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Nutrients in transitional, coastal and marine waters (CSI 021) - Assessment published Mar 2013
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In 2010, the highest concentrations of oxidized nitrogen were found in the Baltic Sea, in the Gulf of Riga and Kiel Bay, and in Belgian, Dutch and German coastal waters in the Greater North Sea. Reported stations in the Northern Spanish and Croatian coastal waters also showed high concentration levels. The highest orthophosphate concentrations were found in the Baltic Sea, in the Gulf of Riga and Kiel Bay, and in Irish, Belgian, Dutch and German coastal waters in the Greater North Sea. Coastal stations along Northern Spain and Southern France also showed high concentration levels.
Between 1985 and 2010, overall nutrient concentrations have been either stable or decreasing in stations reported to the EEA in the Greater North Sea, Celtic Seas and in the Baltic Sea. However, this decrease has been more pronounced for nitrogen. Assessments for the overall Mediterranean and Black Sea regions were not possible, data only being available for stations in France and Croatia.
For oxidized nitrogen concentrations, 14% of all the reported stations showed decreasing trends, whereas only 2% showed increasing trends. Decreases were most evident in the Baltic Sea (coastal waters of Germany, Denmark, Sweden and Finland, and open waters) and in southern part of the coast of the Greater North Sea. Increasing trends were mainly found in Croatian coastal stations.
For orthophosphate concentrations, 10% of all the reported stations showed a decrease. This was most evident in coastal and open water stations in the Greater North Sea, and in coastal stations in the Baltic Sea. Increasing orthophosphate trends, observed in 6% of the reported stations, were mainly detected in Irish, Danish and Finnish coastal waters (Gulf of Finland and Gulf of Bothnia) and in open waters of the Baltic Proper.
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Nutrients in transitional, coastal and marine waters
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Emissions of ozone precursors (CSI 002) - Assessment published Dec 2012
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Emissions of the main ground-level ozone precursor pollutants have decreased across the EEA-32 region between 1990 and 2010; nitrogen oxides (NO X ) by 42%, non-methane volatile organic compounds (NMVOC) by 53%, carbon monoxide (CO) by 61%, and methane (CH 4 ) by 32%.
This decrease has been achieved mainly as a result of the introduction of catalytic converters for vehicles, which has significantly reduced emissions of NO X and CO from the road transport sector, the main source of ozone precursor emissions.
The EU-27 as a whole has not met 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 NEC Directive (NECD). Whilst total NMVOC emissions in the EU-27 were below the NECD limit in 2010, a number of individual Member States did not meet their ceilings for one or both 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 reported NMVOC emissions in 2010 that were lower than their respective ceilings, however Liechtenstein and Norway reported NO X emissions higher than their ceiling for 2010.
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Emissions of ozone precursors
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Nitrogen oxides (NOx) emissions (APE 002) - Assessment published Dec 2012
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EEA-32 emissions of nitrogen oxides (NO X ) decreased by 42% between 1990 and 2010. In 2010, the most significant sources of NO X emissions were the 'Road transport' (41%), 'Energy production and distribution' (22%) and the 'Commercial, institutional and households' and 'Energy use in industry' (both 13%) sectors.
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 NO2 in EU-27 countries in recent years have not fallen by as much as reported emissions. From 2001 to 2010, NO2 annual mean concentrations at urban background sites fell by just 10.6% on average (CSI004 - Fig 5) during which time the reported NO X emissions for the EU-27 decreased by 24.9%. The disparity between trends in NO X emissions and ambient NO2 concentration is due in part to increased penetration of diesel vehicles, and the ‘real-world’ emission performance of modern diesel vehicles not showing the improvements that were indicated by the test cycle emission factors used for emission inventories. It is also due to the increased proportion of NO X emitted directly as NO2 from the exhaust of more modern diesel vehicles which use catalyst systems for controlling emissions of other pollutants. As a result of this difference, 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 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 catalytic and non-catalytic reduction techniques, i.e. SCR and SNCR) and fuel-switching from coal to gas.
The National Emission Ceilings Directive (NECD) specifies NO X emission ceilings for Member States that must have been 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. Eleven of the twelve post-2004 Member States had reduced their 2010 emissions beyond what is required under the NECD [1] , with the remaining one reporting NO X emissions just 2% above the NECD target. In contrast, only four of the EU-15 Member States reported emissions for 2010 within their respective national ceilings. Of the three non-EU countries having emission ceilings set under the UNECE/CLRTAP Gothenburg protocol (Liechtenstein, Norway and Switzerland), only Switzerland reported 2010 emissions below the level of their 2010 ceiling.
Environmental context: NO X contributes to acid deposition and eutrophication of soil and water. 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. NO2 is associated with adverse effects on human health, as at high concentrations it can cause inflammation of the airways and reduced lung function, increasing susceptibility to respiratory infection. It also contributes to the formation of secondary particulate aerosols and tropospheric ozone in the atmosphere, both of which are important air pollutants due to their adverse impacts on human health and other climate effects.
[1] Emissions data reported by EU member states under NECD is used for comparison with NECD ceilings, and data reported under CLRTAP is used for all other calculations unless otherwise stated.
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Nitrogen oxides (NOx) emissions
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Sector share of nitrogen oxides emissions (EEA member countries)
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The contribution made by different sectors to emissions of nitrogen oxides in 2010.
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Distance-to-target for EEA member countries
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The distance-to-target indicator shows how current emissions compare to a linear emission reduction 'target-path' between 2010 emission levels and 2020 Gothenburg emission ceilings for each country. Negative percentage values indicate the current emissions in a country are below the linear target path; positive values show that current emission lie above a linear target path to 2020.
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Emission trends of nitrogen oxides (EEA member countries, EU-27 Member States)
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This chart shows past emission trends of nitrogen oxides in the EEA-32 and EU-27 group of countries. In addition - for the EU-27 - the 2010 NECD and 2020 Gothenburg target paths and emission ceilings are shown.
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Emissions of acidifying substances (CSI 001) - Assessment published Dec 2012
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Emissions of the acidifying pollutants, nitrogen oxides (NO X ), sulphur oxides (SO X ) and ammonia (NH 3 ), have decreased significantly in most of the individual EEA member countries between 1990 and 2010. Emissions of SO X have decreased by 75%, NO X by 42% and NH 3 emissions by 28% since 1990 within the EEA-32.
Data reported under the NECD indicates that the EU-27 as a whole has met its overall target to reduce emissions of SO X and NH 3 as specified by the EU’s National Emissions Ceiling Directive (NECD). However twelve individual Member States, and the EU as a whole, reported emissions in the 2010 above their NECD 2010 emission ceilings for NO X , although the twelve Member States joining the EU in 2004/7 reported combined emissions below their collective NECD ceiling. Three EU-27 member states also reported 2010 NH 3 emissions above the levels of their NECD ceilings, neither of which are in the group of twelve new EU member states.
Of the three non-EU countries having emission ceilings for 2010 under the UNECE/CLRTAP Gothenburg protocol (Liechtenstein, Norway and Switzerland), both Liechtenstein and Norway reported NO X emissions in 2010 that were substantially higher than their respective 2010 ceilings. Liechtenstein also reported 2010 NH 3 emissions above the level of their Gothenburg protocol 2010 ceiling.
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Emissions of acidifying substances
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Contribution to total change in nitrogen oxides (NOx) emissions for each sector between 1990 and 2010 (EEA member countries)
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The contribution made by each sector to the total change in nitrogen oxide (NOx) emissions between 1990 and 2010.
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Change in nitrogen oxides (NOx) emissions for each sector between 1990 and 2010 (EEA member countries)
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Percentage change in nitrogen oxide (NOx) emissions for each sector between 1990 and 2010.
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Change in emissions of nitrogen oxides compared with the 2010 NECD and Gothenburg protocol targets (EEA member countries)
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The reported change in nitrogen oxide emissions (NOx) for each country, 1990-2010, in comparison with the 2010 NECD and Gothenburg protocol targets.
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