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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/amtd-3-4675-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/amtd-3-4675-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.

Submitted as: research article 02 Nov 2010

Submitted as: research article | 02 Nov 2010

Review status
This discussion paper is a preprint. It 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 H. Riris et al.
  • 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.

H. Riris et al.
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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
H. Riris et al.
H. Riris et al.
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