This image released by NASA shows the average concentration of atmospheric nitrogen dioxide in March of 2015-19. (left), compared to March of 2020. (NASA/NASA's Scientific Visualization Studio) NASA satellite data has shown a 30 percent reduction in atmospheric nitrogen dioxide pollution in the northeastern U.S.
during the coronavirus lockdown. The average concentrations of atmospheric nitrogen dioxide were measured by the Ozone Monitoring Instrument on NASA’s Aura satellite during March and compared to the same period in prior years.
Nitrogen dioxide, which is mainly emitted from burning fossil fuels and the generation of electricity, is a good indicator of human activity, according to the space agency.