Girl Planting seeds

Invisible air polluting gases revealed by satellite imagery

The Copernicus Sentinel-5P satellite, operational since early 2018, is starting to return high resolution maps of air polluting gases that are invisible to the human eye. Amongst the first images released by mission scientists were plumes of nitrogen dioxide flowing from power plants as well as traffic-choked cities in Europe.  Sentinel-5P, the first Copernicus satellite dedicated to monitoring atmospheric chemistry, carries a single instrument called Tropomi. The Tropomi is a spectrometer that observes the reflected sunlight coming up off the Earth and analyzes its many different colours.  Read more...



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