The annual and monthly mean diurnal variations of the diffuse fraction of global solar
irradiance arriving on the ground at a tropical station in Sub-Sahel Africa is here been …

Formulas that directly yield intensities of direct and diffuse radiation on horizontal surfaces
from measurements of hourly total radiation only have been developed. Alternatively …

In addition to global solar radiation E↓ g, the hourly diffuse component E↓ d incident on a
horizontal surface has been measured from February 1993 to January 1995 at a …

In this paper, equations have been developed to estimate diffuse fraction of the hourly, daily
and monthly global insolation on a horizontal surface. These correlations are expressed in …

A statistical procedure has been employed to develop correlations between the hourly
global horizontal radiation and its diffuse component. Several years', hourly radiation data …

Four methods of estimating hourly diffuse irradiation from hourly global irradiation are
compared, using global and diffuse irradiation data from the Australian Bureau of …

Solar irradiance data obtained at 33 US sites during parts or most of the period from January
1978 through December 1980 have been analyzed to study the division of global solar …

Several existing correlations between ratio of monthly mean daily global to extraterrestrial
radiation KT, and daily diffuse to global radiation, D/G, were tried for four Indian stations and …

This study has extended the work of Ideriah to establish correlations for the diffuse insolation
for the city of Ibadan. The set of daily diffuse radiation for the city for the year 1977, which is …

The relationship between (Q) total solar radiation, as measured by a solarimeter, and hours
of bright sunshine (n), as measured by a Campbell-Stokes recorder, has been examined on …