Abstract
Aircraft measurements of NO x , NO, O 3, SO 2 were carried out leeside of the city of Munich during weak-wind inversion situations. Such meteorological situations occur in the Munich area mainly during anticyclonic weather or ’Föhn’-situations. In both cases low easterly winds and an inversion layer lead to highly polluted urban plumes with impact on the so called ”Fünf-Seen-Land” west of Munich.
NO x concentrations exceeding 190 ppb and O 3 concentrations exceeding 140 ppb were observed in some cases. The NO/NO x ratio was decreased and the O 3 concentrations were significantly enhanced in the downwind areas.
Massflux estimations showed a total NO x emission in Munich of 2.1 kg/s. Due to the emission situation in Munich it can be assumed that the main emitter groups are the car traffic, domestic heating systems and power plants.
The SO 2 measurements indicate that there are no significant SO 2 sources present in the Munich area. As a result of recent measurements one can conclude, that mainly long-range transport of SO 2 from our eastern neighbouring countries (CSSR, GDR) is responsible for high SO 2 concentrations in the Munich area.
Additional computer simulations over the complex terrain of interest show a strong influence of topography on transport and dispersion.
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Reference
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© 1988 Kluwer Academic Publishers
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Rösler, F.M., Paffrath, D., Peters, W. (1988). Airborne Measurements to Investigate the Transport and the Chemistry of Polluted Air Leeside of the City of Munich. In: Grefen, K., Löbel, J. (eds) Environmental Meteorology. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-2939-5_30
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DOI: https://doi.org/10.1007/978-94-009-2939-5_30
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7823-8
Online ISBN: 978-94-009-2939-5
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