Open AccessTrends in visibility, PM{sub 2.5}, and deposition expected from the Acid Rain Provisions of the 1990 Clean Air Act Amendments
Author(s) -
J.D. Shan,
D.A. Hanson
Publication year - 1997
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/634026
Subject(s) - clean air act , visibility , acid deposition , acid rain , sulfate , deposition (geology) , environmental science , air pollution , meteorology , atmospheric sciences , pollution , nitrate , environmental engineering , hydrology (agriculture) , geography , chemistry , soil science , engineering , paleontology , ecology , organic chemistry , sediment , biology , geology , soil water , geotechnical engineering
The Acid Rain Provisions (Title IV) of the 1990 Clean Air Act Amendments (CAAA) are designed to reduce the deposition of SO{sub 2} and sulfate and, to a lesser extent, the deposition of NO{sub x} and nitrate through reduction of SO{sub 2} and NO{sub x} emissions. However, other important benefits are anticipated from the emission control strategies, including improvement of regional visibility and reductions in concentrations of fine particles (PM2.5). In this study, the authors coupled utility emissions forecasts with the Advanced Statistical Trajectory Regional Air Pollution (ASTRAP) model and the Visibility Assessment Scoping Model (VASM) to calculate and compare the relative improvements by 2010 in visual impairment, PM2.5 concentrations, and sulfate wet deposition at selected sites in the eastern United States
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