Articles | Volume 17, issue 11
https://doi.org/10.5194/amt-17-3495-2024
https://doi.org/10.5194/amt-17-3495-2024
Research article
 | 
05 Jun 2024
Research article |  | 05 Jun 2024

Pico-Light H2O: intercomparison of in situ water vapour measurements during the AsA 2022 campaign

Mélanie Ghysels, Georges Durry, Nadir Amarouche, Dale Hurst, Emrys Hall, Kensy Xiong, Jean-Charles Dupont, Jean-Christophe Samake, Fabien Frérot, Raghed Bejjani, and Emmanuel D. Riviere

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Cited articles

Banerjee, A., Chiodo, G., Previdi, M., Ponater, M., Conley, A. J., and Polvani, L. M.: Stratospheric water vapor: an important climate feedback, Clim. Dynam., 53, 1697–1710, https://doi.org/10.1007/s00382-019-04721-4, 2019. 
Behera, A. K., Rivière, E. D., Marécal, V., Rysman, J.-F., Chantal, C., Sèze, G., Amarouche, N., Ghysels, M., Khaykin, S. M., Pommereau, J.-P., Held, G., Burgalat, J., and Durry, G.: Modeling the TTL at Continental Scale for a Wet Season: An Evaluation of the BRAMS Mesoscale Model Using TRO-Pico Campaign, and Measurements From Airborne and Spaceborne Sensors, J. Geophys. Res.-Atmos., 123, 2491–2508, https://doi.org/10.1002/2017JD027969, 2018. 
Berthet, G., Renard, J.-B., Ghysels, M., Durry, G., Gaubicher, B., and Amarouche, N.: Balloon-borne observations of mid-latitude stratospheric water vapour: comparisons with HALOE and MLS satellite data, J. Atmos. Chem., 70, 197–219, https://doi.org/10.1007/s10874-013-9264-7, 2013. 
Buchholz, B., Afchine, A., Klein, A., Schiller, C., Krämer, M., and Ebert, V.: HAI, a new airborne, absolute, twin dual-channel, multi-phase TDLAS-hygrometer: background, design, setup, and first flight data, Atmos. Meas. Tech., 10, 35–57, https://doi.org/10.5194/amt-10-35-2017, 2017. 
Delahaye, T., Ghysels, M., Hodges, J. T., Sung, K., Armante, R., and Tran, H.: Measurement and Modeling of Air-Broadened Methane Absorption in the MERLIN Spectral Region at Low Temperatures, J. Geophys. Res.-Atmos., 124, 3556–3564, https://doi.org/10.1029/2018JD028917, 2019. 
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Short summary
A tunable diode laser hygrometer, “Pico-Light H2O”, is presented and its performances are evaluated during the AsA 2022 balloon-borne intercomparison campaign from Aire-sur-l'Adour (France) in September 2022. A total of 15 balloons were launched within the framework of the EU-funded HEMERA project. Pico-Light H2O has been compared in situ with the NOAA Frost Point Hygrometer in the upper troposphere and stratosphere, as well as with meteorological sondes (iMet-4 and M20) in the troposphere.