Gaussian plume models are based on a simple mathematical formulation. The plume is assumed to travel horizontally and expand in the vertical and lateral (crosswind) directions. At each downwind distance the expansion of the plume is assumed to have a Gaussian distribution, and therefore to be described by the horizontal and vertical standard deviations of the distributions.

Several websites provide information on Gaussian plume models, assumptions, and formulations. For example:

- Gaussian Plumes from "Point" Sources
- Self-study notes - Gaussian Plumes
- Gaussian Equation
- Dispersion for Point Sources

An introductory chapter is included here as pdf file.

- Venkatram, A. and J. ThÃ© (2003) Introduction to Gaussian Plume Models. Chapter 7A of
*AIR QUALITY MODELING - Theories, Methodologies, Computational Techniques, and Available Databases and Software*. Vol. I - Fundamentals (P. Zannetti, Editor). Published by The EnviroComp Institute and the Air & Waste Management Association.

Guide prepared by P. Zannetti (9/2020). For corrections or expansions please contact us.