Articles | Volume 14, issue 5
Atmos. Meas. Tech., 14, 3909–3922, 2021
https://doi.org/10.5194/amt-14-3909-2021
Atmos. Meas. Tech., 14, 3909–3922, 2021
https://doi.org/10.5194/amt-14-3909-2021
Research article
27 May 2021
Research article | 27 May 2021

Retrieval algorithm for the column CO2 mixing ratio from pulsed multi-wavelength lidar measurements

Xiaoli Sun et al.

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Cited articles

Abshire, J. B., Riris, H., Allan, G. R., Weaver, C., Mao, J., Sun, X., Hasselbrack, W. E., Kawa, S. R., and Biraud, S.: Pulsed airborne lidar measurements of atmospheric CO2 column absorption, Tellus B, 62, 770–783, https://doi.org/10.1111/j.1600-0889.2010.00502.x, 2010. 
Abshire, J. B., Riris, H., Weaver, C., Mao, J., Allan, G., Hasselbrack, W., and Browell, E. V.: Airborne measurements of CO2 column absorption and range using a pulsed direct-detection integrated path differential absorption lidar, Appl. Optics, 52, 4446–4461, https://doi.org/10.1364/AO.52.004446, 2013. 
Abshire, J. B., Ramanathan, A., Riris, H., Mao, J., Allan, G. R., Hasselbrack, W. E., Weaver, C. J., and Browell, E. V.: Airborne measurements of CO2 column concentration and range using a pulsed direct-detection IPDA lidar, Remote Sens., 6, 443–469, https://doi.org/10.3390/rs6010443, 2014. 
Abshire, J. B., Ramanathan, A. K., Riris, H., Allan, G. R., Sun, X., Hasselbrack, W. E., Mao, J., Wu, S., Chen, J., Numata, K., Kawa, S. R., Yang, M. Y. M., and DiGangi, J.: Airborne measurements of CO2 column concentrations made with a pulsed IPDA lidar using a multiple-wavelength-locked laser and HgCdTe APD detector, Atmos. Meas. Tech., 11, 2001–2025, https://doi.org/10.5194/amt-11-2001-2018, 2018. 
Allan, G. R., Sun, X., Abshire, J. B., Riris, H., Hasslbrack, W. E., Kawa, S. R. Numata, K., Mao, J., and Chen, J.: Atmospheric backscattering profiles from the 2017 ASCENDS/ABoVE airborne campaign measured by the CO2 Sounder lidar, 2019 Fall AGU Annual Meeting, 9–13 December 2019, San Francisco, CA, USA, Paper A51M-2726, 2019. 
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Short summary
This paper gives a detailed and complete description of the retrieval algorithm used in the multi-wavelength lidar for average column carbon dioxide mixing ratio measurements. The algorithm is similar to that used in passive trace-gas sounding and simultaneously solves for several parameters and provides the associated averaging kernel. The algorithm has been successfully used with the airborne lidar measurements. It can also be used with similar lidar for other trace-gas measurements.