Impact of Source Controls on Acid Rain Levels

Abstract

The University of Waterloo Long Range Transport (UW‐LRT) Model is used to simulate the seasonal deposition levels attributable to emissions from Sudbury, Ontario, Central Ohio, and Western Pennsylvania. Recorded deposition data for three receptors are adjusted, reflecting a simulated emission reduction at the three sources. The impact of the reduction is not statistically significant, since the year‐to‐year variability exceeds the changes expected due to emissions reductions. A detailed data‐normalization scheme that incorporates the data from all seasons (and possibly from multiple receptors) is required to provide the statistical “resolutions” necessary to recognize emission changes.