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Background Ozone Trends in the Eastern United States
by
George Antczak
NC State University
Coauthors: Adrienne Wootten
Tropospheric or ground-level ozone trends are often used to determine the impacts of emissions control strategies across the country. The major precursors to ground-level ozone formation are volatile organic compounds (VOCs) and nitrous-oxides (NOx). The EPA Nitrogen Oxides State Implementation Plan Call (NOx SIP Call) began in 2001 in an effort to mitigate the formation of ground-level ozone. Since ozone is strongly affected by the influence of meteorological variables, many different approaches have been taken to determine the trend in ozone by removing the effects of varying meteorology. The purpose of this project was to build a time series model that removes the effects of meteorology, autocorrelation, and seasonal trends. This data spans April through October of 1997-2006 for the measuring sites in the States of Maryland, New Jersey, North Carolina and Washington D.C. The result of our analysis is a series of models that estimate the reduction in ground-level ozone over this ten year period.
Date received: September 7, 2007
Copyright © 2007 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Conferences Inc. Document # cavm-59.