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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 29 — Oct. 10, 2009
  • pp: 5475–5483

Laser diode absorption spectroscopy for accurate CO 2 line parameters at 2 μm : consequences for space-based DIAL measurements and potential biases

Lilian Joly, Fabien Marnas, Fabien Gibert, Didier Bruneau, Bruno Grouiez, Pierre H. Flamant, Georges Durry, Nicolas Dumelie, Bertrand Parvitte, and Virginie Zéninari  »View Author Affiliations


Applied Optics, Vol. 48, Issue 29, pp. 5475-5483 (2009)
http://dx.doi.org/10.1364/AO.48.005475


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Abstract

Space-based active sensing of CO 2 concentration is a very promising technique for the derivation of CO 2 surface fluxes. There is a need for accurate spectroscopic parameters to enable accurate space-based measurements to address global climatic issues. New spectroscopic measurements using laser diode absorption spectroscopy are presented for the preselected R30 CO 2 absorption line ( ( 20 0 1 ) I I I ( 000 ) band) and four others. The line strength, air-broadening halfwidth, and its temperature dependence have been investigated. The results exhibit significant improvement for the R30 CO 2 absorption line: 0.4% on the line strength, 0.15% on the air-broadening coefficient, and 0.45% on its temperature dependence. Analysis of potential biases of space-based DIAL CO 2 mixing ratio measurements associated to spectroscopic parameter uncertainties are presented.

© 2009 Optical Society of America

OCIS Codes
(280.1910) Remote sensing and sensors : DIAL, differential absorption lidar
(300.6260) Spectroscopy : Spectroscopy, diode lasers

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: June 22, 2009
Revised Manuscript: September 11, 2009
Manuscript Accepted: September 11, 2009
Published: October 1, 2009

Citation
Lilian Joly, Fabien Marnas, Fabien Gibert, Didier Bruneau, Bruno Grouiez, Pierre H. Flamant, Georges Durry, Nicolas Dumelie, Bertrand Parvitte, and Virginie Zéninari, "Laser diode absorption spectroscopy for accurate CO2 line parameters at 2 μm: consequences for space-based DIAL measurements and potential biases," Appl. Opt. 48, 5475-5483 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-29-5475

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