Summary
Measurements of global and direct solar radiation utilizing OG-530, RG-630 and RG-695 filters were performed at INPA-Manaus. The equipment used for these measurements was a set of Eppley Pyranometers. The signals were recorded with a Leeds and Northrup potentiographs. The measurements were performed during two clear days. With the data obtained it was possible to estimate the hourly variation of the atmospheric transmission coefficients corresponding to each spectral band. An hourly distribution of the global, direct and diffuse fluxes of solar radiation is presented.