Biogeosciences
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Articles | Volume 23, issue 16
Articles | Volume 23, issue 16
https://doi.org/10.5194/bg-23-5921-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-5921-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 16
Research article
 | 
26 Aug 2026
Research article |  | 26 Aug 2026

Organic carbon pathways across the fluvial-marine transition zone of the Mackenzie River Delta – Beaufort Sea region and implications on ocean color remote sensing

Annabeth McCall, Martin Hieronymi, P. Paul Overduin, Lisa Bröder, Julie Lattaud, Rüdiger Röttgers, Irina Overeem, Anne Morgenstern, Guido Grosse, and Bennet Juhls

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Short summary
This study examines how carbon and sediments move from the Mackenzie River, through its delta, and into the Beaufort Sea. We use data from 2009–2024 and show that major changes in carbon concentrations unfold in low-salinity mixing zones. As the optical properties of the water also shift, satellite estimates of carbon will require more tailored methods. These findings will improve our understanding of Arctic carbon fluxes and influences on the greater Arctic Ocean carbon budget.
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