Biogeosciences
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Articles | Volume 22, issue 16
Articles | Volume 22, issue 16
https://doi.org/10.5194/bg-22-4087-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-4087-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 16
Research article
 | 
25 Aug 2025
Research article |  | 25 Aug 2025

Sedimentary organic carbon dynamics in a glaciated Arctic fjord: tracing contributions of terrestrial and marine sources in the context of Atlantification over recent centuries

Dahae Kim, Jung-Hyun Kim, Youngkyu Ahn, Matthias Forwick, and Seung-Il Nam

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Short summary
The Arctic is warming rapidly, altering carbon storage in Svalbard’s Kongsfjorden. Our study analyzed sediment cores to track organic carbon shifts over time. We found that increasing Atlantic Water inflow enhanced marine carbon while reducing land-derived inputs. These findings suggest that Atlantification is reshaping carbon sequestration in Arctic fjords, with broader implications for the Arctic carbon cycle.
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