Articles | Volume 18, issue 19
https://doi.org/10.5194/bg-18-5381-2021
https://doi.org/10.5194/bg-18-5381-2021
Technical note
 | 
04 Oct 2021
Technical note |  | 04 Oct 2021

Technical note: Novel triple O2 sensor aquatic eddy covariance instrument with improved time shift correction reveals central role of microphytobenthos for carbon cycling in coral reef sands

Alireza Merikhi, Peter Berg, and Markus Huettel

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Cited articles

Attard, K. M. and Glud, R. N.: Technical note: Estimating light-use efficiency of benthic habitats using underwater O2 eddy covariance, Biogeosciences, 17, 4343–4353, https://doi.org/10.5194/bg-17-4343-2020, 2020. 
Attard, K. M., Hancke, K., Sejr, M. K., and Glud, R. N.: Benthic primary production and mineralization in a High Arctic fjord: in situ assessments by aquatic eddy covariance, Mar. Ecol. Prog. Ser., 554, 35–50, https://doi.org/10.3354/meps11780, 2016. 
Baldocchi, D. D.: Assessing the eddy covariance technique for evaluating carbon dioxide exchange rates of ecosystems: past, present and future, Glob. Change Biol., 9, 479–492, https://doi.org/10.1046/j.1365-2486.2003.00629.x, 2003. 
Berg, P. and Huettel, M.: Monitoring the Seafloor Using the Noninvasive Eddy Correlation Technique: Integrated Benthic Exchange Dynamics, Oceanography, 21, 164–167, 2008. 
Berg, P., Roy, H., Janssen, F., Meyer, V., Jorgensen, B. B., Huettel, M., and de Beer, D.: Oxygen uptake by aquatic sediments measured with a novel non-invasive eddy-correlation technique, Mar. Ecol. Prog. Ser., 261, 75–83, 2003. 
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Short summary
The aquatic eddy covariance technique is a powerful method for measurements of solute fluxes across the sediment–water interface. Data measured by conventional eddy covariance instruments require a time shift correction that can result in substantial flux errors. We introduce a triple O2 sensor eddy covariance instrument that by design eliminates these errors. Deployments next to a conventional instrument in the Florida Keys demonstrate the improvements achieved through the new design.
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