A CONSISTENT SCHEME FOR ESTIMATING DIFFUSIVITIES TO BE USED IN AIR QUALITY MODELS

A vertical diffusivity model consistent with the latest developments in the theory of the atmospheric boundary layer is developed. It considers the Pasquill stability classes, the Monin-Obukhov mixing length, land use and phi-functions. The model constitutes a "cookbook" procedure for estimating vertical diffusivity from easily available meteorology and land use information. A method of interfacing the diffusivity model with grid and trajectory models is discussed. The combination of these models will allow transportation planners and engineers to evaluate the interrelationships of land use, transportation and air quality planning. /FHWA/

  • Supplemental Notes:
    • Sponsored by DOT, Federal Highway Administration.
  • Corporate Authors:

    California Department of Transportation

    Transportation Laboratory
    5900 Folsom Boulevard
    Sacramento, CA  USA  95819
  • Authors:
    • Myrup, L O
    • Ranzieri, A J
  • Publication Date: 1976-6

Media Info

  • Pagination: 73 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00165727
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-CA-76-32 Intrm Rpt., FCP 43F3132
  • Contract Numbers: A-8-27
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Mar 7 1978 12:00AM