Airborne measurements of atmospheric methane column abundance using a pulsed integrated-path differential absorption lidar

被引:51
作者
Riris, Haris [1 ]
Numata, Kenji [2 ]
Li, Steve [3 ]
Wu, Stewart [3 ]
Ramanathan, Anand [4 ]
Dawsey, Martha [1 ]
Mao, Jianping [5 ]
Kawa, Randolph [1 ]
Abshire, James B. [1 ]
机构
[1] NASA, Goddard Space Flight Ctr, Sci & Explorat Directorate, Greenbelt, MD 20771 USA
[2] Univ Maryland, Dept Astron, College Pk, MD 20742 USA
[3] NASA, Goddard Space Flight Ctr, Lasers & Electopt Branch, Greenbelt, MD 20771 USA
[4] Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA
[5] NASA, Goddard Space Flight Ctr, Goddard Earth Sci Technol & Res, Greenbelt, MD 20771 USA
关键词
CARBON-DIOXIDE; NITROUS-OXIDE; CO2; SYSTEM; GOSAT; CH4; SENSITIVITY; SCIAMACHY; ALGORITHM; EMISSIONS;
D O I
10.1364/AO.51.008296
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
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. (C) 2012 Optical Society of America
引用
收藏
页码:8296 / 8305
页数:10
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