Rannsókn á dagsbirtu á Íslandi : skynjun ljóss og lita

Abstract

Studying daylight is important, because light (both natural and artificial) has a profound effect on humans. The main objective of this study is to analyse some fundamental properties of daylight in Iceland, applying the concepts of environmental psychology emphasising the latest results in sensory psychology on cone fundamentals. The daylight variability in 1998 is dealt with in detail, with emphasis on daylight availability, daylight variability, the chromaticity of daylight as well as its seasonal and diurnal variations. The main findings are that the daylight availability is on the average 60 percent of theoretical upper bounds derived using clear sky conditions. It is also observed that the sky has a very high correlated colour temperature indicating that the colour of the sky is dominated by blue, without significant seasonal variations. Diurnal variations are, however, observed. Furthermore, deviation from the standard sky is detected. The author is not aware of any similar study on daylight in this geographical area.