Environmental Characteristics on Spectral Irradiance of Solar Energy

Abstract

Detailed analyses of radiated solar energy on the surface of the earth are requested as it is practically utilized not only for the up-to-date design of daylight buildings but also for the solid-state energy conversion of sunshine.
This paper deals with the accumulated quantitative data on spectral irradiance of solar energy for a period of five years conducted at the Aichi Institute of Technology making use of an excellent system of spectro-radiometer.
The global and scattered characteristics of solar radiation under clear sky are compared and discussed in detail by taking the diurnal, seasonal and yearly variations into consideration. The typical irradiance at 550 nm is also discussed in relation to the accepted total power and the altitude of the sun respectively.