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  CHARM-F—a new airborne integrated-path differential-absorption lidar for carbon dioxide and methane observations: measurement performance and quantification of strong point source emissions

Amediek, A., Ehret, G., Fix, A., Wirth, M., Büdenbender, C., Quatrevalet, M., et al. (2017). CHARM-F—a new airborne integrated-path differential-absorption lidar for carbon dioxide and methane observations: measurement performance and quantification of strong point source emissions. Applied Optics, 56(18), 5182-5197. doi:10.1364/AO.56.005182.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-E5F6-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-E6E4-A
Genre: Journal Article

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 Creators:
Amediek, Axel, Author
Ehret, Gerhard, Author
Fix, Andreas, Author
Wirth, Martin, Author
Büdenbender, Christian, Author
Quatrevalet, Mathieu, Author
Kiemle, Christoph, Author
Gerbig, Christoph1, Author              
Affiliations:
1Airborne Trace Gas Measurements and Mesoscale Modelling, Dr. habil. C. Gerbig, Department Biogeochemical Systems, Prof. M. Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497784              

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 Abstract: The integrated-path differential-absorption lidar CHARM-F (CO2 and CH4 Remote Monitoring—Flugzeug) was developed for the simultaneous measurement of the greenhouse gases CO2 and CH4 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 (26±3  m3/min or 9.2±1.15  kt CH4 yr−1), which is in good agreement with reported numbers. In terms of CO2, a power plant emission could be identified and analyzed.

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 Dates: 2017
 Publication Status: Published in print
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 Identifiers: Other: BGC2689
DOI: 10.1364/AO.56.005182
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Title: Applied Optics
Source Genre: Journal
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Publ. Info: Washington, DC : Optical Society of America
Pages: - Volume / Issue: 56 (18) Sequence Number: - Start / End Page: 5182 - 5197 Identifier: ISSN: 0003-6935
CoNE: /journals/resource/991042728167604