A combination image distributed by the European Space Agency (ESA) on March 27, 2020, shows the average nitrogen dioxide concentrations from air pollution across Italy in March, 2019 (L), and from March 14-25, 2020, as mapped by the Copernicus Sentinel-5P satellite, a reduction that the ESA says is due to the strict quarantine measures during the coronavirus disease (COVID-19) outbreak. ESA/Handout via Reuters
LONDON (Reuters) - Air pollution from nitrogen dioxide has fallen by an estimated 40% in three European cities, according to new satellite data released by the European Space Agency (ESA), coinciding with a widespread lockdown to curb the spread of the coronavirus.
The space agency's Copernicus Sentinel-5P satellite mission on Friday released three composite images showing nitrogen dioxide concentrations in the period March 14-25 over France, Spain and Italy, compared to the monthly average of concentrations from 2019.
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