Image:NO2 pollution europe hires.jpg

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Nitrogen dioxide pollution levels in Europe

Credit: University of Heidelberg

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NO₂ levels over Europe

A detail from a global image shows the European mean tropospheric nitrogen dioxide (NO₂) vertical column density (VCD) between January 2003 and June 2004, as measured by the SCIAMACHY instrument on ESA's Envisat. The scale is 10¹⁵ molecules/cm⁻². Image produced by S. Beirle, U. Platt and T. Wagner of the University of Heidelberg's Institute for Environmental Physics.

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• http://esamultimedia.esa.int/images/EarthObservation/pollution_europe_hires.jpg

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