Nov 25, 2013

BREEZE®, the market-leading air dispersion modeling software used by environmental professionals around the world, released a new version of CALPUFF, a non-steady-state puff dispersion model that simulates the effects of time- and space-varying meteorological conditions on pollution transport, transformation, and removal. BREEZE CALPUFF 2.1 incorporates these new features:

  • Supports the latest TRC version of CALPUFF 6.42, CALMET 6.334, and CALPOST 6.292
  • Supports the latest EPA-approved CALPOST 6.221
  • Includes back compatibility with previous BREEZE CALPUFF projects
  • Streamlines visibility post-processing
  • Improves the User Interface for newly included executables and functionalities
  • Integrates all executables with BREEZE CALPUFF installer
  • Features an updated User Guide


Our software is designed to be easy to learn and use because it adheres to Microsoft® development standards for intuitive, uniform graphical user interfaces, and features standardized toolbars, views, menus, commands, and dialog boxes.

BREEZE products are developed and distributed by Trinity Consultants, an environmental consulting firm with extensive expertise in dispersion modeling. More than 4,000 environmental and safety professionals in 80 countries worldwide use BREEZE Software to predict the impacts resulting from air emissions, fires, and explosions. For more information on BREEZE CALPUFF 2.1, visit or email