Determination of mixing heights and mixing height categories for urban air pollution modelling |
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| Authors: | S Lavaulx-Vrecourt H Kolb |
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| Institution: | Institut für Meteorologie und Geophysik der Universit?t Wien , Hohe Warte 38, A-1190, Wien, Austria |
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| Abstract: | Abstract In urban air pollution modelling mixing height is an important input parameter. Several methods to determine minimum mixing heights are compared and their advantages and drawbacks discussed. By using Holtzworth's method to calculate minimum and maximum mixing heights and by interpolating between the two values, statistics of hourly mixing heights for the city of Vienna are determined. Suitable categories of mixing heights for a Gaussian urban air pollution model are found by taking into account the specific emission situation of the city, thus assuring that best use is made of the input capacity of the model. |
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