Atmospheric boundary layer CO2 remote sensing with a direct detection LIDAR instrument based on a widely tunable optical parametric source

Abstract : We report on the capability of a direct detection differential absorption lidar (DIAL) for range resolved and integrated path (IPDIAL) remote sensing of CO2 in the atmospheric boundary layer (ABL). The laser source is an amplified nested cavity optical parametric oscillator (NesCOPO) emitting approximately 8 mJ at the two measurement wavelengths selected near 2050 nm. Direct detection atmospheric measurements are taken from the ground using a 30 Hz frequency switching between emitted wavelengths. Results show that comparable precision measurements are achieved in DIAL and IPDIAL modes (not better than a few ppm) on high SNR targets such as near range ABL aerosol and clouds, respectively. Instrumental limitations are analyzed and degradation due to cloud scattering variability is discussed to explain observed DIAL and IPDIAL limitations.
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https://hal.archives-ouvertes.fr/hal-01632637
Contributor : Véronique Soullier <>
Submitted on : Friday, November 10, 2017 - 2:38:42 PM
Last modification on : Thursday, September 5, 2019 - 4:26:02 PM

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Erwan Cadiou, Dominique Mammez, Jean-Baptiste Dherbecourt, Guillaume Gorju, Jacques Pelon, et al.. Atmospheric boundary layer CO2 remote sensing with a direct detection LIDAR instrument based on a widely tunable optical parametric source. Optics Letters, Optical Society of America, 2017, 42 (20), pp.4044-4047. ⟨10.1364/OL.42.004044⟩. ⟨hal-01632637⟩

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