A lidar approach to measure CO2 concentrations from space for the ASCENDS Mission

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

doi:10.1117/12.868567

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2 November 2010 A lidar approach to measure CO₂ concentrations from space for the ASCENDS Mission

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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Proceedings Volume 7832, Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing VI; 78320D (2010) https://doi.org/10.1117/12.868567
Event: SPIE Remote Sensing, 2010, Toulouse, France

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.

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James B. Abshire, Haris Riris, Graham R. Allan, Clark J. Weaver, Jianping Mao, Xiaoli Sun, William E. Hasselbrack, Anthony Yu, Axel Amediek, Yonghoon Choi, and Edward V. Browell "A lidar approach to measure CO₂ concentrations from space for the ASCENDS Mission", Proc. SPIE 7832, Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing VI, 78320D (2 November 2010); https://doi.org/10.1117/12.868567

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