Air Quality Modelling Software

The EnviMan package is a modular built software that offers a range modelling functions. 
  
1. Processing Map Data (GIS)
EnviMan Mapper is a module for preparing suitable maps to be used in all the other EnviMan modules requiring a GIS interface. It imports and exports raster and vector graphics for the most popular formats such as Arc View shape files (*.shp), Map Info (*.mif) and Windows Bitmap (*.bmp). Different sets of map data can be prepared for optimum use. 

2. Emission Data Base (EDB) Management
EnviMan AQEmissioner is state-of-the-art software, designed for compiling emission inventories in urban areas or regions. Top-down or bottom-up strategies are supported. Direct emission information can be entered as well as activity related information linked to emission factors.
    Map information can be converted to emission information and data can be compiled as point sources, area sources, line (road traffic, sea traffic, air traffic) or grid sources. 
    Dynamic emission simulation is possible to generate using time variation functions as well as emission factors. AQEmissioner includes emission classes, a useful tool to provide alternative emission scenarios for assessment studies using the dispersion models. 

3. Managing Meteorological Data
The EnviMet module can be used for setting up boundary scaling algorithms as a function of available meteorological data, and display dispersion parameters such as the mixing height, stabiltiy class, turbulence parameters etc. In addition, data can be exported/imported via MS Excel 5/7 spreadsheets. Tools are provided to set up automatic import of meteorological data from EnviMan ComVisioner.

4. Dispersion Modelling and Planning
EnviMan AQPlanner can be used for simulation of various air quality scenarios in urban areas or regions. Typical applications include long-term planning in cities and regions, what if... scenarios, ari quality mapping, and detection of critical areas.
    AQPlanner includes different state-of-the-art dispersion models for regional modelling, urban/local area modelling and street canyon calculations. As input data, the module combines map data from EnviMan Mapper,  emission data from AQEmissioner, and meteorological data from the EnviMet. The graphical model output can be exported as ESRI shape files, raster files (jpeg, etc.) as well as numerical values in MS Excel format. 

5. Real-time Dispersion Modelling
The EnviMan Nowcaster is used is used for real-time dispersion calculations, estimation of the present air quality situation and presentation of historical periods of air quality simulations. Nowcaster can be supplied in two versions. First, the Industrial version, using real-time CEM data and meteorological data, and second, the Urban version, using real-time traffic data and meteorological data.

6. Location of Emission Sources
The EnviMan Finder is a tool for tracking emission sources. Given information about source release height, weather data and air quality data (measured at two or more monitoring stations), the Finder will track the position from where the emissions are likely to be released. Output will be given as a map howing the likelihood of where the sources are located (isopleths). Selecting one or several points/areas, the Finder will estimate the source emission rates. 
 
More Information 
Please contact Opsis or your Opsis representative to get the recent information about the EnviMan software.