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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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References

  1. L. A. Young, “Correlation of Emission and Absorption in a Real Tropical Atmosphere,” Avco Everett Research Laboratory, Research Report 508 (Feb.1982).
  2. H. Riehl, Tropical Meteorology (McGraw-Hill, New York, 1954).
  3. E. Palmen, C. W. Newton, Atmospheric Circulation Systems (Academic, New York, 1969), Chap. 14.
  4. J. S. Malkus, H. Riehl, Cloud Structure and Distributions Over The Tropical Pacific Ocean (U. Calif. Press, Berkeley, 1964).
  5. F. J. Brousaides, Bull. Am. Meteorol. Soc. 56, 229 (1975). [CrossRef]
  6. J. M. Miller, Ed., “Geophysical Monitoring for Climate Change/No. 3/Summary Report—1974,” National Oceanic and Atmospheric Administration, Environmental Research Laboratories (Aug.1975).
  7. B. G. Mendonca, J. Appl. Meteorol. 8, 533 (1969). [CrossRef]
  8. B. G. Mendonca, W. T. Iwaoka, J. Appl. Meteorol. 8, 213 (1969). [CrossRef]
  9. R. A. McClatchey, R. W. Fenn, J. E. A. Selby, F. E. Volz, J. S. Garing, “Optical Properties of Atmosphere (Third Edition),” AFCRL-72-0497 (24Aug.1972).
  10. F. X. Kneizys et al., “Atmospheric Transmittance/Radiance: Computer Code lowtran 5,” AFGL-TR-80-0067 (21Feb.1980).

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