIM7, an Earth system model for multi-million-year evolution of the geochemical cycles and climate

Pierre Maffre, Yves Goddéris, Guillaume Le Hir, Élise Nardin, Anta-Clarisse Sarr, and Yannick Donnadieu

Data sets

Simulation outputs associated with Maffre et al. "GEOCLIM7, an Earth System Model for multi-million years evolution of the geochemical cycles and climate.'' (submitted to GMD) P. Maffre https://doi.org/10.5281/zenodo.14228131

Model code and software

piermafrost/GEOCLIM P. Maffre https://doi.org/10.5281/zenodo.5246621

piermafrost/GEOCLIM P. Maffre https://doi.org/10.5281/zenodo.15808864

piermafrost/GEOCLIM: GEOCLIM7.0.1_Mil-90Ma-1.0.1 P. Maffre https://doi.org/10.5281/zenodo.15808899

Short summary

A new version (v7) of the numerical model GEOCLIM is presented here. GEOCLIM models the evolution of ocean and atmosphere chemical composition on multi-million-year timescales, including carbon and oxygen cycles, CO_2, and climate. GEOCLIM is associated with a climate model, and a new procedure to link the climate model to GEOCLIM is presented here. GEOCLIM is applied here to investigate the evolution of ocean oxygenation following Earth's orbital parameter variations around 94 million years ago.