AERMOD is a steady-state Gaussian dispersion model that represents the current state-of-science and promulgated dispersion model from the U.S. EPA. BREEZE AERMOD is an enhanced version of the EPA-approved AERMOD that provides modelers with the tools and functionality required to perform air quality analyses that help to address both permitting, regulatory, and nuisance issues as well as perform academic research. BREEZE AERMOD/ISC offers the most complete air quality modeling system available on the market today. No other application is used by more air quality professionals around the world.
U.S. EPA AERMOD incorporates air dispersion based on planetary boundary layer turbulence structure and scaling concepts, including treatment of both surface and elevated sources, and both simple and complex terrain. There are two regulatory components of EPA’s AERMOD:
- AERMET - a meteorological data preprocessor (available as a separate BREEZE application; a basic, merge-only version of BREEZE AERMET comes standard with BREEZE AERMOD.)
- AERMAP - a terrain data preprocessor (embedded in BREEZE AERMOD)
Non-regulatory components of EPA’s AERMOD include:
- AERSCREEN - a screening version of AERMOD (available as a separate BREEZE application)
- AERSURFACE - a surface characteristics preprocessor
- BPIPPRIME - a multi-building dimensions program that incorporates the GEP technical procedures for PRIME applications (embedded in BREEZE AERMOD)
BREEZE AERMOD enhances these basic EPA programs providing modelers with more functionality and tools for analyzing results.