The development and evaluation of airborne in situ N<sub>2</sub>O and CH<sub>4</sub> sampling using a quantum cascade laser absorption spectrometer (QCLAS)

Pitt, J. R.; Le Breton, M.; Allen, G.; Percival, C. J.; Gallagher, M. W.; Bauguitte, S. J.-B.; O'Shea, S. J.; Muller, J. B. A.; Zahniser, M. S.; Pyle, J.; Palmer, P. I.

doi:https://doi.org/10.5194/amt-9-63-2016

Articles | Volume 9, issue 1

https://doi.org/10.5194/amt-9-63-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Greenhouse gAs Uk and Global Emissions (GAUGE) project (ACP/AMT...

https://doi.org/10.5194/amt-9-63-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 9, issue 1

Research article

|

15 Jan 2016

Research article |

| 15 Jan 2016

The development and evaluation of airborne in situ N₂O and CH₄ sampling using a quantum cascade laser absorption spectrometer (QCLAS)

J. R. Pitt, M. Le Breton, G. Allen, C. J. Percival, M. W. Gallagher, S. J.-B. Bauguitte, S. J. O'Shea, J. B. A. Muller, M. S. Zahniser, J. Pyle, and P. I. Palmer

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Latest update: 07 Nov 2025

Short summary

We present details of an Aerodyne quantum cascade laser absorption spectrometer (QCLAS) used to make airborne measurements of N₂O and CH₄, including its configuration for use on board an aircraft. Two different methods to correct for the influence of water vapour on the measurements are evaluated. We diagnose a sensitivity of the instrument to changes in pressure, introduce a new calibration procedure to account for this effect, and assess its performance.

The development and evaluation of airborne in situ N2O and CH4 sampling using a quantum cascade laser absorption spectrometer (QCLAS)

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The development and evaluation of airborne in situ N₂O and CH₄ sampling using a quantum cascade laser absorption spectrometer (QCLAS)