Indexed trends in air quality

Figure Created 12 Jan 2011 Published 12 Jan 2011 Last modified 13 Jun 2013
"Annual mean concentrations of air pollutants in urban areas" Indexed trend in annual mean urban air quality over the period 1997-2008 (reference year 1997). All urban and suburban background stations operational (that is at least reporting over 9 years with a yearly coverage of at least 274 days) during the period 1997-2008 are included. A general, Europe-wide averaged picture is shown, with a bias towards regions with high station density.

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European Environment Agency (EEA)
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