The Selection and Calibration of Air Quality Diffusion Models for Washington State Highway Line Sources: A Study

At the request of the Washington State Department of Highways a study was conducted to evaluate three computer models specifically designed to predict carbon monoxide (CO) concentration at receptor points along roadways. The models were evaluated on their ability to predict values obtained from a monitoring network established along various roadways in the State of Washington. Monitoring consisted of 12 ground level CO stations, 2 meteorological stations and traffic counters. Traffic speeds were sampled for conformity during peak hours. The final selected models, CALINE II and EPA's HIWAY, were given calibration factors to be used when calculating Receptor Concentrations for Impact Assessments.

Publication Date: 
Monday, March 1, 1976
Publication Number: 
WA-RD 012.2
Last modified: 
11/17/2017 - 11:25
Franklin I. Badgley, August T. Rossano, David Lutrick, Hal Alsid.
University of Washington. Dept. of Atmospheric Sciences, University of Washington. Dept. of Civil Engineering.
Number of Pages: 
Air pollution, Air quality, Atmospheric diffusion, Calibration, Carbon monoxide, Environmental impacts, Mathematical prediction, Monitoring, Simulation, Traffic counting, Traffic speed.