Changes (%) in emissions of ozone precursors by source category, 1990-2006, EU-27 (weighted by tropospheric ozone formation potential)
Created 24 Mar 2009
Published 24 Mar 2009
Last modified 29 Nov 2012, 11:34 AM
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The graph above shows the emissions of ozone precursors (methane CH4; carbon monoxide CO; non-methane volatile organic compounds NMVOCs; and nitrogen oxides NOx) each weighted by a factor prior to aggregation to represent their respective tropospheric ozone formation potential (TOFP)
The TOFP factors are: NOx 1.22, NMVOC 1, CO 0.11 and CH4 0.014 (de Leeuw 2002). Results are expressed in NMVOC equivalents (kilotonnes - kt).
For references, please go to www.eea.europa.eu/soer or scan the QR code.
This briefing is part of the EEA's report
The European Environment - State and Outlook 2015. The EEA is an official agency of the EU, tasked with providing information on Europe's environment.
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