Light Pollution & Skyglow

Rayleigh Scatter Index (RSI)

introduces this method for estimating the reflectance of the atmosphere.

RSI Data for Sources

has the results of RSI evaluations of different sources, in terms of overall RSI and evaluating the RSI SPD's by photopic, scotopic and melanoptic sensitivity functions.

Roadway Unit Uplight Density (UUD) Calculation Examples

includes information about calculating UUD with references and examples.

Sources, Surfaces and Atmospheric Scatter: The Rayleigh Scatter Index

is the paper submitted to the International Dark-sky Association 2003 Annual Conference in Tuscon, AZ in March. The abstract is here. The Powerpoint presentation is available here.

Unit Uplight Density (UUD)

Uplight

What Blue Skies Tell Us About Light Pollution

is a introduction to the issues of skyglow and particularly evaluation of relative contributions by different light sources.

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