3. Investigation of global solar irradiance based on using a characteristic carve of a global irradiance

Abstract

For five weather observation stations in Naganuma, Tsukuba, Gifu, Tosu and Okinoerabu released by NEDO, horizontal global solar radiation HQH(IT,IJ) and spectral integrated wavelength S_HX(IT,IJ) were organized hourly. When these solar radiation amounts are arranged in descending order ignoring the year, it was found that a characteristic curve (solar radiation characteristic curve) is shown depending on the location and month. Using this, it were clear that correcting of uncertain data, relationship between the sunshine ratio and the monthly total solar radiation energy.