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| Titel |
Examples of the effects of different averaging methods on carbon dioxide fluxes calculated using the eddy correlation method |
| VerfasserIn |
A. D. Culf |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 4, no. 1 ; Nr. 4, no. 1, S.193-198 |
| Datensatznummer |
250001529
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| Publikation (Nr.) |
 copernicus.org/hess-4-193-2000.pdf |
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| Zusammenfassung |
| Three hours of high frequency vertical windspeed and carbon
dioxide concentration data recorded over tropical forest in Brazil are presented
and discussed in relation to various detrending techniques used in eddy
correlation analysis. Running means with time constants 100, 1000 and 1875s and
a 30 minute linear detrend, as commonly used to determine fluxes, have been
calculated for each case study and are presented. It is shown that, for
different trends in the background concentration of carbon dioxide, the
different methods can lead to the calculation of radically different fluxes over
an hourly period. The examples emphasise the need for caution when interpreting
eddy correlation derived fluxes especially for short term process studies.
Keywords: Eddy covariance; detrending; running mean; carbon
dioxide; tropical forest |
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