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Proceedings Paper

A lidar approach to measure CO2 concentrations from space for the ASCENDS Mission
Author(s): James B. Abshire; Haris Riris; Graham R. Allan; Clark J. Weaver; Jianping Mao; Xiaoli Sun; William E. Hasselbrack; Anthony Yu; Axel Amediek; Yonghoon Choi; Edward V. Browell
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Paper Abstract

We report on a lidar approach to measure atmospheric CO2 column concentration being developed as a candidate for NASA's ASCENDS mission. It uses a pulsed dual-wavelength lidar measurement based on the integrated path differential absorption (IPDA) technique. We demonstrated the approach using the CO2 measurement from aircraft in July and August 2009 over various locations. The results show clear CO2 line shape and absorption signals, which follow the expected changes with aircraft altitude from 3 to 13 km. The column absorption measurements show altitude dependence in good agreement with column number density estimates calculated from airborne in-situ measurements. The approaches for O2 measurements and for scaling the technique to space are discussed.

Paper Details

Date Published: 2 November 2010
PDF: 13 pages
Proc. SPIE 7832, Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing VI, 78320D (2 November 2010); doi: 10.1117/12.868567
Show Author Affiliations
James B. Abshire, NASA Goddard Space Flight Ctr. (United States)
Haris Riris, NASA Goddard Space Flight Ctr. (United States)
Graham R. Allan, Sigma Space Inc. (United States)
Clark J. Weaver, Goddard Earth Sciences and Technology Ctr., UMBC (United States)
Jianping Mao, Goddard Earth Sciences and Technology Ctr., UMBC (United States)
Xiaoli Sun, NASA Goddard Space Flight Ctr. (United States)
William E. Hasselbrack, Sigma Space Inc. (United States)
Anthony Yu, Goddard Earth Sciences and Technology Ctr., UMBC (United States)
Axel Amediek, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Yonghoon Choi, NASA Langley Research Ctr. (United States)
Edward V. Browell, NASA Langley Research Ctr. (United States)


Published in SPIE Proceedings Vol. 7832:
Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing VI
Upendra N. Singh; Gelsomina Pappalardo, Editor(s)

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