Dispersion of Air Pollution & Penetration into the Local Environment

Background Information

This page provides a collection of background technical information and will grow.


The DAPPLE project


A summary of the DAPPLE project was published in the September 2008 issue of the HPA Chemical Hazards and Poisons Report (Issue 13, pages 24-28). The full report can be obtained here .

The structure of the flow at an urban intersection


This note presents and discusses some preliminary flow visualisation studies for a diagonal wind direction over the 1:200 scale DAPPLE site model. The images shown were extracted from video recordings and it was these that provided much of the insight into flow behaviour. The note can be viewed as a pdf file here .


Atmospheric dispersion Wikipedia


During the 10th conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes the chairman of the Harmonisation Initiative (Helge Olesen, Denmark) announced that a so-called Wiki would soon be launched. The Wiki now exists - but is in its infancy. Its purpose is to facilitate pooling of experiences within the modelling community.

The Atmospheric Dispersion Modelling Wiki can be reached here.

Edited extracts from Helge Olesen's presentation.

One of the main ideas behind the Wiki is this. In the community of atmospheric dispersion modellers, sometimes some of us fall into pitfalls. We may do things in an inappropriate manner, and we are not always stopped. Sometimes the mistakes are repeated - others fall into the same traps. We are not very good to convey our experiences to each other. There is an unnecessary duplication of effort; too much work is forgotten and partly wasted.

There are many web sites dedicated to atmospheric dispersion models but the Atmospheric Dispersion Wiki site has the following unique qualities: The Atmospheric Dispersion Modelling Wiki can be reached here.