Low-altitude infrared propagation in a coastal zone: refraction and scattering
Doss-Hammel, Stephen M.
Zeisse, Carl R.
de Leeuw, Gerrit
de Jong, Arie N.
Frederickson, Paul A.
Davidson, Kenneth L.
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Midwave and long-wave infrared propagation were measured in the marine atmosphere close to the surface of the ocean. Data were collected near San Diego Bay for two weeks in November 1996 over a 15-km horizontal path. The data are interpreted in terms of effects expected from molecules, aerosol particles, and refraction. Aerosol particles are a dominant influence in this coastal zone. They induce a diurnal variation in transmission as their character changes with regular changes in wind direction. A refractive propagation factor calculation is introduced, and it is systematically applied to the model and to the data analysis. It is shown that this refractive propagation factor is a necessary component of a complete near-sea-surface infrared transmission model.
Applied Optics, Volume 41, No. 18, pp. 3706-3724 (20 June 2002)
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