Articles | Volume 14, issue 2
Atmos. Meas. Tech., 14, 1439–1455, 2021
https://doi.org/10.5194/amt-14-1439-2021
Atmos. Meas. Tech., 14, 1439–1455, 2021
https://doi.org/10.5194/amt-14-1439-2021

Research article 24 Feb 2021

Research article | 24 Feb 2021

Characterizing water vapour concentration dependence of commercial cavity ring-down spectrometers for continuous on-site atmospheric water vapour isotope measurements in the tropics

Shujiro Komiya et al.

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Short summary
The Amazon basin influences the atmospheric and hydrological cycles on local to global scales. To better understand how, we plan to perform continuous on-site measurements of the stable isotope composition of atmospheric water vapour. For making accurate on-site observations possible, we have investigated the performance of two commercial analysers and determined the best calibration strategy. Well calibrated, both analysers will allow us to record natural signals in the Amazon rainforest.