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 …

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 …

Global irradiation and sunshine duration data recorded at Trieste (CNR, Istituto
Talassografico di Trieste) during the 11-year period 1972–1982 are analyzed using the …

Abstract Following Garg and Garg, atmospheric water vapour content or specific humidity W
at is used along with sunshine duration to obtain a relation to estimate the global irradiation …

Abstract Recently, the Indian Meteorological Department has made available, for 13
locations in India, pyranometric data for total and diffuse radiation on an hourly and daily …

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

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

A simple model based on the intensity of direct and diffuse radiation expressed as fractions
of the intensity of the extraterrestrial radiation has been developed. Using these expressions …

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

Correlations for estimating monthly average daily global and diffuse radiation from sunshine
data and global radiation data are developed using measured values of these parameters at …