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Simulation of effects of vegetation on the dispersion of pollutants in street canyons

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An extension of the numerical model MISCAM to account for effects of vegetation is presented. Computed wind and turbulence profiles agree reasonably with wind tunnel data. Furthermore, the extended model yields plausible results for flow fields and pollutant distributions in an idealized street canyon with and without vegetation. While wind speed is reduced within the vegetated street canyon, a slight increase of pollutant concentrations is found.

Eine Erweiterung des numerischen Modells MISKAM zur Behandlung von Vegetationseinflu¨ssen wird vorgestellt. Berechnete Wind- und Turbulenzprofile stimmen zufriedenstellend mit Windkanaldaten u¨berein. Daru¨ber hinaus liefert das erweiterte Modell plausible Ergebnisse fu¨r die Stro¨mungs- und Ausbreitungsverha¨ltnisse in einer idealisierten Straßenschlucht mit und ohne Vegetation. Wa¨hrend die Windgeschwindigkeit bei vorhandener Vegetation abnimmt, wird ein geringfu¨giger Anstieg der Schadstoffkonzentrationen simuliert.


Document Type: Research Article


Publication date: 2001-07-01

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  • Meteorologische Zeitschrift (originally founded in 1866) is the joint periodical of the meteorological societies of Austria, Germany and Switzerland. It accepts high-quality peer-reviewed manuscripts on all aspects of observational, theoretical and computational research out of the entire field of meteorology, including climatology. Meteorologische Zeitschrift represents a natural forum for the meteorological community of Central Europe and worldwide.
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