Emissions and air quality trends in the South Coast Air Basin

Conference · Thu Jan 01 04:00:00 EST 1976

OSTI ID:7364300

Trijonis, J C; Peng, T K; McRae, G J; Lees, L

The report documents the historical trends of pollutant emissions and ambient air quality for the South Coast Air Basin (SCAB) for the period 1965-1974. Emission trends for nitrogen oxides, reactive hydrocarbons, and carbon monoxide are developed. A detailed appendix describes the methodology and presents the latest test information--in particular the contribution of evaporative emissions from light-duty vehicles. Basin-wide and county trends are presented to characterize the overall changes as well as the spatial distribution of emissions. Ambient concentrations of total nitrogen oxides (NO/sub x/), nitrogen dioxide (NO/sub 2/), oxidant (OX), and carbon monoxide (CO) are compared to the emissions changes during the same period. Detailed analyses of air quality indices, including extreme levels, average values, and frequency of standard violation are presented for each pollutant. The final section of the paper discusses current and proposed control strategies and their impact on future air quality.

• Research Organization: California Inst. of Tech., Pasadena (USA). Environmental Quality Lab.
• OSTI ID: 7364300
• Report Number(s): EQL-Memo-16; CONF-751236-1
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR
AIR POLLUTION
AIR QUALITY
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COASTAL REGIONS
CONTROL
DISTRIBUTION
EMISSION
ENVIRONMENTAL EFFECTS
EXHAUST GASES
FLUIDS
GASEOUS WASTES
GASES
HYDROCARBONS
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION
SPATIAL DISTRIBUTION
VEHICLES
WASTES