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| Titel |
Quality control of CarboEurope flux data – Part 2: Inter-comparison of eddy-covariance software |
| VerfasserIn |
M. Mauder, T. Foken, R. Clement, J. A. Elbers, W. Eugster, T. Grünwald, B. Heusinkveld, O. Kolle |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 5, no. 2 ; Nr. 5, no. 2 (2008-03-26), S.451-462 |
| Datensatznummer |
250002377
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| Publikation (Nr.) |
 copernicus.org/bg-5-451-2008.pdf |
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| Zusammenfassung |
| As part of the quality assurance and quality control activities within the
CarboEurope-IP network, a comparison of eddy-covariance software was
conducted. For four five-day datasets, CO2 flux estimates were
calculated by seven commonly used software packages to assess the
uncertainty of CO2 flux estimates due to differences in
post-processing. The datasets originated from different sites representing
different commonly applied instrumentation and different canopy structures
to cover a wide range of realistic conditions. Data preparation, coordinate
rotation and the implementation of the correction for high frequency
spectral losses were identified as crucial processing steps leading to
significant discrepancies in the CO2 flux results. The overall
comparison indicated a good although not yet perfect agreement among the
different software within 5–10% difference for 30-min CO2 flux
values. Conceptually different ideas about the selection and application of
processing steps were a main reason for the differences in the CO2 flux
estimates observed. A balance should be aspired between scientific freedom
on the one hand, in order to advance methodical issues, and standardisation
of procedures on the other hand, in order to obtain comparable fluxes for
multi-site synthesis studies. |
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