Data treatment and corrections for estimating H2O and CO2 isotope fluxes from high-frequency observations

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Abstract CO 2 H 2 O. When applying this method at a field scale, an isotope flux (δ H 2 O and CO 2 δ δ H 2 O compared to the net ecosystem flux of H 2 O, while this was not true for CO 2 H 2 O isotopologues due to the isotopic memory effect. We discuss how such artefacts can be detected and how they impact flux partitioning. We argue that these effects are likely due to condensation of water on a cellulose filter in our inlet system. Furthermore, we show that these artefacts can be resolved using physically sound corrections for inlet delays and high-frequency loss. Only after such corrections and verifications are made can ecosystem-scale fluxes be partitioned using isotopic fluxes as constraints, which in turn allows for conceptual land–atmosphere exchange models to be validated.

Location: Deutsche Nationalbibliothek Frankfurt am Main

Extent: Online-Ressource

Language: Englisch

Bibliographic citation: Data treatment and corrections for estimating H₂O and CO₂ isotope fluxes from high-frequency observations ; volume:16 ; number:23 ; year:2023 ; pages:5787-5810 ; extent:24
Atmospheric measurement techniques ; 16, Heft 23 (2023), 5787-5810 (gesamt 24)

Creator: Moonen, Robbert P. J.
Adnew, Getachew A.
Hartogensis, Oscar K.
Vilà-Guerau de Arellano, Jordi
Bonell Fontas, David J.
Röckmann, Thomas

DOI: 10.5194/amt-16-5787-2023

URN: urn:nbn:de:101:1-2023120703330152210015

Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.

Last update: 15.08.2025, 7:19 AM CEST

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Moonen, Robbert P. J.
Adnew, Getachew A.
Hartogensis, Oscar K.
Vilà-Guerau de Arellano, Jordi
Bonell Fontas, David J.
Röckmann, Thomas

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Data treatment and corrections for estimating H<sub>2</sub>O and CO<sub>2</sub> isotope fluxes from high-frequency observations

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