BREEZE Air Dispersion Modeling Software
BREEZE AIR products are an integrated family of air dispersion models for modeling continuous releases from industrial, highway, and other source types. These models are all industry-standard dispersion models, developed or recognized by the U.S.EPA and many other environmental authorities around the world.
These programs have many separate processing programs for things such as building downwash, terrain importation, and the plotting of results. BREEZE seamlessly integrates all of these tools in a common, easy-to-use interface, so that the modeler does not have to waste time sorting out all of the various input file and executable requirements.
There are numerous productivity tools included in BREEZE products to help modelers view meteorological data and perform other postprocessing operations.
Screening Air Dispersion Models:
SCREEN3 - SCREEN3 is a single source Gaussian plume model which provides maximum ground-level concentrations for point, area, flare, and volume sources, as well as concentrations in the cavity zone and concentrations due to inversion break-up and shoreline fumigation. SCREEN3 is a screening version of the ISC3 model.
AERSCREEN - AERSCREEN is the screening model for AERMOD. The model will produce estimates of regulatory design concentrations without the need for meteorological data and is designed to produce concentrations that are equal to or greater than the estimates produced by AERMOD with a fully developed set of meteorological and terrain data.
Refined Air Dispersion Models:
AERMOD - AERMOD is the preferred U.S. EPA air dispersion model. It is a steady-state plume model that incorporates air dispersion based on planetary boundary layer turbulence structure, scaling concepts including treatment of both surface and elevated sources, and both simple and complex terrain.
ISCST3 (ISC) - ISC3 is a steady-state Gaussian plume model which can be used to assess pollutant concentrations from a wide variety of sources associated with an industrial complex. This model can account for the following: settling and dry deposition of particles; downwash; point, area, line, and volume sources; plume rise as a function of downwind distance; separation of point sources; and limited terrain adjustment.
SCIPUFF - SCIPUFF is a time-dependent Gaussian puff model developed by Titan's ARAP Group that employs second-order closure turbulence modeling techniques to relate the dispersion rate to velocity fluctuation statistics. BREEZE developers created a Graphical User Interface (GUI) that include a GIS, user-friendly data entry forms, parameter range checks, 3D visualization, reporting, and more.
Roads - Roads is an air dispersion modeling suite that predicts air quality impacts of carbon monoxide (CO), nitrogen dioxide (NO2), particulate matter (PM), and other inert pollutant concentrations from moving and idling motor vehicles at or alongside roadways and roadway intersections.
Regional Air Dispersion Models:
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. CALPUFF can be applied for long-range transport and for complex terrain.
SCIPUFF - Second-order Closure Integrated PUFF Model (SCIPUFF) is a Lagrangian puff dispersion model that uses a collection of Gaussian puffs to predict three-dimensional, time-dependent pollutant concentrations. In addition to the average concentration value, SCIPUFF provides a prediction of the statistical variance in the concentration field resulting from the random fluctuations in the wind field.
HYSPLIT - The HYbrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model is the newest version of a complete system for computing simple air parcel trajectories to complex dispersion and deposition simulations.