Dependence on cloudiness and solar altitude of global solar radiation received at 315 and 545 nm on horizontal surfaces

Alfonso Soler and Rosa Ramirez

Renewable Energy, 1995, vol. 6, issue 4, 407-412

Abstract: The study of monthly mean half hourly values of global radiation received at 315 (u.v.) and 545 nm (green) on a horizontal surface at Uccle (Belgium) in 1980 for clear (half hourly sunshine fraction σ = 1) and overcast (σ = 0) skies shows that for any solar altitude, global radiation received at 315 nm is less absorbed by clouds than radiation received at 545 nm. An explanation is given of the dependence on solar altitude for clear skies of the ratio between monthly mean half hourly values of global radiation received at both wavelengths, based on considerations concerning the direct and diffuse components.

Date: 1995
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:6:y:1995:i:4:p:407-412

DOI: 10.1016/0960-1481(94)00074-G

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