Effect of NO/sub x/ emission rates on smog formation in the California south coast air basin
The effect of changes in NO/sub x/ emissions on downwind regions of the California south coast air basin was investigated with th elstar trajectory model. Smog formation was simulated in air parcels which originated near Los Angeles in the early morning, passes through the San Gabriel Valley, and arrived at or near San Bernardino in the mid to late afternoon on days of moderate to high ozone. With nonvehicular emissions held fixed at the 1973 levels, the planned reduction in motor vehicle emissions is predicted to result in reduced atmospheric concentrations of CO, NO, NO/sub 2/, O/sub 3/, pan, and HNO/sub 3/ along the air parcel trajectories. However, when the hydrocarbon emissions are held fixed at a projected future level, a decrease in NO/sub x/ emissions will result in a decrease in NO/sub 2/ concentrations, but an increase in O/sub 3/ and pan concentrations at all positions along the trajectories.
- OSTI ID:
- 5664378
- Journal Information:
- Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 15:8; ISSN ESTHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
AIR POLLUTION CONTROL
CALIFORNIA
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CONTROL
ECOLOGICAL CONCENTRATION
FEDERAL REGION IX
HYDROGEN COMPOUNDS
INORGANIC ACIDS
NITRIC ACID
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
OZONE
POLLUTION
POLLUTION CONTROL
SIMULATION
SMOG
TRAJECTORIES
USA