As high-density monitoring networks observing pollutant concentrations are costly to
establish and maintain, researchers often employ various models to estimate concentrations
of air pollutants. The AMS/EPA Regulatory Model (AERMOD) is a fairly recent and promising
model for estimating concentrations of air pollutants, but the effectiveness of this model at
different time scales remains to be verified. This paper evaluates the performance of
AERMOD in estimating sulfur dioxide (SO2) concentrations in Dallas and Ellis counties in …