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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 23, Iss. 3 — Feb. 1, 1984
  • pp: 396–401

Atmospheric transmittance determination from sky radiance in real time in the tropics

Lee A. Young  »View Author Affiliations


Applied Optics, Vol. 23, Issue 3, pp. 396-401 (1984)
http://dx.doi.org/10.1364/AO.23.000396


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Abstract

A method is presented for determining in real time the infrared atmospheric transmittance along the line of sight of a tracking radiometer from measurements of background sky radiance. The case at hand involves observations from a high-altitude site in the tropics at wavelength bands from 8 to 21 μm. Hawaiian radiosonde atmospheric profiles were analyzed using the lowtran 5 spectroscopic code. Model atmospheres were found unsuitable for characterizing the variable meteorological conditions. The infrared transmittance and sky radiance are shown to have a very close correlation that allows determination of transmittance within a few percent from radiance data in spite of very large fluctuations in tropospheric humidity and variations in effective atmospheric temperature.

© 1984 Optical Society of America

History
Original Manuscript: September 22, 1983
Published: February 1, 1984

Citation
Lee A. Young, "Atmospheric transmittance determination from sky radiance in real time in the tropics," Appl. Opt. 23, 396-401 (1984)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-23-3-396

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