Color and spectral analysis of daylight in southern Europe.

@article{HernndezAndrs2001ColorAS,
  title={Color and spectral analysis of daylight in southern Europe.},
  author={Javier Hern{\'a}ndez-Andr{\'e}s and Javier Romero and Juan Luis Nieves and Raymond K K Lee},
  journal={Journal of the Optical Society of America. A, Optics, image science, and vision},
  year={2001},
  volume={18 6},
  pages={1325-35}
}
We have analyzed the colorimetric and spectral characteristics of 2600 daylight spectra (global spectral irradiances on a horizontal surface) measured for all sky states during a 2-year period at Granada, Spain. We describe in detail the chromaticity coordinates, correlated color temperatures (CCT), luminous efficacies, and relative UV and IR contents of Granada daylight. The chromaticity coordinates of Granada daylight lie far above the CIE locus at high CCTs (>9,000 K), and a CCT of 5,700 K… CONTINUE READING