In the course of the European Council Directive on permissible air pollutant limit values, valid starting from 2005, there is an urgent call for action, particularly for fine dust PM10. current investigations show that the limit values in certain places in congested areas are exceeded. Only if it is possible to locate these Hot Spots, purposeful measures to reduce the ambient air pollution can be conducted. For an efficient identification of these Hot Spots numerical computer models or establishing measurement networks are too expensive. Using the statistical model STREET 5.0 a cost-effective screening of the air pollution situation caused by the traffic can be done. STREET 5.0 is an efficient and inexpensive instrument which provides a simple method of evaluating air pollution caused by traffic emissions in inner-city areas. It is a statistic model, the basis is 3-dimensional flow and dispersion calculations using the MISKAM mesoscale model. In collaboration with the city council of Trier more than 150 streets in Trier were investigated, mapped, and calculated. A special urban climate measuring network supplies the necessary meteorological input data about the wind field and precipitation events in the valley of the Moselle. Traffic censuses and mobile air pollutants measurements supplied the remaining input data. The mean annual air pollutant concentrations were calculated for NO2, CO, SO2, O3, Benzene and PM10. A comparison of the model results with the values obtained from the stations of the central emission measuring network of Rhineland-Palatinate shows very good agreements. The model was also used for urban planning and management. As the absolute level of air pollutant is mainly dependent on the amount of traffic in the street canyons, four different case-scenarios were calculated with varying quantities of traffic and interpreted for each street. The results for both NO2 and benzene show that the limits are not to be expected to be exceeded significantly.
Screening and scenarios of traffic emissions at Trier, Germany
Screening und Szenarien von Verkehrsemissionen in Trier, Deutschland
ESPR - Environmental Science and Pollution Research ; 11 , 5 ; 297-301
2004
5 Seiten, 2 Bilder, 4 Tabellen, 19 Quellen
Article (Journal)
English
GWLB - Gottfried Wilhelm Leibniz Bibliothek | 1979
|IuD Bahn | 2003
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