EXAMINATION OF REGIONAL PHOTOCHEMICAL MODELS BY A USER

This discussion (from the user's point of view) of the applications of regional photochemical models to assess the interrelations of land use, transportation, and air quality planning, covers the problems with using existing emission and aerometric data and presents solutions to remedy these problems. Institutional constraints to running computer simulation models on various computer systems are discussed as well as the advantages and limitations of trajectory and grid models for transportation systems analyses. Input to regional photochemical models include emission inventories (both mobile and stationary sources), meteorology, and the initial hour of air quality data through the region so that the model can simulate the transport and diffusion of the emission fluxes while it attempts to duplicate the chemical reactions that occur in the atmosphere. Air quality data are also required so that predictions can be compared with real world observations. Problems with using existing air quality data bases are discussed with reference to definition of grid boundaries or study region, emission inventory, existing meteorological and air quality data bases, verification of photo chemical models customizing regional models for urban areas, and institutional constraints. The implementation of urban air quality models is discussed.

• Record URL:
  • https://onlinepubs.trb.org/Onlinepubs/sr/sr167/167-007.pdf
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0360859X
• Supplemental Notes:
  • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved. Presented at the Conference on the State of the Art of Assessing Transportation-Related Air Quality Impacts, Washington, D.C. October 22-24, 1975.
• Corporate Authors:

  Transportation Research Board (TRB)

  Washington, DC   
• Authors:
  • Ranzieri, Andrew J
  • Shirely, Earl C
• Discussers:
  • Eschenroeder, Alan
• Conference:
  • Conference on the State of the Art of Assessing Transportation-Related Air Quality Impacts
  • Location: Washington District of Columbia, United States
  • Date: 1975-10-22 to 1975-10-24
• Publication Date: 1976

Media Info

• Media Type: Digital/other
• Features: Figures; References;
• Pagination: pp 75-92
• Monograph Title: Assessing transportation-related air quality impacts
• Serial:
  • Transportation Research Board Special Report
  • Issue Number: 167
  • Publisher: Transportation Research Board
  • ISSN: 0360-859X

Subject/Index Terms

• TRT Terms: Air pollution; Cartographic grids; Chemical reactions; Databases; Exhaust gases; Forecasting; Grids (Transmission lines); Inventory; Land use; Mathematical models; Meteorological phenomena; Needs assessment; Organizations; Photochemistry; Simulation; Trajectory; Transportation planning; Urban areas; Vehicle trajectories
• Uncontrolled Terms: Institutions; Models; User needs
• Old TRIS Terms: Meteorological data
• Subject Areas: Administration and Management; Design; Freight Transportation; Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00139653
• Record Type: Publication
• Files: TRIS, TRB, ATRI
• Created Date: Sep 16 1976 12:00AM