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  Variation of outdoor illumination as a function of solar elevation and light pollution

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, 1-14. doi:10.1038/srep26756.

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https://www.nature.com/articles/srep26756.pdf (Publisher version)
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Spitschan, M1, Author           
Aguirre, GK, Author
Brainard, DH, Author
Sweeney, AM, Author
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1External Organizations, ou_persistent22              

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 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.

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 Dates: 2016-06
 Publication Status: Published online
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 Identifiers: DOI: 10.1038/srep26756
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Title: Scientific Reports
  Abbreviation : Sci. Rep.
Source Genre: Journal
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Publ. Info: London, UK : Nature Publishing Group
Pages: - Volume / Issue: 6 Sequence Number: - Start / End Page: 1 - 14 Identifier: ISSN: 2045-2322
CoNE: https://pure.mpg.de/cone/journals/resource/2045-2322