Trend in NO2 and NOX annual mean concentrations (2001–2010) per station type (top); percentage frequency distribution of estimated annual change of NO2 annual mean concentrations at urban stations and at traffic stations (bottom)

Figure Created 26 Sep 2012 Published 26 Sep 2012 Last modified 29 Nov 2012
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All stations in EU Member States, with at least 75 % data coverage for at least eight years were included in the analysis. Concentrations per station type are given in μg/m3. In the top two diagrams a geographical bias exists towards central Europe where there is a higher density of stations. In the percentage frequency distribution graphs, closed bars denote stations showing a statistically significant trend, open bars denote stations with a non-significant trend. Statistically significant trends (level of significance 0.1) are calculated by applying the Mann-Kendall test. The applied method is described in de Leeuw, 2012.

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Microsoft Excel (Office 2010)
274.36 KB
Trend in NO2 and NOX annual mean concentrations (2001–2010) per station type (left)- Excel file
Microsoft Excel (Office 2010)
279.66 KB
Trend in NO2 and NOX annual mean concentrations (2001–2010) per station type (right) - Excel file
Microsoft Excel (Office 2010)
284.60 KB
Percentage frequency distribution of estimated annual change of NO2 annual mean concentrations at urban stations and at traffic stations (bottom) - Excel file

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Last upload:
26 Sep 2012
Temporal coverage:
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EEA standard re-use policy: unless otherwise indicated, re-use of content on the EEA website for commercial or non-commercial purposes is permitted free of charge, provided that the source is acknowledged (http://www.eea.europa.eu/legal/copyright). Copyright holder: European Environment Agency (EEA).
Owners:
European Environment Agency (EEA)
Processors:
European Topic Centre on Air pollution and Climate change mitigation (ETC/ACM)
Figure type:
Graph

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