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Proceedings Paper

Whatever Happened To Band Models?
Author(s): A. S. Zachor
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Paper Abstract

Many of the available low-resolution models for calculating atmospheric IR spectral transmittance, including LOWTRAN, represent the transmittance as an empirically-derived function of a single composite variable. As a result, the calculated transmittances will be accurate only If "strong-line" conditions prevail. Accuracy is also compromised in the empirical models when too few of the function parameters are allowed to depend on species and wavelength, or when a single empirical function is used for many species and at all wavelengths. A generalized band model will be described that uses more accurate trans-mission functions having two composite variables (like the classical band models) and four to six wavelength-dependent parameters. Calculations based on this model have been used to estimate the magnitude of errors in some CO2 and 03 transmittances and radiances computed by the empirical models.

Paper Details

Date Published: 28 July 1981
PDF: 11 pages
Proc. SPIE 0277, Atmospheric Transmission, (28 July 1981); doi: 10.1117/12.931909
Show Author Affiliations
A. S. Zachor, Atmospheric Radiation Consultants, Inc. (United States)


Published in SPIE Proceedings Vol. 0277:
Atmospheric Transmission
Robert W. Fan, Editor(s)

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