CALINE 2 - AN IMPROVED MICROSCALE MODEL FOR THE DISPERSION OF AIR POLLUTANTS FROM A LINE SOURCE

In order for transportation planners and engineers to evaluate the air quality impact of a proposed project, mathematical means are required to describe the dispersion of air pollutants from a line source. CALINE2, the California Line Source Dispersion Model, is presented and discussed as one such mathematical approach. CALINE2 is based on the generalized Gaussian dispersion theory, and simulates the dispersion of carbon monoxide from a uniform line source. A sensitivity analysis of the model relates the behavior of its predictions as a function of the input parameters. A preliminary verification study using carbon monoxide data from the Los Angeles region gives the user an estimate of CALINE2's predictive capabilities. An earlier version of the model, which was distributed nationwide in 1972, is compared with the present version.

• Supplemental Notes:
  • See also mag tape, PB-271 105 and User's Manual, PB-271 106.
• Corporate Authors:

  California Department of Transportation

  Transportation Laboratory
  5900 Folsom Boulevard
  Sacramento, CA  United States  95819

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Ward, C E
  • Ranzieri, A J
  • Shirley, E C
• Publication Date: 1977-6

Media Info

• Pagination: 111 p.

Subject/Index Terms

• TRT Terms: Air pollution; Alternatives analysis; Atmospheric diffusion; Carbon dioxide; Carbon monoxide; Computer programs; Concentration (Chemistry); Environmental impacts; Exhaust gases; Forecasting; Highways; Impact studies; Mathematical models; Numerical analysis; Simulation; Velocity; Wind
• Old TRIS Terms: Air pollution forecasting; Dispersion; Wind velocity
• Subject Areas: Design; Environment; Highways; Railroads;

Filing Info

• Accession Number: 00169753
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FHWA-RD-77- 74 Intrm Rpt., CA-DOTTL-7218-1-7623, FCP 33F3-032
• Contract Numbers: OT-FH-11-7730
• Files: NTIS, TRIS, USDOT, STATEDOT
• Created Date: Mar 14 1978 12:00AM