Articles | Volume 20, issue 6
https://doi.org/10.5194/bg-20-1075-2023
https://doi.org/10.5194/bg-20-1075-2023
Research article
 | 
23 Mar 2023
Research article |  | 23 Mar 2023

Air–sea gas exchange in a seagrass ecosystem – results from a 3He ∕ SF6 tracer release experiment

Ryo Dobashi and David T. Ho

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Short summary
Seagrass meadows are productive ecosystems and bury much carbon. Understanding their role in the global carbon cycle requires knowledge of air–sea CO2 fluxes and hence the knowledge of gas transfer velocity (k). In this study, k was determined from the dual tracer technique in Florida Bay. The observed gas transfer velocity was lower than previous studies in the coastal and open oceans at the same wind speeds, most likely due to wave attenuation by seagrass and limited wind fetch in this area.
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