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Satellite monitoring reveals significant improvement in air pollution in Italy after nationwide lockdown.

2020-05-15

Due to the impact of the novel coronavirus pneumonia (Wuhan pneumonia, COVID-19), China recently implemented provincial lockdowns, restricting people's movement and suspending industrial activities, which unexpectedly led to a significant reduction in China's carbon emissions. A similar situation has occurred in Italy. As the government announced a nationwide lockdown, many people were forced to stay at home, resulting in a significant reduction in air pollution over the Italian peninsula, especially in the northern regions of Italy, which were severely affected by the epidemic. According to multiple foreign media reports, the European Space Agency's (ESA) Sentinel-5P satellite, which monitors air pollution, has found a significant reduction in air pollution, particularly nitrogen dioxide emissions, across Italy, especially in the northern part of the peninsula. Claus Zehner, a member of the ESA Sentinel-5P team, pointed out that the data may vary slightly due to cloud cover and weather changes, "but we are very confident that the reduction in emissions is closely related to Italy's lockdown, given the significant reduction in traffic and industrial activity." ESA specifically created data on nitrogen dioxide emissions over Italy from January 1, 2019 to March 11, 2020. It clearly shows a sharp decrease in nitrogen dioxide levels in the Po River basin in northern Italy, a region with a large population and dense industrial population. Source: Environmental Information Center, Liberty Times

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