Articles | Volume 12, issue 22
https://doi.org/10.5194/bg-12-6721-2015
https://doi.org/10.5194/bg-12-6721-2015
Technical note
 | 
26 Nov 2015
Technical note |  | 26 Nov 2015

Technical note: Time lag correction of aquatic eddy covariance data measured in the presence of waves

P. Berg, C. E. Reimers, J. H. Rosman, M. Huettel, M. L. Delgard, M. A. Reidenbach, and H. T. Özkan-Haller

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Cited articles

Attard, K. M., Glud, R. N., McGinnis, D. F., and Rysgaard, S.: Seasonal rates of benthic primary production in a Greenland fjord measured by aquatic eddy correlation, Limnol. Oceanogr., 59, 1555–1569, 2014.
Attard, K. M., Stahl, H., Kamenos, N. A., Turner, G., Burdett, H. L., and Glud, R. N.: Benthic oxygen exchange in a live coralline algal bed and an adjacent sandy habitat: an eddy covariance study, Mar. Ecol.-Prog. Ser., 535, 99–115, https://doi.org/10.3354/meps11413, 2015.
Baldocchi, D. D.: Assessing the eddy covariance technique for evaluating carbon dioxide exchange rates of ecosystems: past, present and future, Global Change Biol., 9, 479–492, 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
Extracting benthic oxygen fluxes from eddy covariance data measured in the presence of wave motions requires careful consideration of the temporal alignment of the vertical velocity and the oxygen concentration. We show that substantial errors in flux estimates can arise if these two variables are not aligned correctly in time. Due to the limited time response of all oxygen sensors used today, such a misalignment cannot be entirely avoided. We finally propose a new correction for this problem.
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