Atmospheric transmittance of an absorbing gas: a computationally fast and accurate transmittance model for absorbing gases with constant mixing ratios in inhomogeneous atmospheres
- 1 February 1976
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 15 (2), 358-363
- https://doi.org/10.1364/ao.15.000358
Abstract
At a given pressure level the atmospheric transmittance for an absorbing gas with a constant mixing ratio varies only with the temperature profile of the atmosphere. A simple transmittance model based on temperature differences is derived for monochromatic radiation. This model then is extended to the more important case of polychromatic radiation through the use of scaling approximations. The resulting algorithm for calculating transmittances for an arbitrary temperature profile is simple to use, accurate, and computationally fast because only arithmetic operations are required. In fact, resulting transmittances agreed with line-by-line calculations to within 0.0031 for the cases tried. Details for calculating the expansion coefficients are provided.Keywords
This publication has 2 references indexed in Scilit:
- Method to Apply Homogeneous-Path Transmittance Models to Inhomogeneous AtmospheresJournal of the Atmospheric Sciences, 1973
- Atmospheric Transmission in the CO_2 Bands Between 12 μ and 18 μApplied Optics, 1966