Biogeosciences
Biogeosciences
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Articles | Volume 22, issue 24
Articles | Volume 22, issue 24
https://doi.org/10.5194/bg-22-8093-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-8093-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 24
Research article
 | 
19 Dec 2025
Research article |  | 19 Dec 2025

Multiscale statistical analysis of thermal and non-thermal components of seawater pCO2 in the Western English Channel: scaling, time-reversibility, and dependence

Kévin Robache and François G. Schmitt

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Short summary
Partial pressure of CO2 (pCO2) measurements were collected on the Astan buoy over nearly 5 years. Using advanced statistical tools, this study revealed that pCO2 variations, along with other parameters, follow turbulent and intermittent dynamics. We highlights the irreversibility of the thermal and non-thermal components of pCO2 and explores their links to temperature, biological production, and atmospheric or terrigenous inputs, providing new insights into high-frequency pCO2 variability.
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