Simulation modeling for air quality control

Simulation modeling will have a major role in air quality programs for forecasting, developing both temporary and long-range controls and planning regional land use. Such air quality models use pollutant emissions and meteorological measurements to simulate concentrations of atmospheric pollutants. Box-and Gaussian-type models have serious short comings, but the new generation models (such as NEXUS) are approaching an adequate resolution and accuracy for routine applications. The NEXUS model simulated pollutant concentrations within 20 percent of the observed values.