Input assistance
Insert and validate CALPUFF parameters through organized project controls.
Air dispersion modeling · Windows
A graphical environment for CALPUFF 7.2.1 that simplifies input preparation, model checks, execution, CALPOST processing, and geographic review.

Model interface
EW_CALPUFF provides a structured layer around the CALPUFF modeling chain while keeping source, receptor, meteorological, and postprocessing choices visible to the user.
The interface reads CALMET output prepared by the user or supplied through Enviroware’s MeteoData service. Sources and discrete receptors can be entered numerically or positioned directly on the map. Before a simulation, project inputs are checked and CALPUFF files are generated.
After the run, CALPOST can extract annual averages, percentiles, running averages, and other statistics from binary concentration output.
Define sources, receptors, pollutants, and time-varying emissions.
Check project consistency before creating model input.
Coordinate CALPUFF execution and CALPOST statistics.
Review fields, receptors, contours, terrain, and land use.
Capabilities
Insert and validate CALPUFF parameters through organized project controls.
Place domains, sources, and receptors graphically and export them to KML.
Extract meteorological data at any point and plot terrain and land use.
Plot postprocessed concentrations and review time or statistic results.
Display concentration fields over the embedded base map.
Export contours to KML and copy or save the processing log in RTF format.
Project workflow
EW_CALPUFF does not replace the scientific model; it coordinates the data and executables needed to apply it efficiently.
Interface

Configure model entities and review their position within the domain.

Inspect model output and prepare statistics for technical assessment.
The installer includes the interface and its PDF user guide. CALPUFF and CALPOST executables must be obtained from the official model source.
Download evaluation →Download the sample two-month CALMET dataset or review current annual license terms.
CALPUFF and CALPOST executables are distributed separately. Refer to the US EPA model page and the EW_CALPUFF guide.
Need meteorological input?
Our MeteoData service can prepare the WRF, MMIF, CALWRF, or CALMET files required by your project.