17. 10. 2005 | Folie 1

Investigation of PM10 in Austria

Vilnius, 17.10.2005

Wolfgang Spangl

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Limit Values for PM10

Directive 1999/30/EC, Annex III

Daily mean value: 50 µg/m³, not to be exceeded at more than 35 days per year• Margin of Tolerance: 25 µg/m³ 1999, linear reduction

annually from 2001 to 0 µg/m³ in 2005. Annual mean value: 40 µg/m³

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PM10 levels in Austria

Start of measurement in 2001 in most regions

Exceedance of Limit value throughout Austria.

Highest pollution in 2003

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Methods for investigation of the origin of PM10 in Austria

Emission inventoriesDifficulties/uncertainties: Resuspension, diffuse emissions, secondary particles (sulphate, nitrate, ammonium, organic)

Backward Trajectories (calculated from ECMWF wind data)

Detailed analyses of local meteorolgical situations Daily, weekly variation, correlation with gaseous

pollutants Chemical Analyses

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Long-Range Transport

96-h-Backward-trajectories for „typical“ cases of long-range transport of PM10: a) Southern Romania and northern Serbia, b) Southern Poland and Moravia

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Long-Range Transport

96-h-Backward-trajectories for „typical“ cases of a) long-range transport from Hungary, b) Regional accumulation

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Long-Range Transport

Statistical analysis: Residence time of trajectories per pixel weighted with the difference from the 3-month-mean of the PM10-Concentration in Vienna, Winter 2003

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European PM10-Emissions

PM10-Emissions EMEP-Data-base, 2001

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Origin of PM10 in Vienna

origin of PM10-concentrations in Viennadaily means > 45µg/m³, June 1999 - March 2004

Schafberg

Liesing

Rinnböckstraße

possible maximum close to traffic

Lobau

Urban background Vienna 15% (average)

Regional emissions in Austria without Vienna 20%

long range transport (40%)

Regional emissions, foreign countries 20%

Hot spots 25% (average)

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Origin of PM10 in different Regions in Austria

Extra-alpine Regions: Long range transport (mainly from central and eastern

Europe) Regional accumulation (approx 100 – 200 km) Urban and local emissions

Alpine basins and valleys: Local and regional accumulation due to unfavourable

dispersion conditions High local emissions (road traffic, wood burning, industry)

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Further Information

Annual Daily Air Quality Reports and on-line data Reports about Air Quality in Austria

can be retrieved from our web-site

www.umweltbundesamt.at