Abstract

Improvements to a fast and accurate transmittance-calculation procedure, Optical Path TRANsmittance (optran), are described. The previous version computed a transmittance ratio for an absorbing layer. It required special attention to the interpolation methodology. The new approach reported here computes the absorption coefficient for an absorbing layer. This modified approach is not only simpler but also runs in one twentieth the time of the original optran approach with the same accuracy.

© 1995 Optical Society of America

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
Appl. Opt. 45(9) 2028-2034 (2006)

Atmospheric transmittance of an absorbing gas. 4. OPTRAN: a computationally fast and accurate transmittance model for absorbing gases with fixed and with variable mixing ratios at variable viewing angles

L. M. McMillin, L. J. Crone, M. D. Goldberg, and T. J. Kleespies
Appl. Opt. 34(27) 6269-6274 (1995)

Atmospheric transmittance of an absorbing gas. 6. OPTRAN status report and introduction to the NESDIS/NCEP community radiative transfer model

Thomas J. Kleespies, Paul van Delst, Larry M. McMillin, and John Derber
Appl. Opt. 43(15) 3103-3109 (2004)

Alternative to the effective transmittance approach for the calculation of polychromatic transmittances in rapid transmittance models

Xiaozhen Xiong and Larry M. McMillin
Appl. Opt. 44(1) 67-76 (2005)

Atmospheric transmittance of an absorbing gas. 3: A computationally fast and accurate transmittance model for absorbing gases with variable mixing ratios

Larry M. McMillin, Hernry E. Fleming, and Michael L. Hill
Appl. Opt. 18(10) 1600-1606 (1979)