Light pollution is a serious global issue, adversely impacting human health, the environment, and wildlife, while also leading to unnecessary energy consumption. In this master's thesis the pollution levels of major urban centers in Slovenia and its surrounding areas were examined. Annual data from the period 2013–2022 were analyzed for six areas (Ljubljana, Maribor, Celje, Novo mesto, Kranj, and Koper with Trieste). Special attention was given to the period of coronavirus pandemic in 2020, by comparing the data, for the city of Ljubljana, with those from the years before and after the pandemic. For 2022, the lowest, average, and highest levels of pollution were presented for the entire national territory and its surroundings. Satellite images from the S-NPP and NOAA-20 satellites were utilized, obtained through the Google Earth Engine platform. Image processing involved IDW interpolation and the KDE method, with the final results presented through Heat maps and Time series. The results show a gradual increase in light pollution, consistent with global trends. A similar conclusion was made regarding the pandemic, during which light pollution levels in Ljubljana were lower compared to the year preceding and following that period.
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