NASA satellite images show a dramatic fall in pollution over China that is “partly related” to the economic slowdown due to the coronavirus outbreak, the space agency said. The reduction in nitrogen dioxide (NO2) pollution was first noticed near Wuhan, the epicentre of the outbreak, but eventually spread across China, according to NASA scientists who examined data collected by their and European Space Agency satellites.
Maps comparing NO2 concentrations showed a marked decline between January 1-20, before a sweeping quarantine was imposed on Wuhan and other cities, and February 10-25. “There is evidence that the change is at least partly related to the economic slowdown following the outbreak of coronavirus,” NASA’s Earth Observatory said in a statement.
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