Evaluation of roadway pollutant dispersion models using mass flux profiles and mass conservation

Journal Article · Thu Apr 01 04:00:00 EST 1982 · Environ. Sci. Technol.; (United States)

DOI:https://doi.org/10.1021/es00098a006· OSTI ID:5435173

Green, N J ^[1]; Bullin, J A

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1. Monsanto Textiles Co., Decatur, AL

Currently air quality models are used to predict the pollutant dispersion from vehicular traffic on roadways. Four roadway dispersion models (CALINE-2, HIWAY, AIRPOL-4, and TRAPS IIM) were evaluated by using experimental mass flux profiles and mass conservation checks. The shapes of the predicted and experimental mass flux profiles agreed for only one model. Several current roadway dispersion models are shown to be inaccurate because they neglect change in wind speed with height and because they incorrectly represent transport processes when the wind angle to the roadway differs from 90/sup 0/.

• OSTI ID: 5435173
• Journal Information: Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 16:4; ISSN ESTHA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
AIR POLLUTION CONTROL
AIR QUALITY
CONTROL
DIFFUSION
ENVIRONMENTAL QUALITY
ENVIRONMENTAL TRANSPORT
MASS TRANSFER
MATHEMATICAL MODELS
POLLUTION
POLLUTION CONTROL
ROADS
VEHICLES