Influence of COVID-19 on night-time lights in Czechia

Daniel Pavlačka, Pavel Vyvlečka, Radek Barvíř, Oldřich Rypl and Jaroslav Burian

Journal of Maps, 2023, vol. 19, issue 1, 2235381

Abstract: Night-Time Light (NTL) satellite imagery is widely recognized and valued as a powerful tool for spatial analysis and research. Despite its global popularity, there is absence of similar studies dealing with NTL intensity in Czechia. Using VIIRS/DNB data, our study focused on analyzing the changes in night-time light intensity before and during the coronavirus restrictions. These restrictions had a substantial impact on social and economic life, particularly during the peak of pandemic, affecting not only Czechia but also other regions worldwide. A mosaic of the study area was prepared, followed by the aggregation of the original raster data to municipalities with extended power (MEPs) and calculation of the average light index (ALI). The resulting typology made it possible to identify regional differences in NTL intensity. The main hypothesis was confirmed, it was observed that the ALIexhibited a decrease of 18% in 2020, whereas in 2021, the decline averaged at 9%.

Date: 2023
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DOI: 10.1080/17445647.2023.2235381

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