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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 9 — Mar. 20, 2006
  • pp: 2028–2034

Atmospheric transmittance of an absorbing gas. 7. Further improvements to the OPTRAN 6 approach

Larry M. McMillin, Xiaozhen Xiong, Yong Han, Thomas J. Kleespies, and Paul Van Delst  »View Author Affiliations


Applied Optics, Vol. 45, Issue 9, pp. 2028-2034 (2006)
http://dx.doi.org/10.1364/AO.45.002028


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Abstract

We present recent improvements in accuracy to the fast transmittance-calculation procedure, Optical Path Transmittance (OPTRAN), which is used for satellite data assimilation at the National Oceanic and Atmospheric Administration. These improvements are (1) to change the absorber space used for ozone, (2) to add new predictors for each gas, and (3) to treat the water vapor line absorption and water continuum absorption as separate terms. Significant improvements in the accuracy of the OPTRAN algorithm for High-Resolution Infrared Radiation Sounders (HIRS) and the Atmospheric Infrared Sounder (AIRS) are demonstrated. The results that we show here extend a recent paper of Xiong and McMillin (2004) that describes the use of a polychromatic correction term to replace the effective transmittance concept to include additional changes that improve accuracy.

© 2006 Optical Society of America

OCIS Codes
(010.1300) Atmospheric and oceanic optics : Atmospheric propagation
(010.1320) Atmospheric and oceanic optics : Atmospheric transmittance
(010.3920) Atmospheric and oceanic optics : Meteorology

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: May 18, 2005
Revised Manuscript: September 30, 2005
Manuscript Accepted: September 30, 2005

Citation
Larry M. McMillin, Xiaozhen Xiong, Yong Han, Thomas J. Kleespies, and Paul Van Delst, "Atmospheric transmittance of an absorbing gas. 7. Further improvements to the OPTRAN 6 approach," Appl. Opt. 45, 2028-2034 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-9-2028

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