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Optical Engineering

Absorption Of Infrared Radiation By Atmospheric Water Vapor In The Region 4.3 To 5.5 Microns: Preliminary Measurements
Author(s): A. Ben-Shalom; A. D. Devir; S. G. Lipson; U. P. Oppenheim
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Paper Abstract

Experimental measurements of infrared transmittance are reported, which show that the computer code LOWTRAN-4 predicts too high a transmittance in the region 4.3 to 5.5 microns, and that the discrepancy is dependent on the water-vapor content. We have carried out experiments at various ranges up to 45 km in order to vary the precipitable water amount over a wide range, and, from the results, we have deduced that the anomalous transmittance results from an incorrect estimate of the continuum absorption, while the spectral component is substantially correct.

Paper Details

Date Published: 1 October 1981
PDF: 3 pages
Opt. Eng. 20(5) 205746 doi: 10.1117/12.7972801
Published in: Optical Engineering Volume 20, Issue 5
Show Author Affiliations
A. Ben-Shalom, Technion-Israel Institute of Technology (United States)
A. D. Devir, Technion-Israel Institute of Technology (Israel)
S. G. Lipson, Technion-Israel Institute of Technology (Israel)
U. P. Oppenheim, Technion-Israel Institute of Technology (Israel)

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