The stability and calibration of water vapor isotope ratio measurements during long-term deployments

Bailey, A.; Noone, D.; Berkelhammer, M.; Steen-Larsen, H. C.; Sato, P.

doi:10.5194/amt-8-4521-2015

Articles | Volume 8, issue 10

https://doi.org/10.5194/amt-8-4521-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/amt-8-4521-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 8, issue 10

Research article

|

27 Oct 2015

Research article |

| 27 Oct 2015

The stability and calibration of water vapor isotope ratio measurements during long-term deployments

A. Bailey, D. Noone, M. Berkelhammer, H. C. Steen-Larsen, and P. Sato

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Latest update: 09 Mar 2026

Short summary

This study evaluates the long-term stability of concentration-dependent and drift-induced biases in three water vapor isotopic analyzers deployed at two remote field sites. Despite limited data at low humidity and measurement hysteresis, inaccuracies in the concentration-dependence characterization are small, and the bias shows no change with isotope ratio or directional drift. Changes in measurement repeatability that are not characterized by linear drift estimates are a larger source of error.