Atmospheric Dispersion Modelling

CALPUFF is a non-steady-state, integrated modeling system used for a wide variety of air quality modeling studies, including toxic pollutant deposition, near-field impacts from point, line, area, and volume sources, forest fire impacts, visibility assessments, and long range transport studies. The model has been adopted by the U.S. Environmental Protection Agency in its Guideline on Air Quality Models as the preferred model for assessing the long range transport of air pollutants.

The integrated system consists of three main components: CALMET (a diagnostic 3-dimensional meteorological model), CALPUFF (an air quality dispersion model), and CALPOST (a postprocessing package). Each of these programs has a graphical user interface (GUI). In addition to these components, the system includes a set of pre-processing and post-processing programs that may be used to prepare geophysical (land use and terrain) data in many standard formats, meteorological data (surface, upper air and precipitation data), and interfaces to other models.

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