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Original Research Papers

Pulsed airborne lidar measurements of atmospheric CO2 column absorption

Authors:

James B. Abshire ,

NASA Goddard Space Flight Center, Greenbelt, MD 20771, US
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Haris Riris,

NASA Goddard Space Flight Center, Greenbelt, MD 20771, US
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Graham R. Allan,

Sigma Space Inc., Lanham, MD 20706, US
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Clark J. Weaver,

Goddard Earth Sciences and Technology Center, University of Maryland Baltimore County, Baltimore, MD 21228, US
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Jianping Mao,

Goddard Earth Sciences and Technology Center, University of Maryland Baltimore County, Baltimore, MD 21228, US
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Xiaoli Sun,

NASA Goddard Space Flight Center, Greenbelt, MD 20771, US
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William E. Hasselbrack,

Sigma Space Inc., Lanham, MD 20706, US
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S. Randoph Kawa,

NASA Goddard Space Flight Center, Greenbelt, MD 20771, US
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Sebastien Biraud

Lawrence Berkeley National Laboratory, Berkeley, CA 94720, GB
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Abstract

We report initial measurements of atmospheric CO2 column density using a pulsed airborne lidar operating at 1572 nm. It uses a lidar measurement technique being developed at NASA Goddard Space Flight Center as a candidate for the CO2 measurement in the Active Sensing of CO2 Emissions over Nights, Days and Seasons (ASCENDS) space mission. The pulsed multiple-wavelength lidar approach offers several new capabilities with respect to passive spectrometer and other lidar techniques for high-precision CO2 column density measurements. We developed an airborne lidar using a fibre laser transmitter and photon counting detector, and conducted initial measurements of the CO2 column absorption during flights over Oklahoma in December 2008. The results show clear CO2 line shape and absorption signals. These follow the expected changes with aircraft altitude from 1.5 to 7.1 km, and are in good agreement with column number density estimates calculated from nearly coincident airborne in-situ measurements.

How to Cite: Abshire, J.B., Riris, H., Allan, G.R., Weaver, C.J., Mao, J., Sun, X., Hasselbrack, W.E., Kawa, S.R. and Biraud, S., 2010. Pulsed airborne lidar measurements of atmospheric CO2 column absorption. Tellus B: Chemical and Physical Meteorology, 62(5), pp.770–783. DOI: http://doi.org/10.1111/j.1600-0889.2010.00502.x
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  Published on 01 Jan 2010
 Accepted on 22 Jul 2010            Submitted on 29 Dec 2009

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