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Energy-related emissions of acidifying substances: Emissions of SO 2 and NOx (also NH 3 where applicable) in 1000 tonnes.
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Energy-related emissions of acidifying substances (ENER 006) - Assessment published Apr 2012: Energy-related emissions account for only 2% of NH 3 emissions but 96% of NO x and 94% of SO 2 emissions in the EEA-32 in 2009. They fell by 17%, 13% and 21% respectively between 2005 and 2009 in EEA-32 countries. Since 1990, these energy related emissions declined by 40% and 78% for NO x and SO 2 respectively but increased by 88% for NH 3 in the EU-27 and declined by 37% (NO x ) and 74% (SO 2 ) and increased by 92% (NH 3 ) in EEA-32 member countries. However as noted earlier the percentage of energy related NH 3 emissions are insignificant compare do the non-energy related NH 3 emissions. Most of the total reduction in pollutants contributing to acid deposition since 1990 is accounted for by lower SO 2 emissions from the energy-producing sector and lower NO x emissions from the transport sector. The EU-27 is broadly on track to meet its overall targets set under the NEC Directive (NECD) [1] , however further reductions are needed to improve remaining local and transboundary air pollution issues, and for ensuring that individual countries meet emissions ceiling targets under the NECD and the UNECE Gothenburg Protocol. [1] See Pollutant Specific Factsheet NOx
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Changes (%) in energy related emissions of pollutants contributing to acid deposition by source category, 1990-2008, EEA32: The figure shows the emissions of asulphur dioxide SO2, nitrogen oxides NOx and ammonia NH3
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Sectoral shares of acidifying pollutants (SO2, NOx, NH3; energy and non-energy components) of total emissions, EEA-32. Values within the segments indicate the level of emissions (kt) emitted from each sector.: The emissions of acidifying pollutants (sulphur dioxide SO2, nitrogen oxides NOx and ammonia NH3) are each weighted by an acid equivalency factor prior to aggregation to represent their respective acidification potentials. The acid equivalency factors are given by: w(SO2) = 2/64 acid eq/g = 31.25 acid eq/kg, w(NOx) = 1/46 acid eq/g = 21.74 acid eq/kg and w(NH3) = 1/17 acid eq/g = 58.82 acid eq/kg.
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Overall change in emissions of acidifying substances by country, 1990-2007: The graph shows the change in emissions of acidifying pollutants (sulphur dioxide SO2, nitrogen oxides NOx and ammonia NH3) each weighted by an acid equivalency factor prior to aggregation to represent their respective acidification potentials. The acid equivalency factors are given by: w(SO2) = 2/64 acid eq/g = 31.25 acid eq/kg, w(NOx) = 1/46 acid eq/g = 21.74 acid eq/kg and w(NH3) = 1/17 acid eq/g = 58.82 acid eq/kg.
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Changes (%) in emissions of acidifying pollutants by source category, 1990-2007, EEA-27 (weighted by acid equivalency factors): The figure shows the emissions of acidifying pollutants (sulphur dioxide SO2, nitrogen oxides NOx and ammonia NH3) each weighted by an acid equivalency factor prior to aggregation to represent their respective acidification potentials. The acid equivalency factors are given by: w(SO2) = 2/64 acid eq/g = 31.25 acid eq/kg, w(NOx) = 1/46 acid eq/g = 21.74 acid eq/kg and w(NH3) = 1/17 acid eq/g = 58.82 acid eq/kg.
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Changes (%) in energy related emissions of pollutants contributing to acid deposition by source category, 2005-2009, EEA32: The figure shows the emissions of asulphur dioxide SO2, nitrogen oxides NOx and ammonia NH3. Energy combustion’ includes all energy-related emissions.
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Energy-related emissions of acidifying substances: Emissions of SO 2 and NOx (also NH 3 where applicable) in 1000 tonnes.
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Overall change in energy related emissions of SO2 and NOx by country, 1990-2008: Emissions of NH3 have been omitted from the graph. Total emissions of NH3 have significantly increased but only contribute a very small amount to energy related emissions.
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Changes (%) in emissions of acidifying pollutants by source category, 1990-2006, EU-27 (weighted by acid equivalency factors): The figure shows the emissions of acidifying pollutants (sulphur dioxide SO2, nitrogen oxides NOx and ammonia NH3) each weighted by an acid equivalency factor prior to aggregation to represent their respective acidification potentials
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