Carbon Dioxide Laser Absorption Spectrometer (CO2LAS) aircraft measurements of CO2

Lance E. Christensen; Gary D. Spiers; Robert T. Menzies; Joseph C. Jacob; Jason Hyon

doi:10.1117/12.896740

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13 September 2011 Carbon Dioxide Laser Absorption Spectrometer (CO2LAS) aircraft measurements of CO₂

Lance E. Christensen, Gary D. Spiers, Robert T. Menzies, Joseph C. Jacob, Jason Hyon

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Proceedings Volume 8159, Lidar Remote Sensing for Environmental Monitoring XII; 81590C (2011) https://doi.org/10.1117/12.896740
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

The Jet Propulsion Laboratory Carbon Dioxide Laser Absorption Spectrometer (CO2LAS) utilizes Integrated Path Differential Absorption (IPDA) at 2.05 μm to obtain CO₂ column mixing ratios weighted heavily in the boundary layer. CO2LAS employs a coherent detection receiver and continuous-wave Th:Ho:YLF laser transmitters with output powers around 100 milliwatts. An offset frequency-locking scheme coupled to an absolute frequency reference enables the frequencies of the online and offline lasers to be held to within 200 kHz of desired values. We describe results from 2009 field campaigns when CO2LAS flew on the Twin Otter. We also describe spectroscopic studies aimed at uncovering potential biases in lidar CO₂ retrievals at 2.05 μm.

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Lance E. Christensen, Gary D. Spiers, Robert T. Menzies, Joseph C. Jacob, and Jason Hyon "Carbon Dioxide Laser Absorption Spectrometer (CO2LAS) aircraft measurements of CO₂", Proc. SPIE 8159, Lidar Remote Sensing for Environmental Monitoring XII, 81590C (13 September 2011); https://doi.org/10.1117/12.896740

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