Articles | Volume 22, issue 20
https://doi.org/10.5194/bg-22-5975-2025
https://doi.org/10.5194/bg-22-5975-2025
Research article
 | 
23 Oct 2025
Research article |  | 23 Oct 2025

Improving marine sediment carbon stock estimates: the role of dry bulk density and predictor adjustments

Mark Chatting, Markus Diesing, William Ross Hunter, Anthony Grey, Brian P. Kelleher, and Mark Coughlan

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Cited articles

Allcock, L., Breen, P., Conway, A., Crowe, T., Dolton, H. R., Haberlin, D., Heney, K., Johnson, M., Keena, T., Maxwell, J., Nolan, C., Orrell, D. L., Power, M., and Tully, O.: Ecological Sensitivity Analysis of the Celtic Sea to inform future designation of Marine Protected Areas (MPAs), Department of Housing, Local Government and Heritage., https://assets.gov.ie/static/documents/24643300-ecological-sensitivity-analysis-of-the-celtic-sea-to-inform-future-designatio.pdf (last access: 11 April 2024), 2024. 
Arosio, R., Wheeler, A. J., Sacchetti, F., Guinan, J., Benetti, S., O'Keeffe, E., van Landeghem, K. J. J., Conti, L. A., Furey, T., and Lim, A.: The geomorphology of Ireland's continental shelf, J Maps, 19, https://doi.org/10.1080/17445647.2023.2283192, 2023. 
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Short summary
Marine sediments store carbon and are critical in the global carbon cycle, but data gaps reduce the accuracy of carbon stock estimates. This study improves estimates in the Irish Sea by refining key data inputs. Using machine learning and bias adjustments, the new model suggests previous estimates overestimated carbon stocks by 31.4 %. The findings highlight the need for more accurate sediment measurements to guide environmental policies and better protect carbon storage in marine ecosystems.
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