Summary

This technical summary analyzes global data derived from the VIIRS satellite, highlighting patterns in nighttime urban light pollution across 2012 to 2019. By comparing data collected annually, researchers discovered consistent fluctuations in the intensity of artificial sky brightness in major metropolitan areas. The study emphasizes how urbanization has altered the visual environment, with specific regions showing significant increases in luminance compared to historical averages. This research underscores the need for precise environmental monitoring to mitigate light pollution impacts in high-trace regions.

Light pollution metrics are categorized into distinct phases of the night, where the intensity of celestial illumination shifts dramatically. The data reveals a complex interplay between natural astronomical phenomena and human-induced illumination, affecting the visibility of night skies globally.

Title

Global Light Pollution Map | Real-time query of light pollution & China’s dark sky environment level - Tianwentong

Description

Professional-grade light pollution map, real-time display of Portal Dark Sky Classification Level, China Dark Sky Environment Level, and accurate SQM values. A must-have tool for astronomy enthusiasts, it can quickly locate the best stargazing locations, support light pollution inquiries in China, and assist in starry sky photography planning.

Keywords

christopher, https, quality, supplement, world, atlas, night, brightness, data, services, meter, nasa, annual, time, series, nighttime, lights

NS Lookup

A 43.242.73.178

Dates

Created 2026-04-14

Updated 2026-04-21

Summarized 2026-04-21