Spectral and Spatial UV Sky Radiance Measurements at a Seaside Resort Under Clear Sky and Slightly Overcast Conditions

Citations Over TimeTop 22% of 2013 papers

Abstract

Spatial measurements of the diffusely scattered sky radiance at a seaside resort under clear sky and slightly overcast conditions have been used to calculate the sky radiance distribution across the upper hemisphere. The measurements were done in the summer season when solar UV radiation is highest. The selected wavelengths were 307, 350 and 550 nm representing the UVB, UVA and VIS band. Absolute values of radiance differ considerably between the wavelengths. Normalizing the measured values by use of direct solar radiance made the spatial distributions of unequal sky radiance comparable. The results convey a spatial impression of the different distributions of the radiance at the three wavelengths. Relative scattered radiance intensity is one order of magnitude greater in UVB than in VIS, whereas in UVA lies roughly in between. Under slightly overcast conditions scattered radiance is increased at all three wavelengths by about one order of magnitude. These measurements taken at the seaside underline the importance of diffuse scattered radiance. The effect of shading parts of the sky can be estimated from the distribution of sky radiance. This knowledge might be useful for sun seekers and in the treatment of people staying at the seaside for therapeutic purposes.

Related Papers

• → An investigation of sky radiance from the measurement at a tropical site(2017)5 cited
• → A Study on Sky Radiance Distribution(1997)2 cited
• → Clear Sky Spatial Distribution of Solar Ultraviolet-B Radiance(1999)1 cited
• → INDICES TO ESTIMATE SKY RADIANCE DISTRIBUTION : A study on modeling sky radiance distribution Part 1(2002)1 cited
• Radiance distribution as a function of depth in the submarine environment. Part II. Overcast lighting with tables of radiance -K values for both overcast and sunny lighting conditions(1960)