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 United States 95819 -
Authors:
- Myrup, L O
- Ranzieri, A J
- Publication Date: 1976-6
Media Info
- Pagination: 73 p.
Subject/Index Terms
- TRT Terms: Air pollution; Boundary layer; Diffusivity; Land use; Mathematical models; Transportation planning
- Uncontrolled Terms: Models
- Subject Areas: Economics; Highways; Society;
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