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Biogeosciences An interactive open-access journal of the European Geosciences Union
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Volume 12, issue 4
Biogeosciences, 12, 1205–1221, 2015
https://doi.org/10.5194/bg-12-1205-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: 9th International Carbon Dioxide Conference (ICDC9) (ESD/ACP/AMT/BG...

Biogeosciences, 12, 1205–1221, 2015
https://doi.org/10.5194/bg-12-1205-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 25 Feb 2015

Research article | 25 Feb 2015

Uncertainty analysis of eddy covariance CO2 flux measurements for different EC tower distances using an extended two-tower approach

H. Post et al.
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Short summary
This study introduces an extension of the classical two-tower approach for uncertainty estimation of measured net CO2 fluxes (NEE). Because land surface properties cannot be assumed identical at two eddy covariance towers, a correction for systematic flux differences is proposed to be added to the classical weather filter. With this extension, the overestimation of NEE uncertainty due to systematic flux differences (which are assumed to increase with tower distance) can considerably be reduced.
This study introduces an extension of the classical two-tower approach for uncertainty...
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