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Last Year‘s Messages about Air Quality in Germany

Some Aspects on Air Quality in Germany related to SOER 14th EIONET Meeting, Warsaw, 05 - 06 October 2009. Though Emissions have decreased during the last two decades significantly, exeedances of limit values for PM 10 , NO 2 and target values for O 3 still occur.

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Last Year‘s Messages about Air Quality in Germany

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  1. Some Aspects on Air Quality in Germanyrelated to SOER14th EIONET Meeting, Warsaw, 05 - 06 October 2009

  2. Though Emissions have decreased during the last two decades significantly, exeedances of limit values for PM10, NO2 and target values for O3 still occur. Summer smog has become history in Germany …at least for the time being sincerural background: ozone peak values have decreased significantly but … urban background: ozone values are increasing from low level to a medium high level. Air quality trends seem to be hidden behind inter-annual variations during the period 2000 – 2006 Last Year‘s Messages about Air Quality in Germany 14th EIONET Meeting, Warsaw, 05-06 October 2009

  3. Exceedances of air quality standards for human health: PM10daily mean: 18 out of 417 stations, 17 traffic + 1 near industry NO2annual mean: 89 of 426 stations, all traffic O3 max. 8-h mean: 93 of 274 stations, 85 background + 8 near industry Overall observation: one of the best years with respect to exceedances of air quality standards air quality is worst in agglomerations with respect to PM10 and NO2, most hot spots are found at monitoring sites near traffic Ozone is highest in rural areas and is increasing from low levels to higherlow levels State of Ambient Air Quality in Germany 2008 14th EIONET Meeting, Warsaw, 05-06 October 2009

  4. Geographical Characteristics of Air Pollution 14th EIONET Meeting, Warsaw, 05-06 October 2009

  5. Geographical Characteristics of Air Pollution 14th EIONET Meeting, Warsaw, 05-06 October 2009

  6. Exceedances of air quality standards: PM10daily mean: 18 out of 417 stations, 17 traffic + 1 near industry NO2annual mean: 89 of 426 stations, all traffic O3 max. 8-h mean: 93 of 274 stations, 85 background + 8 near industry Overall observation: one of the best years with respect to exceedances of air quality standards air quality is worst in agglomerations with respect to PM10 and NO2 – most hot spots found at monitoring sites near trafficOzone is highest in rural areas and is increasing from low levels to higher low levels agglomerations seemingly, no clear improvement in the air quality situation since the beginning of this decade State of Ambient Air Quality in Germany 2008 14th EIONET Meeting, Warsaw, 05-06 October 2009

  7. Emission vs. Air Quality normalized to 1995 14th EIONET Meeting, Warsaw, 05-06 October 2009

  8. PM10 annual mean, 2001 -2008 14th EIONET Meeting, Warsaw, 05-06 October 2009

  9. NO2 annual mean, 2001 -2008 14th EIONET Meeting, Warsaw, 05-06 October 2009

  10. Mann Kendall significance test PM10 NO2 O3 14th EIONET Meeting, Warsaw, 05-06 October 2009

  11. Developed originally for quantifying trends of meteorological time series Suitable for time series that are expected to have a monotonic trend without seasonal or cyclic fluctuations OUTPUT: levels of significance (error probability) mean slope (median of all inter annual changes) Mann-Kendall Test for Significance in Trends 14th EIONET Meeting, Warsaw, 05-06 October 2009

  12. urban background urban traffic Mann-Kendall Test for NO2 Evaluation of individual stations 1995 -2007 52 stations 51 stations • 82%with falling trend, thereof 60% with significant • mostly decreasing concentration • 84% with falling trend, thereof 36% with significant trend,15% rising but uncertain trend • no unique trend rural background: all stations have falling or stagnating trend 14th EIONET Meeting, Warsaw, 05-06 October 2009

  13. urban background urban, traffic Mann-Kendall Test for PM10 Evaluation of individual stations 1995 -2007 41 stations 48 stations • 56%: significant falling trend • significant decrease of concentrations • 44%: significant falling trend • significant decrease of concentrations rural background: no clear trend 14th EIONET Meeting, Warsaw, 05-06 October 2009

  14. urban background urban traffic Mann-Kendall Test for O3 Evaluation of individual stations 1995 -2007 23 stations 57 stations • 57%: significant trend, 70% thereof rising • significant increase of concentrations • 58%: rising trend, most of them significant • significant increase of concentrations rural background: no clear trend 14th EIONET Meeting, Warsaw, 05-06 October 2009

  15. PM10 NO2 urban background rural background urban traffic O3 Mann-Kendall Test 14th EIONET Meeting, Warsaw, 05-06 October 2009

  16. EOR 14th EIONET Meeting, Warsaw, 05-06 October 2009

  17. PM10 NO2 urban background rural background urban traffic O3 Mann-Kendall Test 14th EIONET Meeting, Warsaw, 05-06 October 2009

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