High Altitude Aircraft Measurements of Carbon Monoxide Using Tunable Diode Lasers

Podolske, James R.; Leowenstein, Max; Blackburn, Thomas E.

doi:10.1007/978-94-009-3991-2_12

Cited by 1 publication

(2 citation statements)

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“…The red curve is the CO mean vertical profile obtained with the following procedure: we calculated the mean value of the CO mixing ratio for altitude intervals of 500 m; then we discarded the CO values which differ more than 90% from the mean value (in order to skip the CO anomalies); and finally we re-calculated the mean value in the altitude intervals. The CO vertical profiles shown in Figure 12 are consistent with CO data measured by other aircraft or satellite instruments [8,9,25,26]. …”

Section: Resultssupporting

confidence: 84%

“…For all these reasons, CO has been measured in numerous campaigns with different platforms [8,9,10,11,12,13,14] and taken using a large number of different measurement techniques. A review of all these methods, with particular attention to quite recent high sensitivity techniques, such as Cavity Ring Down Spectroscopy (CRDS), Cavity-Enhanced Absorption Spectroscopy (CEAS) and Integrated Cavity Output Spectroscopy (ICOS), often in combination with Quantum Cascade Lasers (QCL), can be found in [15].…”

Section: Introductionmentioning

confidence: 99%

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A Portable Quantum Cascade Laser Spectrometer for Atmospheric Measurements of Carbon Monoxide

Viciani

Montori

Chiarugi

et al. 2018

Sensors

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Trace gas concentration measurements in the stratosphere and troposphere are critically required as inputs to constrain climate models. For this purpose, measurement campaigns on stratospheric aircraft and balloons are being carried out all over the world, each one involving sensors which are tailored for the specific gas and environmental conditions. This paper describes an automated, portable, mid-infrared quantum cascade laser spectrometer, for in situ carbon monoxide mixing ratio measurements in the stratosphere and troposphere. The instrument was designed to be versatile, suitable for easy installation on different platforms and capable of operating completely unattended, without the presence of an operator, not only during one flight but for the whole period of a campaign. The spectrometer features a small size (80 × 25 × 41 cm3), light weight (23 kg) and low power consumption (85 W typical), without being pressurized and without the need of calibration on the ground or during in-flight operation. The device was tested in the laboratory and in-field during a research campaign carried out in Nepal in summer 2017, onboard the stratospheric aircraft M55 Geophysica. The instrument worked extremely well, without external maintenance during all flights, proving an in-flight sensitivity of 1–2 ppbV with a time resolution of 1 s.

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