MORNING VEHICLE-START EFFECTS ON PHOTOCHEMICAL SMOG

THE INFLUENCE OF COLD-START VEHICLE EMISSIONS ON AIR QUALITY IS INVESTIGATED USING A PHOTOCHEMICAL/DIFFUSION MODEL. BOTH THE TIME AND SPACE DISTRIBUTION OF COLD STARTS ARE EXAMINED. A DAY FROM AN OCTOBER 1968 LOS ANGELES SMOG EPISODE SERVES AS A BASELINE FOR DETERMINING METEOROLOGICAL AND CHEMICAL PARAMETERS FOR THE MODEL. COLD-START EMISSIONS ARE FOUND TO INCREASE CO PEAK CONCENTRATIONS FROM 9-13 PERCENT WHILE INCREASES IN OZONE AND NITROGEN DIOXIDE ARE PRACTICALLY INSIGNIFICANT. DECENTRALIZING THE STARTS GEOGRAPHICALLY PRODUCED NO SIGNIFICANT DIFFERENCES FROM THE CASE OF UNIFORMLY DISTRIBUTED STARTS, EITHER IN POLLUTANT LOADING OR IN AIR QUALITY. /AUTHOR/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0013936X
• Corporate Authors:

  American Chemical Society

  1155 16th Street, NW
  Washington, DC  United States  20036
• Authors:
  • Martinez, J R
  • Nordsieck, R A
  • ESCHENROEDER, A Q
• Publication Date: 1973-10

Media Info

• Pagination: p. 917-23
• Serial:
  • Environmental Science & Technology
  • Volume: 7 N1
  • Publisher: American Chemical Society
  • ISSN: 0013-936X
  • EISSN: 1520-5851
  • Serial URL: http://pubs.acs.org/journal/esthag

Subject/Index Terms

• TRT Terms: Air pollution; Carbon monoxide; Chemical agents; Cold weather; Diffusion (Optics); Mathematical models; Meteorological phenomena; Nitrogen compounds; Operations; Ozone; Photochemistry; Pollutants; Smog; Starting (Driving); Vehicles
• Uncontrolled Terms: Models; Starting
• Old TRIS Terms: Meteorological data
• Subject Areas: Administration and Management; Highways; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00224494
• Record Type: Publication
• Files: TRIS
• Created Date: May 15 1974 12:00AM