CALPUFF is an advanced non-steady-state meteorological and air quality modeling system developed by scientists in the Atmospheric Studies Group of The Research Corporation (TRC). The model has been adopted by the U.S. Environmental Protection Agency (U.S. EPA) in its Guideline on Air Quality Models as the preferred model for assessing long range transport of pollutants and their impacts on Federal Class I areas and on a case-by-case basis for certain near-field applications involving complex meteorological conditions. The modeling system consists of three main components and a set of preprocessing and postprocessing programs. The main components of the modeling system are CALMET (a diagnostic 3-dimensional meteorological model), CALPUFF (an air quality dispersion model), and CALPOST (a postprocessing package).

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Source: The Atmospheric Studies Group. 2011. The CALPUFF Modeling System. Accessed on 9 September 2013. Available at