Air Dispersion Screening Model Based on AERMOD

BREEZE AERSCREEN is a screening model based on the U.S. EPA AERMOD air quality dispersion model and is compatible with the BREEZE AERMOD modeling system. It will produce estimates of “worst-case” 1-hour concentrations for a single source, without the need for hourly meteorological data. BREEZE AERSCREEN also includes conversion factors to estimate “worst-case” 3-hour, 8-hour, 24-hour, and annual concentrations. These concentration estimates are intended to be equal to or greater than the estimates produced by AERMOD with a fully developed set of meteorological and terrain data, however the degree of conservatism will vary depending on the application.


  • Incorporates the latest U.S. EPA AERMOD executable 19191 and U.S. EPA AERMAP executable 18081
  • Adds an option for 64-bit operating system users to select between running the 64-bit or 32-bit version of AERMOD
  • Continued support for earlier AERMOD executables
  • Models a single source: point/stack (vertical, horizontal, capped), area (rectangular, circular), volume, flare
  • Automates receptor arrays
  • Automates BPIP model setup, execution, and importing
  • Calculates maximum 1-hour concentration at each modeled receptor
  • Conversion factors to estimate “worst-case” 3-hour, 8-hour, 24-hour, and annual concentrations

Product Tour

Model Setup and Execution

BREEZE AERSCREEN is a simple to use, intuitive screening air quality modeling system designed to streamline the setup, execution, and analysis of a model scenario without the complications associated with data entry via a DOS comand prompt window. There are only a few steps that need to be completed to setup, execute and analyze model results. Also, all of the model setup is done in a series of data entry tabs or in a model properties panel.  Learn more



Entering meteorological data into BREEZE AERSCREEN takes only a matter of seconds. Users can quickly and efficiently enter values for the atmospheric conditions. In addition, users can use AERMET seasonal tables, upload an existing AERSURFACE output file, or use user-defined values for the surface characteristics. Learn more


Sources and Receptors

In BREEZE AERSCREEN, information on the source and receptors are entered in the respective tabs. For the source, users have the option to choose from a variety of source types and customize the properties accordingly. The receptors may be customized as well, giving the option of using flagpole receptors should users choose. A unit conversion option is also available when entering discrete receptor distances, making it easy to alternate between different units. Learn more


Building Effects

BREEZE AERSCREEN gives users the option to include a building in their model run. If users select this option, they can easily enter the different dimensions of the building, or upload an existing BPIP input file. When a building is included in AERSCREEN, the program will seamlessly and automatically calculate the impact of air flow over and around the building on the pollutant plume exiting the source. Learn more


Charts and Tables

BREEZE AERSCREEN provides extensive graphical and tabular results options to facilitate both analysis and documentation. The results from each model run can be displayed in three different formats: chart, table, and text file. Learn more


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