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| Titel |
Towards a standardized processing of Net Ecosystem Exchange measured with eddy covariance technique: algorithms and uncertainty estimation |
| VerfasserIn |
D. Papale, M. Reichstein, M. Aubinet, E. Canfora, C. Bernhofer, W. Kutsch, B. Longdoz, S. Rambal, R. Valentini, T. Vesala, D. Yakir |
| 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 ; 3, no. 4 ; Nr. 3, no. 4 (2006-11-27), S.571-583 |
| Datensatznummer |
250001166
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| Publikation (Nr.) |
 copernicus.org/bg-3-571-2006.pdf |
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| Zusammenfassung |
| Eddy covariance technique to measure CO2, water and energy fluxes
between biosphere and atmosphere is widely spread and used in various
regional networks. Currently more than 250 eddy covariance sites are active
around the world measuring carbon exchange at high temporal resolution for
different biomes and climatic conditions. In this paper a new standardized
set of corrections is introduced and the uncertainties associated with these
corrections are assessed for eight different forest sites in Europe with a
total of 12 yearly datasets. The uncertainties introduced on the two
components GPP (Gross Primary Production) and TER (Terrestrial Ecosystem
Respiration) are also discussed and a quantitative analysis presented.
Through a factorial analysis we find that generally, uncertainties by
different corrections are additive without interactions and that the
heuristic u*-correction introduces the largest uncertainty. The
results show that a standardized data processing is needed for an effective
comparison across biomes and for underpinning inter-annual variability. The
methodology presented in this paper has also been integrated in the European
database of the eddy covariance measurements. |
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