NASA
Human Fingerprint on Global Air Quality
Using new, high-resolution global satellite maps of air quality
indicators, NASA scientists tracked air pollution trends over the last
decade in various regions and 195 cities around the globe. The United
States, Europe and Japan have improved air quality thanks to emission
control regulations, while China, India and the Middle East, with their
fast-growing economies and expanding industry, have seen more air
pollution.
Scientist Bryan Duncan and his team examined observations made from 2005 to 2014 by the Ozone Monitoring Instrument aboard NASA's Aura satellite. One of the atmospheric gases the instrument detects is nitrogen dioxide, a yellow-brown gas that is a common emission from cars, power plants and industrial activity. Nitrogen dioxide can quickly transform into ground-level ozone, a major respiratory pollutant in urban smog. Nitrogen dioxide hotspots, used as an indicator of general air quality, occur over most major cities in developed and developing nations.
This video is public domain and can be downloaded at: http://svs.gsfc.nasa.gov/goto?12096
Scientist Bryan Duncan and his team examined observations made from 2005 to 2014 by the Ozone Monitoring Instrument aboard NASA's Aura satellite. One of the atmospheric gases the instrument detects is nitrogen dioxide, a yellow-brown gas that is a common emission from cars, power plants and industrial activity. Nitrogen dioxide can quickly transform into ground-level ozone, a major respiratory pollutant in urban smog. Nitrogen dioxide hotspots, used as an indicator of general air quality, occur over most major cities in developed and developing nations.
This video is public domain and can be downloaded at: http://svs.gsfc.nasa.gov/goto?12096
Air pollution in the world
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