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Applied Optics

Applied Optics


  • Vol. 17, Iss. 16 — Aug. 15, 1978
  • pp: 2591–2593

Mathematical expressions for molecular absorption in Lowtran 3B

Ronald R. Gruenzel  »View Author Affiliations

Applied Optics, Vol. 17, Issue 16, pp. 2591-2593 (1978)

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In the case of a band model concept for molecular line absorption, since the absorption coefficient is a rapidly varying function of frequency, the averaged transmittance does not, in general, obey the simple exponential law with range. Mathematical expressions are obtained for the molecular line absorbers in the Lowtran 3B computer code. These expressions exhibit a variation of transmission, which is exponential with the range raised to some power the value of which is dependent on the contributor.

© 1978 Optical Society of America

Original Manuscript: November 11, 1977
Published: August 15, 1978

Ronald R. Gruenzel, "Mathematical expressions for molecular absorption in Lowtran 3B," Appl. Opt. 17, 2591-2593 (1978)

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  1. J. E. A. Selby, E. P. Shettle, R. A. McClatchey, “Atmospheric Transmittance from 0.25 to 28.5 μm: Supplement LOWTRAN 3B,” AFGL Environmental Research Paper 587 (Air Force Geophysics Laboratory, Hanscom AFB, Mass., 1976).
  2. J. E. A. Selby, R. A. McClatchey, “Atmospheric Transmittance from 0.25 to 28.5 μm: Computer Code LOWTRAN 2,” AFCRL Environmental Research Paper 427 (AFCRL, Hanscom AFB, Mass., 1972).
  3. J. E. A. Selby, R. A. McClatchey, “Atmospheric Transmittance from 0.25 to 28.5 μm: Computer Code LOWTRAN 3,” AFCRL Environmental Research Paper 513 (AFCRL, Hanscom AFB, Mass., 1975).

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