Urban trees: how do they affect air quality?

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• Maarten van Reeuwijk, Imperial College London
• Friday 15 October 2021, 16:00-17:00
• MR2, Centre for Mathematical Sciences, Wilberforce Road, Cambridge.

If you have a question about this talk, please contact Prof. Jerome Neufeld.

In this seminar I will discuss the effect that trees have on air flow of air pollutant transport. The interaction of trees with their environment is extremely complex: trees provide shading, absorb and emit radiation, evaporate water, cause drag and absorb/deposit pollutants. All these processes are incorporated in to a minimalistic tree model. Analysis of the tree model reveals the parameter space that map the cooling regimes of the tree. The model is then incorporated into an urban large-eddy simulation code uDALES, and the effect of trees on urban air quality is investigated. It is shown that trees can be both beneficial and detrimental to urban air quality, depending on how much they block the interaction between the street and the atmosphere.

This talk is part of the Fluid Mechanics (DAMTP) series.

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