Abstract
Emissions from highways are said to contribute to forest damage. Measurements of air quality at highways performed so far were mostly confined to distances close to the lanes. Relatively few is known for the range of several hundred metres away from the lanes, where emissions from the highway are expected to be still predominant.
Therefore the state of Lower Saxony and Volkswagen run a joined project to investigate the dispersion of exhaust emissions from a motorway in a rural surrounding. Measurements are performed by the “Fraunhofer-Institut für Toxikologie und Aerosolforschung” in Hannover. NOx, CO, and O3 are continuously monitored at different distances up to 600 m togehter with meteorological data. A single SO2 monitor indicates if pollution from more distant stationary sources occurs.
Diurnal variations of excess concentrations of NOx und CO were found to correlate well with traffic density. Measurements at different heights frequently showed the existence of vertical gradients indicating deposition of NO2 and SO2.
For Ozone, reduced levels were found on the leeward side of the highway.
The applicability of different dispersion models for describing the dispersion of car exhaust emissions and fitting the measured concentrations is discussed.
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© 1988 Kluwer Academic Publishers
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Kuhler, M., Kraft, J., Koch, W., Windt, H. (1988). Dispersion of Car Emissions in the Vicinity of a Highway. In: Grefen, K., Löbel, J. (eds) Environmental Meteorology. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-2939-5_4
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DOI: https://doi.org/10.1007/978-94-009-2939-5_4
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7823-8
Online ISBN: 978-94-009-2939-5
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