Articles | Volume 22, issue 22
https://doi.org/10.5194/bg-22-6877-2025
https://doi.org/10.5194/bg-22-6877-2025
Research article
 | 
18 Nov 2025
Research article |  | 18 Nov 2025

Dissolved organic carbon dynamics in a changing ocean: an ESM2M-COBALTv2 coupled model analysis

Lana Flanjak, Aaron Wienkers, and Charlotte Laufkötter

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Cited articles

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Bif, M. B. and Hansell, D. A.: Seasonality of Dissolved Organic Carbon in the Upper Northeast Pacific Ocean, Global Biogeochemical Cycles, 33, 526–539, https://doi.org/10.1029/2018GB006152, 2019. a
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Caesar, L., McCarthy, G. D., Thornalley, D. J., Cahill, N., and Rahmstorf, S.: Current Atlantic Meridional Overturning Circulation weakest in last millennium, Nature Geoscience, 14, 118–120, https://doi.org/10.1038/s41561-021-00699-z, 2021. a
Carlson, C. A. and Hansell, D. A.: Chapter 3 – DOM Sources, Sinks, Reactivity, and Budgets, in: Biogeochemistry of Marine Dissolved Organic Matter (Second Edition), second edition edn., edited by: Hansell, D. A. and Carlson, C. A., Academic Press, Boston, https://doi.org/10.1016/B978-0-12-405940-5.00003-0, pp. 65–126, 2015. a, b
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We used a global ocean model to explore how dissolved organic carbon is produced and transported in the ocean, both under present-day and future climate conditions. Our results suggest that climate change will reduce the export of this carbon to deeper layers due to weaker ocean circulation and mixing. This highlights the importance of physical transport in shaping ocean carbon dynamics and its sensitivity to a warming climate.
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