Measurement of the Solar Spcctral Irradiance at Tanashi, Tokyo

Abstract

For the utilization of the Solar Radiation, it is necessary to have knowledge about the spectral radiant power of the solar radiation on the earth's surface. From such a view point two kinds of measurements on the solar radiation were carried out by comparison with the irradiance of a spectral irradiance standard lamp during the whole period between July 1976 and February 1980 at Tanashi, Tokyo (35°43'N. L., 73m above the sea level). One is the measurement of the direct solar radiation onto a plane perpendicular to it in the wavelength range from 297.6 to 1083.7 nm for the period July 1976 to November 1978. The data of 628 Sets are obtained. Another is the measurement of the global solar radiation onto a horizontal plane in the wavelength range from 295. 1 to 1083.7 nm for the period December 1978 to February 1980. The data of 318 Sets are collected. Above two kinds of data are analyzed for many purposes.
This study has been reported in a series of publications of“Researches of the Electrotechnical Laboratory” (1981, 1981, 1983). This report is summary of above publications.