IMMIS^net Product Flyer

IVU Umwelt GmbH Environmental Planning and Information Systems Emmy-Noether-Str. 2 D-79110 Freiburg Tel: 49 (0)761 / 888 512-0 Fax: 49 (0)761 / 888 512-12 info@ivu-umwelt.de www.ivu-umwelt.de Dispersion modeling in GIS IMMISnet is a Gaussian multi-source dispersion model for calculating the spatial extent of concentration levels of air pollution. Treated as a stationary process, the model describes the dilution and transport of pollutants from point, line or area sources, using a Gaussian normal distribution. Gaussian dispersion models are instruments that have been tried and tested for many years for dealing with problems of air pollution distribution within the framework of plans for maintaining air quality, or planning permit procedures. Regional background concentration caused by street traffic GIS Integration The software is integrated into the user interface of ArcGIS® as an Extension for ArcMap. immisnet.1s.en.doc/23.04.12 IMMISnet menu in ArcGIS® Area of application • Calculation of regional and urban background concentration • Calculation of roof-top concentrations as background for micro-scale modeling of street canyons • Temporal variation of emission data taken into account through time-variation curves for different polluter groups • Calculation of hourly concentrations at receptor points • Calculation of statistical parameters (annual mean values and percentiles) • Simultaneuos calculation of up to 10 pollutants Input data • Meteorological data (wind direction, wind speed, stability): representative frequency distribution or time series • Emission data: area sources, line sources and point sources • Receptors: location and height Functionality • Data management in GIS Shape-format for emission sources, receptor data, and results • Tools to merge emission sources from different input Shape-files • Results directly available in ArcGIS for visualization and analyses • Direct calculation of background concentrations for IMMISluft-data bases • Additional batch operation mode outside of GIS environment Dialog to set calculation parameters Detailed information about IMMISnet is available at http://www.immis.de/. The software IMMISnet is available as an Extension for ArcGIS®. IVU Umwelt offers expertise, studies and con-sulting using IMMIS, including data acquisition and preparation, graphical and numerical data representation and documentation, and impact analysis of measures to be taken.