Data and maps

Percentage of urban population resident in areas where pollutant concentrations are higher than selected limit/target values, 1997-2009 (EU-27): The rationale for selection of pollutant and corresponding limit/target values for CSI 004 is given in the justification for indicator selection. Only urban and sub-urban background monitoring stations have been included in the calculations. Data for Cyprus, Luxembourg and Malta, are not included due to the geographical coverage of the Urban Audit.
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4th highest 24-hour mean SO2 concentration observed at urban stations, 1997-2009 (EU-27): Only urban and sub-urban background monitoring stations have been included in the calculations. Data for Cyprus, Denmark, Finland, Luxembourg and Malta, are not included due to the geographical coverage of the Urban Audit.
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Percentage of urban population resident in areas for days per year with SO2 concentration exceeding daily limit value, 1997-2009 (EU-27): The limit value is 125 µg SO2/m3 as a daily average, not to be exceeded more than three days in a year and to be met by 2005. Over the years 1997-2009 the total population for which exposure estimates are made, increased from 56 to 100 million people due to an increasing number of monitoring stations reporting under the Exchange of Information Decision. Year-to-year variations in exposure classes are partly caused by the changes in spatial coverage. Only urban and sub-urban background monitoring stations have been included in the calculations. Data for Cyprus, Denmark, Finland, Luxembourg and Malta, are not included due to the geographical coverage of the Urban Audit.
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26th highest maximum daily 8-hour mean ozone concentration observed at urban background stations, 1997-2009 (EU-27): Only urban and sub-urban background monitoring stations have been included in the calculations. Data for Cyprus, Luxembourg and Malta, are not included due to the geographical coverage of the Urban Audit.
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Percentage of urban population resident in areas for days per year with ozone concentrations over the long-term objective for protection of human health, 1997-2009 (EU-27): The target value is 120 µg O3/m3 as daily maximum of 8 hour mean, not to be exceeded more than 25 days per calendar year, averaged over three years and to be achieved where possible by 2010. Over the years 1997-2009 the total population for which exposure estimates are made, increased from 47 to 114 million people due to an increasing number of monitoring stations reporting under the Exchange of Information Decision. Year-to-year variations in exposure classes are partly caused by the changes in spatial coverage. Only urban and sub-urban background monitoring stations have been included in the calculations. Data for Cyprus, Luxembourg and Malta, are not included due to the geographical coverage of the Urban Audit.
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Annual mean NO2 concentration observed at urban background stations, 1997-2009 (EU-27): The figuer shows the annual mean NO2 concentration observed at urban background stations. Only urban and sub-urban background monitoring stations have been included in the calculations. Data for Cyprus, Luxembourg and Malta, are not included due to the geographical coverage of the Urban Audit.
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Percentage of population exposed to NO2 annual concentrations in urban areas, 1997-2009 (EU-27): The annual mean limit value is 40 µg NO2/m3 and to be met by 2010. Over the years 1997-2009 the total population, for which exposure estimates are made, increased from 54 to 118 million people due to an increasing number of monitoring stations reporting air quality data under the Exchange of Information Decision. Year-to-year variations in exposure classes are partly caused by the changes in spatial coverage. Only urban and sub-urban background monitoring stations have been included in the calculations. Data for Cyprus, Luxembourg and Malta, are not included due to the geographical coverage of the Urban Audit.
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Energy-related emissions of acidifying substances (ENER 006) - Assessment published Aug 2011: Energy-related emissions account for only 2% of NH 3 emissions but 95% of NO x and SO 2 emissions from the EEA-32 in 2008. They fell by 4%, 5% and 17% respectively between 2007 and 2008 in EEA32 countries (Since 1990, these energy related emissions declined by 35% and 75% for NO x and SO 2 respectively but increased by 103% for NH 3 in the EU-27 and declined by 30% (NO x ) and 71% (SO 2 ) and increased by 106% (NH 3 ) in EEA-32 member countries. However as noted earlier the percentage of energy related NH 3 emissions are insignificant compare dot 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. Despite significant progress and the EU-27 on not track to meet overall targets [1] , 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 National Emissions Ceilings Directive (NECD) and the UNECE Gothenburg Protocol. [1] See Pollutant Specific Factsheet NOx
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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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