A parameterisation of vertical profile of solar irradiance for correcting solar fluxes for changes in terrain elevation

Armel Oumbe (1) , Lucien Wald (2)

1 CEP - Centre Énergétique et Procédés
2 CEP/Sophia

This paper deals with the modelling of vertical profile of solar irradiance for correcting solar radiation data. An approximation of the influence of the terrain elevation on all-skies radiation and a parameterisation of vertical profile on clear-skies radiation are proposed. This parameterisation, called double-z fitting function, is validated using two radiative transfer models. The main applications of this work are: computing clear-sky irradiances from satellite images, extrapolation of irradiances from one site to another of different altitude and correction of databases derived from satellite images.

Domaines: Sciences de la Terre; Interfaces continentales, environnement; Milieux et Changements globaux; Sciences de l'environnement

Armel Oumbe, Lucien Wald. A parameterisation of vertical profile of solar irradiance for correcting solar fluxes for changes in terrain elevation. Earth Observation and Water Cycle Science Conference, Nov 2009, Frascati, Italy. pp.S05. ⟨hal-00470155⟩