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For airport applications, the typical AERMOD input requirements and their corresponding data parameters are listed in Table 7-1 ( AERMOD Model Inputs and Data Requirements ). 

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When dispersion modeling is conducted at airports for the EPA criteria pollutants, CO, NO $_{2}$, PM$_{10}$, and PM 2.5 are most commonly evaluated. Characteristically, CO levels are typically elevated in areas of high motor vehicle traffic such as the main terminal area access/egress roadways, curbsides and parking facilities. By comparison, NO $_{2 }$concentrations are also more likely to be highest near the runway ends where aircraft engine thrust settings are at their highest. 

