Showing papers on "Air pollutant concentrations published in 1985"
01 Jan 1985
TL;DR: The most common tools for this purpose are the most common mathematical air pollution models, which have been applied for several decades, and within this period of time, much effort has been spent on making these models more reliable as discussed by the authors.
Abstract: Control of present air pollution, as well as evaluation of future air quality, requires the ability to predict the level of air pollution generated by present and planned sources of emission. Mathematical air pollution models are the most common tools for this purpose. Such models have now been applied for several decades, and within this period of time, much effort has been spent on making these models more reliable. In spite of our growing understanding of the mechanisms governing the dispersion of pollutants in the atmosphere, the models are still to a high degree based on empirical methods.
7 citations
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TL;DR: In parallel with the Clean Water Act, the Clean Air Act and its amendments have established standards relating to the reduction of air pollution emissions from existing and new sources of pollution as discussed by the authors.
Abstract: In parallel with the Clean Water Act, the Clean Air Act and its amendments have established standards relating to the reduction of air pollution emissions from existing and new sources. Regulations exist for many pollutants but much of the research and impact simulation has focused on six major pollutants: sulfur oxides, particularly SO2; nitrogen oxides, including NO2, NO3 and others; total suspended particulates or TSP; hydrocarbons (HC); carbon monoxide (CO); and photochemical oxidants, particularly ozone. The Clean Air Regulations are rather complex, involving a number of different standards as well as multiple approvals for new sources of air pollution. It might be useful to give a brief overview of these regulations since the models used to describe air pollution impacts are so heavily influenced by them. Following this review, the basic theories behind the air pollution models will be discussed and followed by specific model reviews.
3 citations
01 Jan 1985
TL;DR: The impact of precursor emissions on oxidant formation in the atmosphere may in principle be assessed on the basis of emission inventories, and a correlation must be found between emission rates and ambient air concentrations of precursors.
Abstract: The impact of precursor emissions on oxidant formation in the atmosphere may in principle be assessed on the basis of emission inventories. In the assessment, a correlation must be found between emission rates and ambient air concentrations of precursors, which depend on transport, dispersion, and chemical conversion of the precursors in the atmosphere.
1 citations