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arXiv · 1308.0530

Spectroscopic measurements of a CO2 absorption line in an open vertical path using an airborne lidar

Anand Ramanathan·Jianping Mao·Graham R Allan·Haris Riris·Clark J Weaver·William E Hasselbrack·Edward V Browell·James B Abshire
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Abstract

We use an airborne pulsed integrated path differential absorption lidar to make spectroscopic measurements of the pressure-induced line broadening and line center shift of atmospheric CO2 at the 1572.335 nm absorption line. We measure the absorption lineshape in the vertical column between the aircraft and ground. A comparison of our measured absorption lineshape to calculations based on HITRAN shows excellent agreement with the peak optical depth accurate to within 0.3%. Additionally, we measure changes in the line center position to within 5.2 MHz of calculations, and the absorption linewidth to within 0.6% of calculations.

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Anand Ramanathan, Jianping Mao, Graham R Allan, Haris Riris, Clark J Weaver, William E Hasselbrack, Edward V Browell, James B Abshire. 2013-08-02. Spectroscopic measurements of a CO2 absorption line in an open vertical path using an airborne lidar. https://doi.org/10.1063/1.4832616

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