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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52 citations as recorded by crossref.
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- Toward a versatile spaceborne architecture for immediate monitoring of the global methane pledge Y. Wang et al.
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- Compact and lightweight mid-infrared laser spectrometer for balloon-borne water vapor measurements in the UTLS M. Graf et al.
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- The Application of UAVs in the Evaluation of Thermal Comfort Levels in Buildings Equipped with Internal Greenhouses M. Conceição et al.
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- Combustion, Chemistry, and Carbon Neutrality K. Kohse-Höinghaus
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- Sensitive and miniaturized methane sensor operated at heating-mode of DFB laser H. Zhang et al.
- Design and development of a miniature mid-infrared linear variable filter based spectrometer for environmental sensing F. Łabaj et al.
- Visual Robot-Aided Laser Standoff Methane Sensor for Pipeline Leak Detection J. Li et al.
- Quantifying methane emissions from coal mining ventilation shafts using an unmanned aerial vehicle (UAV)-based active AirCore system T. Andersen et al.
- UAV-based in situ measurements of CO2 and CH4 fluxes over complex natural ecosystems A. Bolek et al.
- Allan Variance Characterization of Compact Fourier Transform Infrared Spectrometers G. Adib et al.
- Feature Domain Transform Filter for the Removal of Inherent Noise Bound to the Absorption Signal J. Sun et al.
- An Improved Workflow in Mass Balance Approach for Estimating Regional Methane Emission Rate Using Satellite Measurements J. Bian et al.
- Compact carbon dioxide sensor using tunable diode laser absorption spectroscopy for capnographic monitoring J. Li et al.
- Local-to-regional methane emissions from the Upper Silesian Coal Basin (USCB) quantified using UAV-based atmospheric measurements T. Andersen et al.
- Quantum cascade laser absorption spectrometer with a low temperature multipass cell for precision clumped CO2 measurement A. Nataraj et al.
- Recent Progress in Infrared Absorption Spectroscopy for Gas Sensing With Discrete Optics, Hollow-Core Fibers and On-Chip Waveguides C. Zheng et al.
- 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.
- In-flight characterization of a compact airborne quantum cascade laser absorption spectrometer L. Ort et al.
- Laser sensors for energy systems and process industries: Perspectives and directions A. Farooq et al.
52 citations as recorded by crossref.
- Advances in sustainable turquoise hydrogen production via methane pyrolysis in molten metals D. Boretti
- Integrated mobile monitoring and atmospheric modeling for methane emission assessment in an industrial-agricultural hub: A case study of Binzhou, China Y. Luo et al.
- Enhancing Gas Diffusion in Antiresonant Hollow-Core Fiber Gas Sensors Using Microchannels P. Kozioł et al.
- Integrated Nanophotonic Waveguide-Based Devices for IR and Raman Gas Spectroscopy S. Alberti et al.
- Controlled-release experiment to investigate uncertainties in UAV-based emission quantification for methane point sources R. Morales et al.
- A High‐Resolution Miniaturized Mid‐Wave Infrared Spectrometer Operating at Room Temperature Y. Sheng et al.
- Development of an Integrated Lightweight Multi-Rotor UAV Payload for Atmospheric Carbon Dioxide Mole Fraction Measurements T. Zhao et al.
- Evaluating the use of an Unmanned Aerial Vehicle (UAV)-based active AirCore system to quantify methane emissions from dairy cows K. Vinković et al.
- Quartz crystal tuning fork enhanced spectroscopy with self-calibration algorithms J. Du et al.
- Wavelength modulation spectroscopy of nitric oxide using a quantum cascade laser in intermittent continuous wave operation K. Duan et al.
- Rapid Detection of Volatile Organic Compounds by Switch–Scan Tuning of Vernier Quantum-Cascade Lasers R. Brechbühler et al.
- Towards real-time active imaging of greenhouse gases using tunable mid-infrared all-fiber lasers L. Michaud et al.
- Extending the optical path of segmented circular multipass cells by reiteration of reflection patterns L. Heilmann et al.
- Advancing atmospheric pollution monitoring with airborne THz spectrometer C. Moffa et al.
- Toward a versatile spaceborne architecture for immediate monitoring of the global methane pledge Y. Wang et al.
- High-precision laser spectrometer for multiple greenhouse gas analysis in 1 mL air from ice core samples B. Bereiter et al.
- Compact and lightweight mid-infrared laser spectrometer for balloon-borne water vapor measurements in the UTLS M. Graf et al.
- Sensitive Discrete Frequency Mid-Infrared Absorption Spectroscopy Using Digitally Referenced Detection R. Ho et al.
- Quantum cascade laser (QCL) in airborne atmospheric measurements: a review [Invited] F. D’Amato et al.
- 1/f Noise Characteristics of Waveguide-Integrated PbTe MIR Detectors and Impact on Limit of Detection E. Guglielmi et al.
- Laser photo-acoustic methane sensor (7.7 µm) for use at unmanned aerial vehicles I. Sherstov et al.
- MOF(CuBDC)-Microcantilever IR Spectroscopy for Methane Sensing with High Sensitivity and Selectivity S. Seo et al.
- SI-traceable validation of a laser spectrometer for balloon-borne measurements of water vapor in the upper atmosphere S. Brunamonti et al.
- Towards Fast Quantum Cascade Laser Spectrometers for High-Throughput and Cost-Effective Disease Surveillance M. Pazmiño-Betancourth et al.
- Absorption and dispersion: In search of a versatile spectroscopic technique I. Gazizov et al.
- Detection technologies and sensing systems for crop pest identification and infestation severity prediction: a review T. Chen et al.
- Target Acquisition for Collimation System of Wireless Quantum Communication Networks in Low Visibility K. Li et al.
- High potential for CH4 emission mitigation from oil infrastructure in one of EU's major production regions F. Stavropoulou et al.
- Progress in monitoring methane emissions from landfills using drones: an overview of the last ten years D. Fosco et al.
- Toward Establishing a Low-cost UAV Coordinated Carbon Observation Network (LUCCN): First Integrated Campaign in China D. Yang et al.
- Tunable laser spectrometer for the miniaturized total organic carbon analyzer F. Winiberg et al.
- Stationary and drone-assisted methane plume localization with dispersion spectroscopy M. Soskind et al.
- The Application of UAVs in the Evaluation of Thermal Comfort Levels in Buildings Equipped with Internal Greenhouses M. Conceição et al.
- Sub-ppm Methane Detection with Mid-Infrared Slot Waveguides H. Yallew et al.
- Lidar-based gas analyzer for remote sensing of atmospheric methane V. Meshcherinov et al.
- Combustion, Chemistry, and Carbon Neutrality K. Kohse-Höinghaus
- Ring-amplified shock tube for variable-gain, multi-wavelength absorption spectroscopy C. Strand et al.
- Sensitive and miniaturized methane sensor operated at heating-mode of DFB laser H. Zhang et al.
- Design and development of a miniature mid-infrared linear variable filter based spectrometer for environmental sensing F. Łabaj et al.
- Visual Robot-Aided Laser Standoff Methane Sensor for Pipeline Leak Detection J. Li et al.
- Quantifying methane emissions from coal mining ventilation shafts using an unmanned aerial vehicle (UAV)-based active AirCore system T. Andersen et al.
- UAV-based in situ measurements of CO2 and CH4 fluxes over complex natural ecosystems A. Bolek et al.
- Allan Variance Characterization of Compact Fourier Transform Infrared Spectrometers G. Adib et al.
- Feature Domain Transform Filter for the Removal of Inherent Noise Bound to the Absorption Signal J. Sun et al.
- An Improved Workflow in Mass Balance Approach for Estimating Regional Methane Emission Rate Using Satellite Measurements J. Bian et al.
- Compact carbon dioxide sensor using tunable diode laser absorption spectroscopy for capnographic monitoring J. Li et al.
- Local-to-regional methane emissions from the Upper Silesian Coal Basin (USCB) quantified using UAV-based atmospheric measurements T. Andersen et al.
- Quantum cascade laser absorption spectrometer with a low temperature multipass cell for precision clumped CO2 measurement A. Nataraj et al.
- Recent Progress in Infrared Absorption Spectroscopy for Gas Sensing With Discrete Optics, Hollow-Core Fibers and On-Chip Waveguides C. Zheng et al.
- 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.
- In-flight characterization of a compact airborne quantum cascade laser absorption spectrometer L. Ort et al.
- Laser sensors for energy systems and process industries: Perspectives and directions A. Farooq et al.
Saved (final revised paper)
Latest update: 02 May 2026
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...