Davila Alotto, F.Linhart, F.Scartezzini, J.-L.2009-12-022009-12-022009-12-022009https://infoscience.epfl.ch/handle/20.500.14299/44565The purpose of this work is the definition of a representative sky for the Geneva Lake Region (south-west Switzerland). A representative sky is a theoretical blended sky based on the relative occurrence of a subset of the 15 standard general skies suggested in 2003 by the Commission Internationale de l’Eclairage (CIE) [1]. By employing Tregenza’s method [4] and the Swiss Norm 150 911 [5], a reduced set of CIE standard skies (and their relative frequency of occurrence), named the Geneva Lake Region Representative Sky (GLRRS), is proposed. In addition, by means of a GLRRS-based Virtual Sky Dome (VSD) and the lighting software Photopia 3.0, the behaviour of three different kinds of mirror lightducts is simulated for the Geneva Lake Region.Daylighting System PerformanceSky luminanceMirror Lightductstext::conference output::conference proceedings::conference paper