NASA / GODDARD SPACE FLIGHT CENTER SCIENTIFIC VISUALIZATION STUDIO / SCIENCE PHOTO LIBRARY NASA / GODDARD SPACE FLIGHT CENTER SCIENTIFIC VISUALIZATION STUDIO / SCIENCE PHOTO LIBRARY
European nitrogen dioxide trend 2005-2014. Satellite data map of Europe showing the trend between 2005 and 2014 in levels of the pollutant gas nitrogen dioxide (NO2), produced by cars, power stations and industrial sites. Chemical reactions involving NO2 can produce the respiratory pollutant ozone, contributing to urban smog. The changes are colour-coded, with decreases shown in blue, and increases shown in orange. The data is from the Ozone Monitoring Instrument aboard NASA's Aura satellite.
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