Interim evaluation of strategies for meeting ambient air quality standard for photochemical oxidant

Reynolds, Steven D.; Seinfeld, John H.

doi:10.1021/es60103a001

Cited by 4 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To make the formulation specific to our interests, a functional form for f(x,y) must be determined. In an attempt to obtain the best second-order polynomial in x and y approximating / for the region in Figure 3 covered by the dash-and-dot curves, the following linear form was found to be sufficiently accurate f(x,y) = C0 + axx + bxy (3) with c0 = 5.535, ! = 13.21, and bx = -2.56.…”

Section: Formulation Of the Problemmentioning

confidence: 99%

“…The determination of hydrocarbon and nitrogen oxide emission reduction levels needed to meet National Ambient Air Quality Standards (NAAQS) for ozone and nitrogen dioxide in major urban areas is a central problem in implementing the Federal Clean Air Act (1)(2)(3)(4). The problem involves two major aspects, determining the relationship between hydrocarbon and nitrogen oxide (NO*) emissions and ozone (03) and nitrogen dioxide (N02) air quality and identifying available emission control measures.…”

Section: Introductionmentioning

confidence: 99%

“…Diesel particulates are mostly of respirable size (1) and may constitute a significant inhalation health hazard to the human population. Recent studies utilizing the Ames Salmonella mutagenesis assay and other short-term bioassay methods have indicated that organic extracts of these particulates possess significant mutagenic activity (3,4) even in the absence of mammalian enzymes. These findings have stimulated an intensive research effort to identify mutagens in diesel particulates.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimal emission control strategies for photochemical smog

Costanza¹,

Seinfeld²

1982

Environ. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

A study of certain aspects of the selection of reactive hydrocarbon and nitrogen oxide emission reductions for photochemical oxidant abatement is carried out. Optimal emission control paths are defined as those minimizing a total cost function consisting of control cost and ozone dosage contributions. Los Angeles County ozone air quality and control cost data are used to formulate an optimal emission reduction path. The analysis is presented primarily to provide insight into the factors involved in designing oxidant control strategies.

show abstract

Section: Formulation Of the Problemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimal emission control strategies for photochemical smog

Costanza¹,

Seinfeld²

1982

Environ. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…3D Eulerian air quality model calculations were performed for September[23][24][25] 1996 within the region surrounding Los Angeles, CA. The September 23-25, 1996 time period was chosen for model evaluation in the current study because it represents the most recent episode for which the large amount of data (emissions, meteorology, initial conditions, boundary conditions, receptor site concentrations) needed for air quality model evaluation are available.…”

mentioning

confidence: 99%

A 3D Eulerian Source-Oriented Model for an Externally Mixed Aerosol

Kleeman

Cass

2001

Environ. Sci. Technol.

134

112

View full text Add to dashboard Cite

A 3D Eulerian source-oriented model for an externally mixed aerosol is developed and then used to compute the contribution that different emission sources make to regional fine particle concentrations in the South Coast Air Basin surrounding Los Angeles, CA, on September 25, 1996. The model simultaneously tracks fine particle concentrations (PM2.5), inhalable particle concentrations (PM10), ozone, and other gaseous pollutant concentrations yielding a tool that can be used to study the control of all of the regulated contaminants in the atmosphere within a single unified framework. Model predictions identify geographical areas that are influenced by PM2.5 associated with crustal material other than paved road dust, paved road dust, diesel engines, food cooking, noncatalyst equipped gasoline engines, catalyst-equipped gasoline engines, combustion of high sulfur-content fuel, other primary particle sources, sea salt, and marine background sulfate particles. The contribution that each of these source types makes to regional fine particle concentrations is distinct, reflecting the unique chemical composition, spatial distribution, and diurnal trends of primary emissions. The single largest contribution to regional PM2.5 in the South Coast Air Basin surrounding Los Angeles is associated with the accumulation of secondary ammonium nitrate on background marine sulfate particles. This pattern indicates that control of PM2.5 concentrations in Los Angeles must be accomplished through a program that includes both reductions in the emissions of gaseous precursors of secondary PM2.5 as well as control of primary particle emissions.

show abstract