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Ground level ozone: Explorer

May 03, 2012

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Emissions of ozone precursors (CSI 002) - Assessment published Dec 2011

Dec 21, 2011

Emissions of the main ground-level ozone precursor pollutants have decreased across the EEA-32 region between 1990 and 2009; nitrogen oxides (NO X ) by 41%, non-methane volatile organic compounds (NMVOCs) by 51%, carbon monoxide (CO) by 61%, and methane (CH 4 ) by 27%. This decrease has been achieved mainly as a result of the introduction of catalytic converters for vehicles. These changes have significantly reduced emissions of NO X and CO from the road transport sector, the main source of ozone precursor emissions. The EU-27 is still some way from meeting its 2010 target to reduce emissions of NO X , one of the two ozone precursors (NO X and NMVOC) for which emission limits exist under the EU’s National Emissions Ceiling Directive (NECD). Whilst total NMVOC emissions in the EU-27 were below the NECD limit in 2009, a number of individual Member States anticipate missing their ceilings for one or either of these two pollutants. Of the three non-EU countries having emission ceilings for 2010 set under the UNECE/CLRTAP Gothenburg protocol (Liechtenstein, Norway and Switzerland), all three countries reported NMVOC emissions in 2009 that were lower than their respective 2010 ceilings. However both Liechtenstein and Norway reported NO X emissions in 2009 that were substantially higher than their respective 2010 ceilings.

Non-methane volatile organic compounds (NMVOC) emissions (APE 004) (APE 004) - Assessment published Dec 2011

Dec 21, 2011

EEA-32 emissions of non-methane volatile organic compounds (NMVOCs) have decreased by 51% since 1990. In 2009, the most significant sources of NMVOC emissions were ‘Solvent and product use’ (36%) (comprising activities such as paint application, dry-cleaning and other use of solvents), followed by ‘Commercial, institutional and households’ (15%). The decline in emissions since 1990 has primarily been due to reductions achieved in the road transport sector due to the introduction of vehicle catalytic converters and carbon canisters on petrol cars, for evaporative emission control driven by tighter vehicle emission standards, combined with limits on the maximum volatility of petrol that can be sold in EU Member States, as specified in fuel quality directives. The reductions in NMVOC emissions have been enhanced by the switching from petrol to diesel cars in some EU countries, and changes in the ‘Solvents and product use' sector (a result of the introduction of legislative measures limiting for example the use and emissions of solvents). The EU-27 Member States have, in general, made good progress towards reducing emissions in line with their obligations under the National Emission Ceilings Directive (NECD). Twenty four Member States (Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Estonia, Finland, France, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Sweden and the United Kingdom) have already reduced their national NMVOC emissions below the level of the emission ceilings set in the NECD. However, two Member States (Denmark and Germany) reported 2009 emissions significantly above their respective emission ceilings and therefore require significant reductions to have been made in 2010 in order to comply with the NECD. Emissions in 2009 for the three non-EU countries having emission ceilings set under the UNECE/CLRTAP Gothenburg protocol (Liechtenstein, Norway and Switzerland) were all well below their respective ceilings. Environmental context: Non-methane volatile organic compounds (NMVOCs) are a collection of organic compounds that differ widely in their chemical composition but display similar behaviour in the atmosphere. NMVOCs are emitted into the atmosphere from a large number of sources including combustion activities, solvent use and production processes. NMVOCs contribute to the formation of ground level (tropospheric) ozone, and certain NMVOC species such as benzene and 1,3 butadiene are hazardous to human health. Quantifying the emissions of total NMVOCs provides an indicator of the emissions of the most hazardous NMVOCs.

Nitrogen oxides (NOx) emissions (APE 002) (APE 002) - Assessment published Dec 2011

Dec 21, 2011

EEA-32 emissions of nitrogen oxides (NO X ) have decreased by 41% between 1990 and 2009. In 2009, the most significant sources of NO X emissions were the ‘Road transport’ sector (38%), ‘Energy production and distribution’ sector (22%), ‘Commercial, institutional and households’ sector (15%) and the ‘Energy use in industry’ sector (13%). The largest reduction of emissions in absolute terms since 1990 has occurred in the road transport sector. These reductions have been achieved despite the general increase in activity within this sector since the early 1990s and have primarily been achieved as a result of fitting three-way catalysts to petrol fuelled vehicles. However, ambient urban concentrations of NO 2 in EU-27 countries in recent years have not fallen by as much as reported emissions. Since 2002, NO 2 average annual mean concentrations at urban background sites have fallen by just 9 %, as indicated in CSI 004, during which time the reported NO X emissions for the EU-27 decreased by 23%. This discrepancy may be a result of a general under-estimation of the effect of catalytic degradation in newer cars, in which case a number of member states’ NO X emissions could be significantly higher than currently calculated. In the electricity/energy production sector reductions have also occurred, in these instances as a result of measures such as the introduction of combustion modification technologies (such as use of low NO X burners), implementation of flue-gas abatement techniques (e.g NO X scrubbers and selective (SCR) and non-selective (SNCR) catalytic reduction techniques) and fuel-switching from coal to gas. The National Emission Ceilings Directive (NECD) specifies NO X emission ceilings for Member States that must be met by 2010. In general, the newer EU Member States have made substantially better progress towards meeting their respective NO X ceilings than the older Member States of the EU-15. Ten of the twelve post-2004 Member States had already reduced their 2009 emissions beyond what is required under the NECD, with the remaining two reporting NO X emissions less than 2% above the NECD target . In contrast, only four of the EU-15 Member States reported emissions for 2009 within their respective national ceilings. Thus many Member States required a significant reduction of NO X emissions to have been made in 2010 if they are to meet their obligations under the NECD. Of the three non-EU countries having emission ceilings set under the UNECE/CLRTAP Gothenburg protocol (Liechtenstein, Norway and Switzerland) only for Switzerland were emissions in 2009 below the level of their 2010 ceiling. Environmental context: NO X contributes to acid deposition and eutrophication. The subsequent impacts of acid deposition can be significant, including adverse effects on aquatic ecosystems in rivers and lakes and damage to forests, crops and other vegetation. Eutrophication can lead to severe reductions in water quality with subsequent impacts including decreased biodiversity, changes in species composition and dominance, and toxicity effects. It is NO 2 that is associated with adverse affects on human health, as at high concentrations it can cause inflammation of the airways. NO 2 also contributes to the formation of secondary particulate aerosols and tropospheric ozone in the atmosphere - both are important air pollutants due to their adverse impacts on human health.

Emissions of ozone precursors (CSI 002) - Assessment published Dec 2011 Emissions of the main ground-level ozone precursor pollutants have decreased across the EEA-32 region between 1990 and 2009; nitrogen oxides (NO X ) by 41%, non-methane volatile organic compounds (NMVOCs) by 51%, carbon monoxide (CO) by 61%, and methane (CH 4 ) by 27%. This decrease has been achieved mainly as a result of the introduction of catalytic converters for vehicles. These changes have significantly reduced emissions of NO X and CO from the road transport sector, the main source of ozone precursor emissions. The EU-27 is still some way from meeting its 2010 target to reduce emissions of NO X , one of the two ozone precursors (NO X and NMVOC) for which emission limits exist under the EU’s National Emissions Ceiling Directive (NECD). Whilst total NMVOC emissions in the EU-27 were below the NECD limit in 2009, a number of individual Member States anticipate missing their ceilings for one or either of these two pollutants. Of the three non-EU countries having emission ceilings for 2010 set under the UNECE/CLRTAP Gothenburg protocol (Liechtenstein, Norway and Switzerland), all three countries reported NMVOC emissions in 2009 that were lower than their respective 2010 ceilings. However both Liechtenstein and Norway reported NO X emissions in 2009 that were substantially higher than their respective 2010 ceilings.

Non-methane volatile organic compounds (NMVOC) emissions (APE 004) - Assessment published Dec 2011 EEA-32 emissions of non-methane volatile organic compounds (NMVOCs) have decreased by 51% since 1990. In 2009, the most significant sources of NMVOC emissions were ‘Solvent and product use’ (36%) (comprising activities such as paint application, dry-cleaning and other use of solvents), followed by ‘Commercial, institutional and households’ (15%). The decline in emissions since 1990 has primarily been due to reductions achieved in the road transport sector due to the introduction of vehicle catalytic converters and carbon canisters on petrol cars, for evaporative emission control driven by tighter vehicle emission standards, combined with limits on the maximum volatility of petrol that can be sold in EU Member States, as specified in fuel quality directives. The reductions in NMVOC emissions have been enhanced by the switching from petrol to diesel cars in some EU countries, and changes in the ‘Solvents and product use' sector (a result of the introduction of legislative measures limiting for example the use and emissions of solvents). The EU-27 Member States have, in general, made good progress towards reducing emissions in line with their obligations under the National Emission Ceilings Directive (NECD). Twenty four Member States (Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Estonia, Finland, France, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Sweden and the United Kingdom) have already reduced their national NMVOC emissions below the level of the emission ceilings set in the NECD. However, two Member States (Denmark and Germany) reported 2009 emissions significantly above their respective emission ceilings and therefore require significant reductions to have been made in 2010 in order to comply with the NECD. Emissions in 2009 for the three non-EU countries having emission ceilings set under the UNECE/CLRTAP Gothenburg protocol (Liechtenstein, Norway and Switzerland) were all well below their respective ceilings. Environmental context: Non-methane volatile organic compounds (NMVOCs) are a collection of organic compounds that differ widely in their chemical composition but display similar behaviour in the atmosphere. NMVOCs are emitted into the atmosphere from a large number of sources including combustion activities, solvent use and production processes. NMVOCs contribute to the formation of ground level (tropospheric) ozone, and certain NMVOC species such as benzene and 1,3 butadiene are hazardous to human health. Quantifying the emissions of total NMVOCs provides an indicator of the emissions of the most hazardous NMVOCs.

Nitrogen oxides (NOx) emissions (APE 002) - Assessment published Dec 2011 EEA-32 emissions of nitrogen oxides (NO X ) have decreased by 41% between 1990 and 2009. In 2009, the most significant sources of NO X emissions were the ‘Road transport’ sector (38%), ‘Energy production and distribution’ sector (22%), ‘Commercial, institutional and households’ sector (15%) and the ‘Energy use in industry’ sector (13%). The largest reduction of emissions in absolute terms since 1990 has occurred in the road transport sector. These reductions have been achieved despite the general increase in activity within this sector since the early 1990s and have primarily been achieved as a result of fitting three-way catalysts to petrol fuelled vehicles. However, ambient urban concentrations of NO 2 in EU-27 countries in recent years have not fallen by as much as reported emissions. Since 2002, NO 2 average annual mean concentrations at urban background sites have fallen by just 9 %, as indicated in CSI 004, during which time the reported NO X emissions for the EU-27 decreased by 23%. This discrepancy may be a result of a general under-estimation of the effect of catalytic degradation in newer cars, in which case a number of member states’ NO X emissions could be significantly higher than currently calculated. In the electricity/energy production sector reductions have also occurred, in these instances as a result of measures such as the introduction of combustion modification technologies (such as use of low NO X burners), implementation of flue-gas abatement techniques (e.g NO X scrubbers and selective (SCR) and non-selective (SNCR) catalytic reduction techniques) and fuel-switching from coal to gas. The National Emission Ceilings Directive (NECD) specifies NO X emission ceilings for Member States that must be met by 2010. In general, the newer EU Member States have made substantially better progress towards meeting their respective NO X ceilings than the older Member States of the EU-15. Ten of the twelve post-2004 Member States had already reduced their 2009 emissions beyond what is required under the NECD, with the remaining two reporting NO X emissions less than 2% above the NECD target . In contrast, only four of the EU-15 Member States reported emissions for 2009 within their respective national ceilings. Thus many Member States required a significant reduction of NO X emissions to have been made in 2010 if they are to meet their obligations under the NECD. Of the three non-EU countries having emission ceilings set under the UNECE/CLRTAP Gothenburg protocol (Liechtenstein, Norway and Switzerland) only for Switzerland were emissions in 2009 below the level of their 2010 ceiling. Environmental context: NO X contributes to acid deposition and eutrophication. The subsequent impacts of acid deposition can be significant, including adverse effects on aquatic ecosystems in rivers and lakes and damage to forests, crops and other vegetation. Eutrophication can lead to severe reductions in water quality with subsequent impacts including decreased biodiversity, changes in species composition and dominance, and toxicity effects. It is NO 2 that is associated with adverse affects on human health, as at high concentrations it can cause inflammation of the airways. NO 2 also contributes to the formation of secondary particulate aerosols and tropospheric ozone in the atmosphere - both are important air pollutants due to their adverse impacts on human health.

Change (%) in PAH emissions 1990-2009 (EEA member countries) The reported change in polycyclic aromatic hydrocarbons (PAH) emissions for each country, 1990-2009.

Change in cadmium, mercury and lead emissions for each sector between 1990 and 2009 (EEA member countries) Percentage change in cadmium (Cd), mercury (Hg) and lead (Pb) emissions for each sector between 1990 and 2009.

Sector split of emissions of selected heavy metals (EEA member countries) The contribution made by different sectors to emissions of cadmium - Cd; mercury - Hg; and lead - Pb.

Estimated years of life lost (YOLL) in reference year 2005 attributable to long-term PM2.5 exposure Health impact caused by expsore to PM2.5

Suitability of the establishment of the tiger mosquito under the minimum climate change scenario, long term (2030) Projected suitability of the establishment of the tiger mosquito

Years of life lost (YOLL) in EEA countries due to PM2.5 pollution, 2005 Health impact caused by exposure top PM2.5.

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Emissions of ozone precursors (CSI 002) - Assessment published Dec 2011

Emissions of the main ground-level ozone precursor pollutants have decreased across the EEA-32 region between 1990 and 2009; nitrogen oxides (NO X ) by 41%, non-methane volatile organic compounds ...