Airborne measurements of atmospheric methane column abundance using a pulsed integrated-path differential absorption lidar
Applied Optics2012Vol. 51(34), pp. 8296–8296
Citations Over TimeTop 10% of 2012 papers
Haris Riris, Kenji Numata, Steve Li, Stewart Wu, Anand Ramanathan, Martha Dawsey, Jianping Mao, Randolph Kawa, James B. Abshire
Abstract
We report airborne measurements of the column abundance of atmospheric methane made over an altitude range of 3-11 km using a direct detection integrated-path differential-absorption lidar with a pulsed laser emitting at 1651 nm. The laser transmitter was a tunable, seeded optical parametric amplifier pumped by a Nd:YAG laser, and the receiver used a photomultiplier detector and photon-counting electronics. The results follow the expected changes with aircraft altitude, and the measured line shapes and optical depths show good agreement with theoretical calculations.
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