This web application lets you interactively experiment with the latest Perez All-Weather Sky model, which is the basis for the CIE Standard General Sky methodology described in both ISO 15469:2004(E) and CIE S 011/E:2003 . This is basically a mathematical model for calculating representative spatial distributions of daylight over the sky dome that can functionally simulate a range of different weather conditions. Figure 2 shows some example real-world sky conditions and their modelled daylight distributions.
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Figure 1 : A screenshot of the CIE Sky app running within a web browser. Launch app in new tab... This web application lets you interactively experiment with the latest Perez All-Weather Sky model, which is the basis for the CIE Standard General Sky methodology described in both ISO 15469:2004(E) and CIE S 011/E:2003 . This is basically a mathematical model for calculating representative spatial…

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