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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 11 — Jun. 3, 2013
  • pp: 13279–13292

Cross-band relative absorption technique for the measurement of molecular mixing ratios

Narasimha S. Prasad and Denis Pliutau  »View Author Affiliations


Optics Express, Vol. 21, Issue 11, pp. 13279-13292 (2013)
http://dx.doi.org/10.1364/OE.21.013279


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Abstract

We describe a new method for the measurement of molecular mixing ratios called Cross-Band Relative Absorption (CoBRA). The proposed method is based on relative measurements in different molecular bands referenced to a band of O2 with properly selected wavelength combinations providing high level of cancelation in temperature sensitivities. The CoBRA approach is particularly promising for satellite based remote sensing of molecular mixing ratios of the atmospheric trace gases. Very low temperature sensitivities and the potential of achieving close weighting function matching for the measurement and reference wavelengths are the main advantages of the method. The effectiveness of CoBRA approach is demonstrated for the retrieval of CO2 mixing ratios (XCO2) with application to the ASCENDS mission.

© 2013 OSA

OCIS Codes
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(300.6360) Spectroscopy : Spectroscopy, laser
(010.1030) Atmospheric and oceanic optics : Absorption
(010.5620) Atmospheric and oceanic optics : Radiative transfer

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: December 10, 2012
Revised Manuscript: March 20, 2013
Manuscript Accepted: March 21, 2013
Published: May 24, 2013

Citation
Narasimha S. Prasad and Denis Pliutau, "Cross-band relative absorption technique for the measurement of molecular mixing ratios," Opt. Express 21, 13279-13292 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-11-13279


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