Background and development of the CALINE 3 line source dispersion model. Interim report
A brief description of the theoretical considerations and limitations behind the Gaussian line source dispersion model, CALINE3, is given. A history of the development of the Gaussian method is discussed along with a review of current literature on the subject with particular reference to near-roadway applications. Descriptions of the experimental studies which provided the basis for development of CALINE3 are also given. Analyses of the results from these studies are presented in two sections, one dealing with meteorological effects, and the other with characterization of Gaussian dispersion parameters near roadways. The findings indicate that the vertical distribution of vehicular emissions at the roadway edge can be adequately described by a Gaussian distribution, and that the height of this initial vertical spread is positively correlated with emissions residence time over the roadway. The effects of vehicle induced turbulence are studied in terms of upwind and downwind measures of several micrometeorological parameters. The conclusion that vehicle induced turbulence is a significant effect for cases of neutral to stable atmospheric conditions is reached.
- Research Organization:
- California State Dept. of Transportation, Sacramento (USA). Transportation Lab.
- OSTI ID:
- 5876729
- Report Number(s):
- PB-81-227811
- Country of Publication:
- United States
- Language:
- English
Similar Records
Validation of the caline 2 model using other data bases (type b study). Final report, December 1977-January 1979
Final Report for the Joint Urban 2003 Atmospheric Dispersion Study in Oklahoma City: Lawrence Livermore National Laboratory participation