outdoor ETS dispersion

Are there studies on outdoor ETS dispersion/modeling?

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Upcoming article on local outdoor dispersion of smoke

As a matter of fact, we are just about to submit a paper where we have measured and modeled concentrations of outdoor air pollution in a 3-D grid near a point source (simulating a cigarette or cigar). We also have a new study that will be specifically looking at air flows and dispersion in small-scale settings where smokers may gather, e.g., near buildings and on sidewalks. I have not really seen other studies that look at dispersion on this small scale -- although there are many "street canyon" effects. But we are looking at something more on the scale of 1 meter. Stay tuned, I will post here when the paper is published.