Whatever Happened To Band Models?

A. S. Zachor

doi:10.1117/12.931909

28 July 1981 Whatever Happened To Band Models?

A. S. Zachor

Proceedings Volume 0277, Atmospheric Transmission; (1981) https://doi.org/10.1117/12.931909
Event: 1981 Technical Symposium East, 1981, Washington, D.C., United States

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.

Citation Download Citation

A. S. Zachor "Whatever Happened To Band Models?", Proc. SPIE 0277, Atmospheric Transmission, (28 July 1981); https://doi.org/10.1117/12.931909

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