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Spitschan, M., Aguirre, G., Brainard, D. & Sweeney, A. (2016) Variation of outdoor illumination as a function of solar elevation and light pollution. Scientific Reports, 6. 
Added by: Sarina (01 Jan 2021 08:45:13 UTC)   
Resource type: Journal Article
DOI: 10.1038/srep26756
BibTeX citation key: Spitschan2016
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Categories: Englisch = English
Keywords: Sonne = Sun
Creators: Aguirre, Brainard, Spitschan, Sweeney
Collection: Scientific Reports
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Popularity index: 21.75%
Abstract
The illumination of the environment undergoes both intensity and spectral changes during the 24 h cycle of a day. Daylight spectral power distributions are well described by low-dimensional models such as the CIE (Commission Internationale de l’Éclairage) daylight model, but the performance of this model in non-daylight regimes is not characterised. We measured downwelling spectral irradiance across multiple days in two locations in North America: One rural location (Cherry Springs State Park, PA) with minimal anthropogenic light sources, and one city location (Philadelphia, PA). We characterise the spectral, intensity and colour changes and extend the existing CIE model for daylight to capture twilight components and the spectrum of the night sky.
Added by: Sarina  Last edited by: Sarina
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