Articles | Volume 19, issue 22
https://doi.org/10.5194/bg-19-5151-2022
https://doi.org/10.5194/bg-19-5151-2022
Research article
 | 
14 Nov 2022
Research article |  | 14 Nov 2022

Metabolic alkalinity release from large port facilities (Hamburg, Germany) and impact on coastal carbon storage

Mona Norbisrath, Johannes Pätsch, Kirstin Dähnke, Tina Sanders, Gesa Schulz, Justus E. E. van Beusekom, and Helmuth Thomas

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Revised manuscript accepted for BG
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Cited articles

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Short summary
Total alkalinity (TA) regulates the oceanic storage capacity of atmospheric CO2. TA is also metabolically generated in estuaries and influences coastal carbon storage through its inflows. We used water samples and identified the Hamburg port area as the one with highest TA generation. Of the overall riverine TA load, 14 % is generated within the estuary. Using a biogeochemical model, we estimated potential effects on the coastal carbon storage under possible anthropogenic and climate changes.
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