Articles | Volume 16, issue 17
https://doi.org/10.5194/amt-16-4053-2023
https://doi.org/10.5194/amt-16-4053-2023
Research article
 | 
08 Sep 2023
Research article |  | 08 Sep 2023

Open-path measurement of stable water isotopologues using mid-infrared dual-comb spectroscopy

Daniel I. Herman, Griffin Mead, Fabrizio R. Giorgetta, Esther Baumann, Nathan A. Malarich, Brian R. Washburn, Nathan R. Newbury, Ian Coddington, and Kevin C. Cossel

Data sets

Data for manuscript: Herman, et al "Open-path measurement of stable water isotopologues using mid-infrared dual-comb spectroscopy" Kevin Cossel https://doi.org/10.18434/mds2-2976

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Short summary
Measurements of the isotope ratio of water vapor provide information about the sources and history of water vapor at a given location, which can be used to understand the impacts of climate change on global water use. Here, we demonstrate a new method for measuring isotope ratios over long open-air paths, which can reduce sampling bias and provide more spatial averaging than standard point sensor methods. We show that this new technique has high sensitivity and accuracy.