THE THEORY AND MATHEMATICAL DEVELOPMENT OF AIRPOL-4
This is the first in a series of reports documenting the Virginia Department of Highways & Transportation line source model for predicting carbon monoxide concentrations within the microscale environments of highways. The purpose of this first report is to provide a detailed introduction to and verification of the theoretical development of AIRPOL-4, a true Gaussian formulation enhanced by several theoretical and computational innovations. These innovations establish AIRPOL-4 as a major advancement in the field of air quality modeling. Specifically, the mathematical development of the conceptual aspect of the model demonstrates AIRPOL-4's ability to correctly analyze: 1) receptors upwind of a roadway; 2) all wind speeds equal to or greater than 0; 3) any samping interval; 4) urban environments; 5) all traffic speeds greater than or equal to 0; and 6) at grade, cut, and fill geometries. Furthermore, the algorithmic development of the model firmly establishes AIRPOL-4's position as a very efficient and very accurate model. The second report in this series provides the definitive experimental evidence of AIRPOL-4's predicitive performance and cost effectiveness.
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Corporate Authors:
Virginia Highway and Transportation Research Council
Charlottesville, VA United States -
Authors:
- Carpenter, W A
- Clemena, G G
- Publication Date: 1975-5
Media Info
- Features: Figures; References;
- Pagination: 58 p.
Subject/Index Terms
- TRT Terms: Air quality management; Atmosphere; Carbon monoxide; Mathematical models; Traffic speed; Urban areas; Velocity; Wind
- Old TRIS Terms: Gaussian plume model; Urban atmospheres; Wind velocity
- Subject Areas: Economics; Highways; Safety and Human Factors; Society;
Filing Info
- Accession Number: 00099302
- Record Type: Publication
- Report/Paper Numbers: VHTRC 75-R49
- Files: NTL, TRIS, STATEDOT
- Created Date: Oct 18 1975 12:00AM