Influence of public emergencies and spatio-temporal dynamic changes based on nighttime light data from NPP-VIIRS
Nighttime light data has become an important indicator for reflecting human activities,including social economy and energy consumption. Due to the lack of regionalized research on the dynamic monitoring of the influence of public emergencies on the country,this study used the nighttime light data collected by the national polar-orbiting partnership-visible infrared imaging radiometer suite (NPP-VIIRS) from January to June 2022 to study the spatio-temporal changes in nighttime lights under the influence of the COVID-19 pandemic. The study revealed and analyzed the spatio-temporal dynamic changes under the influence of the pandemic and used population flow data for auxiliary validation. The results show that at the national spatial scale,nighttime light intensity is negatively correlated with the development of the pandemic,and the feasibility and accuracy of monitoring the spatio-temporal dynamic changes of the nighttime light under the influence of the pandemic throughout the country by using nighttime light data collected by NPP-VIIRS were validated. The findings of this study can provide a reference for relevant departments to respond to possible public safety emergencies in the future.
万方数据
维普
