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CALPUFF is an advanced, integrated
Lagrangian puff modeling system for the simulation of
atmospheric pollution dispersion distributed by the Atmospheric Studies Group at TRC Solutions.
It is maintained by the model developers and distributed by TRC.
The model has been adopted by the
United States Environmental Protection Agency (EPA) in its ''Guideline on Air Quality Models'' as a
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 integrated 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
Meteorology is a branch of the atmospheric sciences (which include atmospheric chemistry and physics) with a major focus on weather forecasting. The study of meteorology dates back millennia, though significant progress in meteorology did not ...
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, there are numerous other processors that may be used to prepare geophysical (land use and terrain) data in many standard formats, meteorological data (surface, upper air, precipitation, and buoy data), and interfaces to other models such as the Penn State/
NCAR Mesoscale Model (MM5), the
National Centers for Environmental Prediction (NCEP) Eta model and the RAMS meteorological model.
The CALPUFF model is designed to simulate the dispersion of buoyant, puff or continuous point and area pollution sources as well as the dispersion of buoyant, continuous line sources. The model also includes
algorithms for handling the effect of downwash by nearby buildings in the path of the pollution plumes.
History
The CALPUFF model was originally developed by the Sigma Research Corporation (SRC) in the late 1980s under contract with the
California Air Resources Board (CARB)
[ and it was first issued in about 1990.
The Sigma Research Corporation subsequently became part of Earth Tech, Inc. After the US EPA designated CALPUFF as a preferred model in their ''Guideline on Air Quality Models'', Earth Tech served as the designated distributor of the model.
In April 2006, ownership of the model switched from Earth Tech to the TRC Environmental Corporation. More recently ownership transferred to Exponent,][
]
See also
* Air pollution dispersion terminology
* Atmospheric dispersion modeling
* List of atmospheric dispersion models
References
Further reading
www.crcpress.com
*
*
External links
— ''ASG at TRC''.
*
{{Atmospheric, Oceanographic and Climate Models
Air pollution
Atmospheric dispersion modeling
Air pollution in California
Air pollution in the United States