Articles | Volume 13, issue 9
https://doi.org/10.5194/amt-13-4715-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-13-4715-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
A compact QCL spectrometer for mobile, high-precision methane sensing aboard drones
Laboratory for Air Pollution/Environmental Technology, Empa – Swiss Federal Laboratory for Materials Science and Technology, Überlandstraße 129, Dübendorf 8600, Switzerland
Manuel Graf
Laboratory for Air Pollution/Environmental Technology, Empa – Swiss Federal Laboratory for Materials Science and Technology, Überlandstraße 129, Dübendorf 8600, Switzerland
Jonas Ravelid
Laboratory for Air Pollution/Environmental Technology, Empa – Swiss Federal Laboratory for Materials Science and Technology, Überlandstraße 129, Dübendorf 8600, Switzerland
Philipp Scheidegger
Laboratory for Air Pollution/Environmental Technology, Empa – Swiss Federal Laboratory for Materials Science and Technology, Überlandstraße 129, Dübendorf 8600, Switzerland
André Kupferschmid
Transport at Nanoscale Interfaces, Empa – Swiss Federal Laboratory for Materials Science and Technology, Überlandstraße 129, Dübendorf 8600, Switzerland
Herbert Looser
Laboratory for Air Pollution/Environmental Technology, Empa – Swiss Federal Laboratory for Materials Science and Technology, Überlandstraße 129, Dübendorf 8600, Switzerland
Randulph Paulo Morales
Laboratory for Air Pollution/Environmental Technology, Empa – Swiss Federal Laboratory for Materials Science and Technology, Überlandstraße 129, Dübendorf 8600, Switzerland
Lukas Emmenegger
Laboratory for Air Pollution/Environmental Technology, Empa – Swiss Federal Laboratory for Materials Science and Technology, Überlandstraße 129, Dübendorf 8600, Switzerland
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- 1/f Noise Characteristics of Waveguide-Integrated PbTe MIR Detectors and Impact on Limit of Detection E. Guglielmi et al. 10.1109/JLT.2021.3111757
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- Wavelength modulation spectroscopy of nitric oxide using a quantum cascade laser in intermittent continuous wave operation K. Duan et al. 10.1016/j.saa.2024.125211
- Stationary and drone-assisted methane plume localization with dispersion spectroscopy M. Soskind et al. 10.1016/j.rse.2023.113513
- The Application of UAVs in the Evaluation of Thermal Comfort Levels in Buildings Equipped with Internal Greenhouses M. Conceição et al. 10.3390/cleantechnol5030055
- Sub-ppm Methane Detection with Mid-Infrared Slot Waveguides H. Yallew et al. 10.1021/acsphotonics.3c01085
- Rapid Detection of Volatile Organic Compounds by Switch–Scan Tuning of Vernier Quantum-Cascade Lasers R. Brechbühler et al. 10.1021/acs.analchem.2c04352
- Towards real-time active imaging of greenhouse gases using tunable mid-infrared all-fiber lasers L. Michaud et al. 10.1364/AO.486929
- Lidar-based gas analyzer for remote sensing of atmospheric methane V. Meshcherinov et al. 10.1016/j.snb.2024.136899
- Combustion, Chemistry, and Carbon Neutrality K. Kohse-Höinghaus 10.1021/acs.chemrev.2c00828
- Toward a versatile spaceborne architecture for immediate monitoring of the global methane pledge Y. Wang et al. 10.5194/acp-23-5233-2023
- High-precision laser spectrometer for multiple greenhouse gas analysis in 1 mL air from ice core samples B. Bereiter et al. 10.5194/amt-13-6391-2020
- Design and development of a miniature mid-infrared linear variable filter based spectrometer for environmental sensing F. Łabaj et al. 10.1364/OE.497564
- Quantifying methane emissions from coal mining ventilation shafts using an unmanned aerial vehicle (UAV)-based active AirCore system T. Andersen et al. 10.1016/j.aeaoa.2021.100135
- UAV-based in situ measurements of CO2 and CH4 fluxes over complex natural ecosystems A. Bolek et al. 10.5194/amt-17-5619-2024
- Allan Variance Characterization of Compact Fourier Transform Infrared Spectrometers G. Adib et al. 10.1177/00037028231174248
- Feature Domain Transform Filter for the Removal of Inherent Noise Bound to the Absorption Signal J. Sun et al. 10.1021/acs.analchem.2c02830
- Compact carbon dioxide sensor using tunable diode laser absorption spectroscopy for capnographic monitoring J. Li et al. 10.1080/00387010.2022.2041672
- Local-to-regional methane emissions from the Upper Silesian Coal Basin (USCB) quantified using UAV-based atmospheric measurements T. Andersen et al. 10.5194/acp-23-5191-2023
- Compact and lightweight mid-infrared laser spectrometer for balloon-borne water vapor measurements in the UTLS M. Graf et al. 10.5194/amt-14-1365-2021
- Quantum cascade laser absorption spectrometer with a low temperature multipass cell for precision clumped CO2 measurement A. Nataraj et al. 10.1364/OE.447172
- Recent Progress in Infrared Absorption Spectroscopy for Gas Sensing With Discrete Optics, Hollow-Core Fibers and On-Chip Waveguides C. Zheng et al. 10.1109/JLT.2023.3262774
- Sensitive Discrete Frequency Mid-Infrared Absorption Spectroscopy Using Digitally Referenced Detection R. Ho et al. 10.1021/acs.analchem.4c00134
- A measurement system for CO2 and CH4 emissions quantification of industrial sites using a new in situ concentration sensor operated on board uncrewed aircraft vehicles J. Bonne et al. 10.5194/amt-17-4471-2024
- In-flight characterization of a compact airborne quantum cascade laser absorption spectrometer L. Ort et al. 10.5194/amt-17-3553-2024
- Laser sensors for energy systems and process industries: Perspectives and directions A. Farooq et al. 10.1016/j.pecs.2022.100997
Latest update: 13 Dec 2024
Short summary
We describe a lightweight (2 kg) mid-IR laser spectrometer for airborne, in situ atmospheric methane (CH4) measurements. The instrument, based on an open-path circular multipass cell, provides fast response (1 Hz) and sub-parts-per-billion precision. It can easily be mounted on a drone, giving access to highly resolved 4D (spatial and temporal) data. The performance was assessed during field deployments involving artificial CH4 releases and vertical concentration gradients in the PBL.
We describe a lightweight (2 kg) mid-IR laser spectrometer for airborne, in situ atmospheric...