Determination Of Atmospheric Water Vapor Content In Moderate Optical Paths By Radiometric Measurements

E. Trakhovsky; A. D. Devir; S. G. Lipson

doi:10.1117/12.932680

31 March 1982 Determination Of Atmospheric Water Vapor Content In Moderate Optical Paths By Radiometric Measurements

E. Trakhovsky, A. D. Devir, S. G. Lipson

Proceedings Volume 0304, Modern Utilization of Infrared Technology VII; (1982) https://doi.org/10.1117/12.932680
Event: 25th Annual Technical Symposium, 1981, San Diego, United States

Abstract

A comparison of experimental atmospheric transmittance with the predictions of the LOWTRAN 4 computer code requires accurate knowledge of the total water vapour content along the optical path. This quantity was measured, in terms of the integrated absorption of the 1.15 μm water vapour band, along distances of 5.6 and 7.1 km at sea level. Both the LOWTRAN 4 and the strong Goody models were used to deduct the water vapour content from the integrated absorption. The results were compared with experimental data obtained from conventional wet-and-dry-bulb thermometry. It was found that the data for this band in the LOWTRAN 4 model gives poor agreement whereas the use of the strong Goody model results in a considerable improvement.

Citation Download Citation

E. Trakhovsky, A. D. Devir, and S. G. Lipson "Determination Of Atmospheric Water Vapor Content In Moderate Optical Paths By Radiometric Measurements", Proc. SPIE 0304, Modern Utilization of Infrared Technology VII, (31 March 1982); https://doi.org/10.1117/12.932680

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