MODIFICATIONS OF THE HELIOSAT PROCEDURE FOR IRRADIANCE ESTIMATES FROMSATELLITE IMAGES

Authors
BEYER HG COSTANZO C HEINEMANN D
Citation
Hg. Beyer et al., MODIFICATIONS OF THE HELIOSAT PROCEDURE FOR IRRADIANCE ESTIMATES FROMSATELLITE IMAGES, Solar energy, 56(3), 1996, pp. 207-212
Citations number
22
Categorie Soggetti
Energy & Fuels
Journal title
Solar energy → ACNP
ISSN journal
0038092X
Volume
56
Issue
3
Year of publication
1996
Pages
207 - 212
Database
ISI
SICI code
0038-092X(1996)56:3<207:MOTHPF>2.0.ZU;2-S
Abstract
Images taken by geostationary satellites may be used to estimate solar irradiance fluxes at the earth's surface. The Heliosat method is a wi dely applied procedure for this task. It is based on the empirical cor relation between a satellite derived cloud index and the irradiance at the ground. Modifications to this procedure that may reduce the tempo ral variability of the correlation are presented. The modified method may open the way to the use of a generic relation of cloud index and g lobal irradiance.