Abstract

An attempt is made to develop a set of empirical equations for the relationship between skylight illuminance, turbidity, and solar altitude under the condition of a cloud free sky. The maximum possible illuminance from a cloud-free sky is estimated using these equations. The illuminances are stated in relation to the illuminance produced by a Rayleigh sky. An improved approximation for Bemporad’s airmass function is used in the computations.

© 1975 Optical Society of America

Sky Brightness and Polarization During the 1973 African Eclipse

Glenn E. Shaw
Appl. Opt. 14(2) 388-394 (1975)

Sky color near the horizon during a total solar eclipse

Stanley David Gedzelman
Appl. Opt. 14(12) 2831-2837 (1975)

Derivation of the Photometric Flux of Daylight from Filtered Measurements of Global (Sun and Sky) Radiant Energy

A. J. Drummond and A. K. Ångström
Appl. Opt. 10(9) 2024-2030 (1971)

Circumsolar Sky Radiation and Turbidity of the Atmosphere

Anders Ångström
Appl. Opt. 13(3) 474-477 (1974)

Use of sky brightness measurements from ground for remote sensing of particulate polydispersions

Teruyuki Nakajima, Glauco Tonna, Ruizhong Rao, Paolo Boi, Yoram Kaufman, and Brent Holben
Appl. Opt. 35(15) 2672-2686 (1996)