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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 7, Iss. 11 — Nov. 1, 1968
  • pp: 2264–2269

A Physical Model of Cirrus 8–13-μ Infrared Radiance

Freeman F. Hall, Jr.  »View Author Affiliations


Applied Optics, Vol. 7, Issue 11, pp. 2264-2269 (1968)
http://dx.doi.org/10.1364/AO.7.002264


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Abstract

A simplified physical model of cirrus cloud 8–13-μ radiance is derived, in an attempt to explain measured cloud radiance characteristics. Thermal emission and scattering of irradiance from the earth are considered separately. The scattering diagram for a 50-μ radius ice sphere, which is opaque at these wavelengths, is computed from diffraction theory and specular surface reflection. Thermal emission is found to exceed scattered radiance significantly for all zenith angles, and computed radiance values are found to match measured cloud radiance closely.

© 1968 Optical Society of America

History
Original Manuscript: June 10, 1968
Published: November 1, 1968

Citation
Freeman F. Hall, "A Physical Model of Cirrus 8–13-μ Infrared Radiance," Appl. Opt. 7, 2264-2269 (1968)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-7-11-2264


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References

  1. F. F. Hall, Appl. Opt. 7, 891 (1968). [CrossRef] [PubMed]
  2. Z. Sekera, “Radiative Transfer in a Planetary Atmosphere with Imperfect Scattering,” Rand Corp. R–413–PR, June1963 (AD 407 493).
  3. R. K. McDonald, R. W. Deltenre, J. Opt. Soc. Amer. 53, 860 (1963). [CrossRef]
  4. G. Yamamoto, M. Tanaka, K. Kamitani, J. Atmos. Sci. 23, 305 (1966). [CrossRef]
  5. H. Weickmann, Ber. Deut. Wetter. U. S. Zone 6, 61 (1949) (available from NASA as R&T 273).
  6. H. C. van de Hulst, Light Scattering by Small Particles (John Wiley & Sons, Inc., New York, 1957), p. 111.
  7. W. M. Irvine, J. B. Pollack, Icarus 8, 324 (1968). [CrossRef]
  8. D. Deirmendjian, R. Clasen, W. Viezee, J. Opt. Soc. Amer. 51, 620 (1961). [CrossRef]
  9. S. Twomey, Tables of Scattering and Extinction Efficiencies, unpublished computations by U. S. Weather Bureau, Washington, D. C. (1963).
  10. Ref. 6, p. 99.
  11. J. R. Hodkinson, in Electromagnetic Scattering, M. Kerker, Ed. (Pergamon Press, Inc., New York, 1963), pp. 87–100.
  12. F. F. Hall, Appl. Opt. 3, 781 (1964). [CrossRef]
  13. R. O. Gumprecht, C. M. Sliepevich, Phys. Chem. 57, 90 (1953). [CrossRef]
  14. P. J. Klass, Aviation Week & Space Technol. 88, 80 (1968).

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