Emission Reductions Needed to Meet the Standard for Ozone in Southern California: Effect of Boundary Conditions

Combinations of total reactive organic gas (ROG) and nitrogen oxide (NOₓ) emissions that do not exceed the National Ambient Air Quality Standard (NAAQS) for ozone for the meteorological conditions of the August 26-28, 1987 SCAQS episode, have been determined using the California Institute of Technology (CIT) photochemical air quality model. The sensitivity of these combinations to pollutant boundary conditions is examined.