Comparing modeling results with known concentrations values that have been measured, contributes to improve their quality and credibility.

Input data such as emission factors, meteorological data as well as topographic conditions are often inaccurate, justifying the improvement of the modeled concentration field by adjusting the input.

The example shows the tuning of a point source model (Gaussian plume model IMMPROG)-around a power station. The pollutant concerned was sulfuric dioxide 1

The first graph shows the modeling results without any tuning 2

The second Graph shows the correlation after adaptation of the windfiled to the actual topography 3

The third graph shows the coincidences after skipping of Sites, which were obviously not included the impact sphere of the plant 4.