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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

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doi:10.5194/amtd-3-4675-2010
© Author(s) 2010. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
02 Nov 2010
Review status
This discussion paper has been under review for the journal Atmospheric Measurement Techniques (AMT). The revised manuscript was not accepted.
LIDAR technology for measuring trace gases on Mars and Earth
H. Riris1, K. Numata2, S. Li1, S. Wu1, X. Sun1, and J. Abshire1 1NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
2University of Maryland, Department of Astronomy, College Park, MD 20742, USA
Abstract. Trace gases and their isotopic ratios in planetary atmospheres offer important but subtle clues as to the origins of a planet's atmosphere, hydrology, geology, and potential for biology. Calculations show that an orbiting laser remote sensing instrument is capable of measuring trace gases on a global scale with unprecedented accuracy, and higher spatial resolution that can be obtained by passive instruments. Our proposed lidar uses Integrated Path Differential Absorption technique, Optical Parametric Amplifiers, and a receiver with high sensitivity detector at 1.65 μm to map methane concentrations, a strong greenhouse gas. For Mars we can use the same technique in the 3–4 μm spectral range to map various biogenic gas concentrations and search for the existence of life. Preliminary results demonstrating methane and water vapour detection using a laboratory prototype illustrate the viability of the technique.

Citation: Riris, H., Numata, K., Li, S., Wu, S., Sun, X., and Abshire, J.: LIDAR technology for measuring trace gases on Mars and Earth, Atmos. Meas. Tech. Discuss., 3, 4675-4705, doi:10.5194/amtd-3-4675-2010, 2010.
H. Riris et al.
Interactive discussionStatus: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version      Supplement - Supplement
 
RC C2011: 'ACPD-2010-142', Anonymous Referee #1, 10 Nov 2010 Printer-friendly Version Supplement 
SC C2157: 'Reply to reviewer's comments', Haris Riris, 04 Dec 2010 Printer-friendly Version Supplement 
 
RC C2522: 'Summary of my recommendations', Anonymous Referee #2, 24 Jan 2011 Printer-friendly Version 
 
AC C2755: 'Final Response', Haris Riris, 17 Feb 2011 Printer-friendly Version 
H. Riris et al.
H. Riris et al.

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