Technical Specs

Puff Air Dispersion Model


This product is a Microsoft Windows-based program that can be installed in the following Windows operating systems:

  • 32-bit and 64-bit Operating Systems
  • Windows 11
  • Windows 10

Minimum requirements:

  • 1 GHz or faster processor
  • At least 20 GB of available hard disk space
  • 2 GB of RAM (4 GB recommended)


CALPUFF View is an interface for the CALPUFF modeling system. See below the technical specifications for this model:

Model TypeNon-steady state Gaussian Puff model
Range200-300km from the source
Time Step1-hour (Version 5.8), Variable down to the second (Version 6 & Version 7)
TerrainElevated, processed by TERREL
Building DownwashModeled by BPIP or BPIP-PRIME
Source TypesPoint, area, volume, line, flare (V7 only), road (V7 only)
MeteorologyHourly surface, upper air and precipitation data and/or prognostic data (e.g. MM5 or WRF)
Wind FieldThree dimensional
Release TypesBuoyant or neutrally buoyant plumes
Emissions TypesConstant or time-varying, planned or fugitive
Atmospheric ChemistryMESOPUFF II, RIVAD/ARM3, SOA, Radiological decay, ISORROPIA, and user-specified transformation rates