Lagrangian Particle Tracking Air Dispersion Model

Technical Specifications

AUSTAL View is an interface for the AUSTAL2000 model. See below the technical specifications for this model:



Model Name


Developed By

German Federal Environmental Agency (UBA)

Model Type

Lagrangian particle tracking air dispersion model


100 times the source height. For example, for a stack height of 250 m a range of up to 25 km in radius is realistic.

Source Types

Point, area, volume, line, cooling tower

Pollutants and Emissions

Multi-pollutants can be model in a single run
Emissions can be specified as constant or time-dependent


Hourly meteorological data in AKT, AKTerm, and AKS formats are accepted by the model. The AKT, AKTerm format contain the hourly data for wind direction, wind speed, and stability class according to Klug/Manier. The AKS file contains the statistics of wind direction, wind velocity and dispersion class.

Note: To support users without access to the above met file formats, AUSTAL View accepts a CSV file with the following hourly met data parameters: wind direction (deg), wind speed (m/s), and Monin-Obukhov Length (m).


Flat or Elevated. The model accepts terrain data in GridASCII format.

Note: AUSTAL View accepts the following terrain data formats: GridASCII, XYZ, USGS DEM, and SRTM.


Single or nested grid, monitor points

Other Options

Several additional model options are available, such as:

  • Wind field around buildings and terrain
  • Conversion of NO to NO2 (according to guideline VDI 3782 Part 1
  • Variable source parameters (temperature, thermal flow, discharge velocity, and time scale

Output Type

The output type depends on the pollutant being modeled. Examples of possible outputs are:

  • annual mean of concentration,
  • annual mean of deposition,
  • maximum daily mean with nn exceedances,
  • maximum hourly mean with nn exceedances,
  • estimative of the statistical uncertainty, and
  • time series of hourly concentration (only at monitor point locations)

Regulatory Status

Regulatory air dispersion model in Germany

For a full description of the AUSTAL2000 model, please see the model documentation below:

AUSTAL2000 Model Documentation (English)

AUSTAL2000 Programmbeschreibung (German)

System Requirements

This product is a Microsoft Windows-based program that can be installed in the following Windows operating systems:

  • 32-bit and 64-bit Operating Systems
  • Windows 10
  • Windows 8 & 8.1
  • Windows 7 (Home Premium, Professional, and Ultimate Versions)

Minimum requirements:

  • An Intel Pentium 4 processor (or equivalent) or higher
  • At least 2 GB of available hard disk space
  • 1 GB of RAM (2 GB recommended)