Articles | Volume 16, issue 23
https://doi.org/10.5194/amt-16-5787-2023
https://doi.org/10.5194/amt-16-5787-2023
Research article
 | 
04 Dec 2023
Research article |  | 04 Dec 2023

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

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

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This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
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Cited articles

Adnew, G. A., Pons, T. L., Koren, G., Peters, W., and Röckmann, T.: Leaf-scale quantification of the effect of photosynthetic gas exchange on Δ17O of atmospheric CO2, Biogeosciences, 17, 3903–3922, https://doi.org/10.5194/bg-17-3903-2020, 2020. a, b
Adnew, G. A., Pons, T. L., Koren, G., Peters, W., and Röckmann, T.: Exploring the potential of Δ17O in CO2 for determining mesophyll conductance, Plant Physiol., 192, 1234–1253, https://doi.org/10.1093/plphys/kiad173, 2023. a
Boone, A., Bellvert, J., Best, M., Brooke, J., Canut-Rocafort, G., Cuxart, J., Hartogensis, O., Le Moigne, P., Miró, R., and Polcher, J.: Updates on the International Land Surface Interactions with the Atmosphere over the Iberian Semi-Arid Environment (LIAISE) Field Campaign, Tech. rep., https://cw3e.ucsd.edu (last access: 24 November 2023), 2021. a, b
Clog, M., Stolper, D., and Eiler, J. M.: Kinetics of CO2(g)-H2O(1) isotopic exchange, including mass 47 isotopologues, Chem. Geol., 395, 1–10, https://doi.org/10.1016/j.chemgeo.2014.11.023, 2015. a
Craig, H.: Isotopic standards for carbon and oxygen and correction factors for mass-spectrometric analysis of carbon dioxide, Geochim. Cosmochim. Ac., 12, 133–149, https://doi.org/10.1016/0016-7037(57)90024-8, 1957. a
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Isotope fluxes allow for net ecosystem gas exchange fluxes to be partitioned into sub-components like plant assimilation, respiration and transpiration, which can help us better understand the environmental drivers of each partial flux. We share the results of a field campaign isotope fluxes were derived using a combination of laser spectroscopy and eddy covariance. We found lag times and high frequency signal loss in the isotope fluxes we derived and present methods to correct for both.
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