Biogeosciences
Biogeosciences
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Articles | Volume 22, issue 12
Articles | Volume 22, issue 12
https://doi.org/10.5194/bg-22-2767-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-2767-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 12
Research article
 | 
19 Jun 2025
Research article |  | 19 Jun 2025

Assessing the lifetime of anthropogenic CO2 and its sensitivity to different carbon cycle processes

Christine Kaufhold, Matteo Willeit, Bo Liu, and Andrey Ganopolski

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Short summary
This study simulates long-term future climate scenarios to assess the persistence of CO2 emissions in the atmosphere. Results show that the land stores 4 %–13 % of emissions after 100 kyr and that the removal timescale of CO2 for silicate weathering is shorter than previously expected. Our study highlights the importance of adding model complexity to the global carbon cycle in Earth system models for improved predictions of long-term atmospheric CO2 concentration.
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