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.

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 75-92
  • Monograph Title: Assessing transportation-related air quality impacts
  • Serial:

Subject/Index Terms

Filing Info

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