Predicting the Movement of Hazardous Airborne Material

Predicting the Movement of Hazardous Airborne Material

Jonathan D. W. Kahl



Atmospheric scientists have long studied the processes that control the transport and dispersion of airborne material. These processes include the identification of sources, chemical transformations, processing by clouds, atmospheric diffusion and deposition. Long-range dispersion models are used to study a variety of air pollution problems including acid rain, haze and visibility, and ozone. These models are also used to study the effects of unplanned releases, such as chemical spills, nuclear accidents and potential terrorist strikes. This presentation will outline the major characteristics of atmospheric dispersion models, and will demonstrate a modeling system used as part of the United State's emergency response system.