Quantifying the sources of ozone, fine particulate matter, and regional haze in the Southeastern United States

Odman M. T., Hu Y., Russell A. G., Hanedar A., Boylan J. W., Brewer P. F.

JOURNAL OF ENVIRONMENTAL MANAGEMENT, vol.90, no.10, pp.3155-3168, 2009 (SCI-Expanded) identifier identifier identifier


A detailed sensitivity analysis was conducted to quantify the contributions of various emission sources to ozone (03), fine particulate matter (PM2.5), and regional haze in the Southeastern United States. 03 and particulate matter (PM) levels were estimated using the Community Multiscale Air Quality (CMAQ) modeling system and light extinction values were calculated from modeled PM concentrations. First, the base case was established using the emission projections for the year 2009. Then, in each model run, SO2, primary carbon (PC), NH3, NOx or VOC emissions from a particular source category in a certain geographic area were reduced by 30% and the responses were determined by calculating the difference between the results of the reduced emission case and the base case.