Abstract
The integrated-path differential-absorption lidar CHARM-F ( and Remote Monitoring—Flugzeug) was developed for the simultaneous measurement of the greenhouse gases and onboard the German research aircraft HALO (High Altitude and Long Range Research Aircraft). The purpose is to derive the weighted, column-averaged dry-air mixing ratios of the two gases with high precision and accuracy between aircraft and ground or cloud tops. This paper presents the first measurements, performed in the spring of 2015, and shows performance analyses as well as the methodology for the quantification of strong point sources applied on example cases. A measurement precision of below 0.5% for 20 km averages was found. However, individual measurements still show deviations of the absolute mixing ratios compared to corresponding data from in situ profiles. The detailed analysis of the methane point source emission rate yields plausible results ( or ), which is in good agreement with reported numbers. In terms of , a power plant emission could be identified and analyzed.
© 2017 Optical Society of America
Full Article | PDF ArticleMore Like This
Juan Du, Yadan Zhu, Shiguang Li, Junxuan Zhang, Yanguang Sun, Huaguo Zang, Dan Liu, Xiuhua Ma, Decang Bi, Jiqiao Liu, Xiaolei Zhu, and Weibiao Chen
Appl. Opt. 56(25) 7053-7058 (2017)
Tamer F. Refaat, Upendra N. Singh, Jirong Yu, Mulugeta Petros, Ruben Remus, and Syed Ismail
Appl. Opt. 55(15) 4232-4246 (2016)
Andreas Fix, Mathieu Quatrevalet, Axel Amediek, and Martin Wirth
Appl. Opt. 57(26) 7501-7514 (2018)