Methane optical density measurements with an integrated path differential absorption lidar from an airborne platform

Haris Riris; Kenji Numata; Stewart Wu; Brayler Gonzalez; Michael Rodriguez; Stan Scott; Stephan Kawa; Jianping Mao

doi:10.1117/1.JRS.11.034001

1 September 2017 Methane optical density measurements with an integrated path differential absorption lidar from an airborne platform

Haris Riris, Kenji Numata, Stewart Wu, Brayler Gonzalez, Michael Rodriguez, Stan Scott, Stephan Kawa, Jianping Mao

Author Affiliations +

Journal of Applied Remote Sensing, Vol. 11, Issue 3, 034001 (September 2017). https://doi.org/10.1117/1.JRS.11.034001

Abstract

We report on an airborne demonstration of atmospheric methane (CH4) measurements with an integrated path differential absorption lidar using an optical parametric amplifier and optical parametric oscillator laser transmitter and sensitive avalanche photodiode detector. The lidar measures the atmospheric CH4 absorption at multiple, discrete wavelengths near 1650.96 nm. The instrument was deployed in the fall of 2015, aboard NASA’s DC-8 airborne laboratory along with an in situ spectrometer and measured CH4 over a wide range of surfaces and atmospheric conditions from altitudes of 2 to 13 km. We will show the results from our flights, compare the performance of the two laser transmitters, and identify areas of improvement for the lidar.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Haris Riris, Kenji Numata, Stewart Wu, Brayler Gonzalez, Michael Rodriguez, Stan Scott, Stephan Kawa, and Jianping Mao "Methane optical density measurements with an integrated path differential absorption lidar from an airborne platform," Journal of Applied Remote Sensing 11(3), 034001 (1 September 2017). https://doi.org/10.1117/1.JRS.11.034001

Received: 26 May 2017; Accepted: 3 August 2017; Published: 1 September 2017

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KEYWORDS

LIDAR

Optical parametric oscillators

Absorption

Transmitters

Methane

Sensors

Absorbance

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