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Applied Optics

Applied Optics


  • Vol. 22, Iss. 4 — Feb. 15, 1983
  • pp: 563–567

Solar altitude frequency tables

R. S. McDowell  »View Author Affiliations

Applied Optics, Vol. 22, Issue 4, pp. 563-567 (1983)

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A table is presented that gives the total number of hours in the year during which the sun’s altitude exceeds a given value h, for h = 0–88° in 2° increments and for latitudes from the Equator to the North Pole in 2° increments. The table also gives corrections to these figures for the effect of atmospheric refraction and the total hours of daylight at each latitude.

© 1983 Optical Society of America

Original Manuscript: September 23, 1982
Published: February 15, 1983

R. S. McDowell, "Solar altitude frequency tables," Appl. Opt. 22, 563-567 (1983)

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  1. R. S. McDowell, J. Atmos. Sci. 31, 1876 (1974); compare the Appendix, p. 1883. [CrossRef]
  2. R. S. McDowell, J. Opt. Soc. Am. 69, 1119 (1979). [CrossRef]
  3. For example, W. M. Smart, Text-Book on Spherical Astronomy (Cambridge U.P., London, 1944), p. 35.
  4. Ref. 3, pp. 42 ff.
  5. Nautical Almanac for the Year 1966 (Nautical Almanac Office, Washington, D.C., 1964).
  6. B. D. Yallop, F. G. Watson, A. Milsom, Observatory 96, 196 (1976).

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