Biogeosciences
Biogeosciences
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Articles | Volume 22, issue 22
Articles | Volume 22, issue 22
https://doi.org/10.5194/bg-22-7031-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-7031-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 22
Research article
 | 
21 Nov 2025
Research article |  | 21 Nov 2025

Strong relation between atmospheric CO2 growth rate and terrestrial water storage in tropical forests on interannual timescales

Samantha Petch, Liang Feng, Paul I. Palmer, Robert P. King, Tristan Quaife, and Keith Haines

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Latest update: 04 Sep 2026
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Short summary
The growth rate of atmospheric CO2 varies year to year, mainly due to land ecosystems. Understanding factors controlling the land carbon uptake is crucial. Our study examines the link between terrestrial water storage and the CO2 growth rate from 2002–2023, revealing a strong negative correlation. We highlight the key role of tropical forests, especially in tropical America, and assess how regional contributions shift over time.
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