Gary Gillette, Stephen Treado

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


There are a number of ways to interpret the sky for daylighting purposes. For initial design, stationary (static) sky conditions, such as those standardized by the CIE, provide an acceptable representation of the extreme sky conditions. The use of correlations of daylight illuminance and sky luminance with solar information has been found useful in capturing the hourly trends in the sky as driven by the currently available weather hourly tapes. Most success has been found in the correlation of daylight illuminance with solar irradiance, yet moderate success has also been achieved relating the attenuation of the sky with cloud ratio, confirming the validity of this ratio as a measure of cloudiness. Noteworthy progress has been made in approximating the dynamics of the nonstandard, nonperfect sky.

Original languageEnglish (US)
Pages (from-to)23-27
Number of pages5
JournalLighting Design and Application: LD and A
Issue number3
StatePublished - Mar 1 1985

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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