Preprints
https://doi.org/10.5194/amtd-3-4675-2010
https://doi.org/10.5194/amtd-3-4675-2010

  02 Nov 2010

02 Nov 2010

Review status: this preprint was under review for the journal AMT but the revision 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.

 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
 
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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