Measurement of Spectral Insolation and Processing of Data for Solar Energy Utilization (2nd Report, Arrangement of Spectral Insolations Ranked by Normalization)

摘要

The measurement results of spectral insolation are ranked every 100W/m~2 based on global insolation. It is clarified that the spectra for total radiation in each ranking are similar to each other. Although the peak value of the spectra can be found at the wavelength of 0.48μm, on a clear day, energy of longer wavelength than the peak in the spectra is more attenuated than that on a cloudy day, so that the slope of the spectra is steep, and the absorption effect in the atmosphere is stronger than the other effect.