The Color of the Sky


The color of the sky in day-time and at twilight is studied by means of spectroscopy, which provides an unambiguous way to understand and quantify why a sky is blue, pink, or red. The colors a daylight sky can take primarily owe to Rayleigh extinction and ozone absorption. Spectra of the sky illuminated by the sun can generally be represented by a generic analytical expression which involves the Rayleigh function , ozone absorption, and, to a lesser extend, aerosol extinction. This study is based on a representative sample of spectra selected from a few hundred observations taken in different places, times, and dates, with a portable fiber spectrometer.

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F. Zagury, "The Color of the Sky," Atmospheric and Climate Sciences, Vol. 2 No. 4, 2012, pp. 510-517. doi: 10.4236/acs.2012.24045.

Conflicts of Interest

The authors declare no conflicts of interest.


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