OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 7, Iss. 5 — May. 1, 1968
  • pp: 891–898

The Effect of Cirrus Clouds on 8–13-μ Infrared Sky Radiance

Freeman F. Hall, Jr.  »View Author Affiliations


Applied Optics, Vol. 7, Issue 5, pp. 891-898 (1968)
http://dx.doi.org/10.1364/AO.7.000891


View Full Text Article

Enhanced HTML    Acrobat PDF (1121 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

An experimental investigation of ir sky radiance and radiance fluctuations in the 8–13-μ atmospheric window is reported. Measurements were made with ground-based, filtered bolometer detector radiometers under clear sky and cirrus overcast conditions. Sky radiance was measured very close to the limb of the sun to permit detection of the solar aureole caused by forward scattering by cirrus ice crystals. Polarized sky radiance was found at large zenith angles and is attributed to scattering by cirrus of thermal emission from the earth. The radiance due to tropospheric water vapor is predicted by means of a radiation chart. Measurements of clear sky radiance exceeded that predicted by the chart in all but one case. The radiance of visible cirrus greatly exceeds the radiation chart prediction. Diffraction about cirrus cloud particles leads to a prediction of a solar aureole of a size that corresponds to the measured aureole. It is concluded that even a cirrus haze, which is quite difficult for an unaided, ground-based observer to detect, can cause an excess zenith radiance of 0.1 mW cm−2sr−1, which increases to twice this value at a zenith angle of 60°. Even thin but visible cirrus clouds can easily produce an excess zenith radiance of 1 mW cm−2sr−1, which increases by a factor 1.4 at a zenith angle of 60°.

© 1968 Optical Society of America

History
Original Manuscript: December 20, 1967
Published: May 1, 1968

Citation
Freeman F. Hall, "The Effect of Cirrus Clouds on 8–13-μ Infrared Sky Radiance," Appl. Opt. 7, 891-898 (1968)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-7-5-891


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. J. Strong, J. Franklin Inst. 232, 1 (1941). [CrossRef]
  2. G. D. Robinson, Quart. J. Roy. Meteorol. Soc. 73, 127 (1947). [CrossRef]
  3. J. Westphal, Mem. Soc. Roy. Sci. Liege 9 (Ser. 5), 357 (1964).
  4. H. J. Bolle, Final Rept. AF61(052)–488, AFCRL–64–567 II (AD 623 406)University of Munich (1965).
  5. G. D. Robinson, Quart. J. Roy. Meteorol. Soc. 76, 37 (1950). [CrossRef]
  6. C. B. Farmer, P. J. Key, Appl. Opt. 4, 1051 (1965). [CrossRef]
  7. H. Weickmann, Ber. Deut. Wetter. U. S. Zone 6, 61 (1949).
  8. S. Chandrasekhar, Radiative Transfer (Dover Publications, Inc., New York, 1960), p. 248.
  9. M. Minnaert, in The Sun, G. Kuiper, Ed. (The University of Chicago Press, Chicago, 1953) pp. 102, 130.
  10. H. C. van de Hulst, in The Sun, G. Kuiper, Ed. (The University of Chicago Press, Chicago, 1953), p. 246.
  11. A. Adel, E. S. Epstein, J. Meteorol. 16, 548 (1959). [CrossRef]
  12. R. M. Goody, Atmospheric Radiation (Oxford University Press, London1964), p. 249.
  13. F. Möller, Nomogramme für den Reichswetterdienst, Reichsant für Wetterdienst (Springer-Verlag, Berlin, 1943), pp. 38–43.
  14. H. J. Bolle, F. Möller, W. Zdunkowski, Tech. Rept. No. 2, AF 61 (052)–488, AFCRL–63–680 (AD 416 497)University of Munich (1963).
  15. W. T. Roach, R. M. Goody, Quart. J. Roy. Meteorol. Soc. 84, 319 (1958). [CrossRef]
  16. D. Deirmendjian, R. Clasen, W. Viezee, J. Opt. Soc. Am. 51, 620 (1961). [CrossRef]
  17. D. Deirmendjian, Appl. Opt. 3, 187 (1964). [CrossRef]
  18. H. W. Yates, J. H. Taylor, NRL Rept. 5433 (1960).
  19. W. E. K. Middleton, Vision Through the Atmosphere (The University of Toronto Press, Toronto, 1952), p. 104.
  20. K. Bullrich, in Advances in Geophysics, H. E. Landsberg, J. van Miegham Eds. (Academic Press, Inc., New York, 1964), Vol. 10. [CrossRef]
  21. M. Migeotte, L. Neven, J. Swensson, The Solar Spectrum from 2.8 to 23.7 Microns, University of Liege Final Rept., AF 61 (514)–432 (AD 210 043, 210 044) (1957).
  22. L. D. Kislovskii, Opt. Spectrosc. 7, 201 (1959).
  23. G. N. Plass, Appl. Opt. 5, 279 (1966). [CrossRef] [PubMed]
  24. R. O. Gumprecht, C. M. Sliepcevich, J. Phys. Chem. 57, 90 (1953). [CrossRef]
  25. R. G. Stone, USAF Air Weather Service TR 105–130 (1957).
  26. F. F. Hall, Ph.D. Dissertation, UCLA (1967), also Douglas A/C Report DAC–61306.
  27. F. F. Hall, Appl. Opt. 3, 781 (1964). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited