Articles | Volume 8, issue 10
Atmos. Meas. Tech., 8, 4521–4538, 2015
https://doi.org/10.5194/amt-8-4521-2015
Atmos. Meas. Tech., 8, 4521–4538, 2015
https://doi.org/10.5194/amt-8-4521-2015

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 et al.

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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.