Sep 01, 2015

BREEZE Software, the market-leading provider of dispersion modeling software used by environmental professionals around the world, released a new version of BREEZE AERMOD and BREEZE AERMET. These updates include the latest U.S. EPA AERMOD and AERMET executable 15181, released on July 24, 2015.


This update includes the U.S. EPA AERMOD executable 15181 and added capabilities in Source Options, all designed to enhance productivity for air quality analyses. Key features include:

  • Incorporated the latest U.S. EPA AERMOD executable 15181, which includes new source types and new options for LowWind and NO2 modeling 
  • Added a feature to allow applying an in-stack NO2/NOx ratio to multiple sources all at once for all source types
  • Added a new tool to facilitate users to calculate buoyancy parameters for buoyant line sources

  BREEZE AERMOD 7.10 - buoyant line sources

Read the BREEZE AERMOD 7.10 release notes for more details.



This release integrates the U.S. EPA AERMET executable 15181, ensuring full regulatory compliance, and bug fixes. Key features include: 

  • Incorporated the latest U.S. EPA AERMET executable 15181, which includes refinements to the Bulk Richardson Number boundary layer algorithm
  • Improved network dongle efficiency  
  • Updated the logic between primary and secondary sets of surface characteristics
  • Fixed a bug that caused a wrong Stage 3 control file to be generated when only on-site and upper air data are used


Read the BREEZE AERMET 7.6 Release Notes.

BREEZE products are developed and distributed by Trinity Consultants, an environmental consulting firm with extensive expertise in dispersion modeling. For over 30 years, BREEZE has assisted environmental, hazard and safety professionals worldwide with assessing the impacts of air emissions, fires, and explosions.