Reliable water vapour isotopic composition measurements at low humidity using frequency-stabilised cavity ring-down spectroscopy

Casado, Mathieu; Landais, Amaelle; Stoltmann, Tim; Chaillot, Justin; Daëron, Mathieu; Prié, Fréderic; Bordet, Baptiste; Kassi, Samir

doi:https://doi.org/10.5194/amt-17-4599-2024

Articles | Volume 17, issue 15

https://doi.org/10.5194/amt-17-4599-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-17-4599-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 15

Research article

|

08 Aug 2024

Research article |

| 08 Aug 2024

Reliable water vapour isotopic composition measurements at low humidity using frequency-stabilised cavity ring-down spectroscopy

Mathieu Casado, Amaelle Landais, Tim Stoltmann, Justin Chaillot, Mathieu Daëron, Fréderic Prié, Baptiste Bordet, and Samir Kassi

Model code and software

MathieuIso/Glaciotools: Glaciotools (Version v1) Mathieu Casado https://doi.org/10.5281/zenodo.13235227

Short summary

Measuring water isotopic composition in Antarctica is difficult because of the extremely cold temperature in winter. Here, we designed a new infrared spectrometer able to measure the vapour isotopic composition during more than 95 % of the year in the coldest locations of Antarctica, whereas current commercial instruments are only able to measure during the warm summer months in the interior.