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Calibration of sealed HCl cells used for TCCON instrumental line shape monitoring

MPG-Autoren
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Feist,  Dietrich G.
Atmospheric Remote Sensing Group, Dr. D. Feist, Department Biogeochemical Systems, Prof. M. Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society;

Externe Ressourcen

http://dx.doi.org/10.5194/amt-6-3527-2013
(Verlagsversion)

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BGC1883D.pdf
(Verlagsversion), 7MB

BGC1883.pdf
(Verlagsversion), 7MB

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Zitation

Hase, F., Drouin, B. J., Roehl, C. M., Toon, G. C., Wennberg, P. O., Wunch, D., et al. (2013). Calibration of sealed HCl cells used for TCCON instrumental line shape monitoring. Atmospheric Measurement Techniques, 6, 3527-3537. doi:10.5194/amt-6-3527-2013.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0014-4C6D-C
Zusammenfassung
The TCCON (Total Carbon Column Observing Network) FTIR network provides highly accurate observations of greenhouse gases column-averaged dry-air mole fractions. As an important component of TCCON quality assurance measures, sealed cells 5 filled with approx. 5mbar of HCl are used for instrumental line shape (ILS) monitoring at all TCCON sites. Here, we introduce a calibration procedure for the HCl cells which applies a refillable, pressure-monitored reference cell filled with C2H2. Using this method, we identify residual variations of HCl purity between the TCCON cells as a non-negligible disturbance.