Parent Layer:
Threats
Name: Light Radiance at Night
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Description: Light radiance from electric lighting acquired from nighttime satellite data between June 2014 and May 2015. Light pollution can affect the behaviors of photosensitive animals, such as sea turtles and corals. Visible Infrared Imaging Radiometer Suite (VIIRS) monthly nightlight composites were downloaded from http://ngdc.noaa.gov/eog/viirs/download_monthly.html and light radiance between June 2014 and May 2015 were used to quantify light pollution. This monthly series provides a full annual cycle of light activity on the island. We used the data configuration that excludes any values impacted by stray light. Monthly composites were averaged to produce a single yearlong composite. The values were re-scaled to the maximum value in water. Reviewers vetted the yearlong composite and deemed it corresponded well to their recollection of light levels on visited beaches.
Copyright Text: NOAA/NOS/NCCOS/CCMA/Biogeography Branch
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