Articles | Volume 14, issue 12
https://doi.org/10.5194/bg-14-3027-2017
https://doi.org/10.5194/bg-14-3027-2017
Research article
 | 
22 Jun 2017
Research article |  | 22 Jun 2017

Interactions between nocturnal turbulent flux, storage and advection at an “ideal” eucalypt woodland site

Ian D. McHugh, Jason Beringer, Shaun C. Cunningham, Patrick J. Baker, Timothy R. Cavagnaro, Ralph Mac Nally, and Ross M. Thompson

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Cited articles

Aubinet, M.: Eddy covariance CO2 flux measurements in nocturnal conditions: an analysis of the problem, Ecol. Appl., 18, 1368–1378, 2008.
Aubinet, M. and Feigenwinter, C.: Direct CO2 advection measurements and the night flux problem, Agr. Forest Meteorol., 150, 651–654, https://doi.org/10.1016/j.agrformet.2010.03.007, 2010.
Aubinet, M., Heinesch, B., and Longdoz, B.: Estimation of the carbon sequestration by a heterogeneous forest: Night flux corrections, heterogeneity of the site and inter-annual variability, Glob. Change Biol., 8, 1053–1071, 2002.
Aubinet, M., Heinesch, B., and Yernaux, M.: Horizontal and Vertical CO2 Advection In A Sloping Forest, Bound.-Lay. Meteorol., 108, 397–417, https://doi.org/10.1023/a:1024168428135, 2003.
Aubinet, M., Feigenwinter, C., Heinesch, B., Bernhofer, C., Canepa, E., Lindroth, A., Montagnani, L., Rebmann, C., Sedlak, P., and Van Gorsel, E.: Direct advection measurements do not help to solve the night-time CO2 closure problem: Evidence from three different forests, Agr. Forest Meteorol., 150, 655–664, https://doi.org/10.1016/j.agrformet.2010.01.016, 2010.
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Short summary
We analysed a 3-year record of CO2 exchange at a eucalypt woodland and found that substantial nocturnal advective CO2 losses occurred, thus requiring correction. We demonstrated that the most common of these correction methods incurred substantial bias in long-term estimates of carbon balance if storage of CO2 below the measurement height was excluded. This is important because the majority of sites both in Australia and internationally lack such measurements.
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