Climate of the Past
Climate of the Past
CP
Articles | Volume 21, issue 12
Articles | Volume 21, issue 12
https://doi.org/10.5194/cp-21-2601-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-21-2601-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 12
Research article
 | 
17 Dec 2025
Research article |  | 17 Dec 2025

Modelling the impact of palaeogeographical changes on weathering and CO2 during the Cretaceous–Eocene period

Nick R. Hayes, Daniel J. Lunt, Yves Goddéris, Richard D. Pancost, and Heather Buss

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Short summary
The breakdown of volcanic rocks by water helps balance the climate of the Earth by sequestering atmospheric CO2. The rate of CO2 sequestration is referred to as "weatherability". Our modelling study finds that continental position strongly impacts CO2 concentrations, that runoff strongly controls weatherability, that changes in weatherability may explain long-term trends in atmospheric CO2 concentrations, and that even relatively localised changes in weatherability may have global impacts.
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