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The total night light changes from 1985 to 2020.

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posted on 2023-11-16, 18:39 authored by Guangsheng Wang, Zihao Duan, Tong Yu, Zhicheng Shen, Yajing Zhang

The annual total night light (TNL) was calculated from 1985 to 2020. In densely populated areas, social and economic activities are more active, and nighttime brightness values are higher. When the population density was sparse, the brightness value at night was lower. Nightlight images over the period of 1985–2020 were derived from the Prolonged Artificial Nighttime Light Dataset (PANDA). The spatial resolution of the PANDA was 1 km.

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