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M. Talat Odman, Yongtao Hu, Alper Unal, Armistead G. Russell, and James W. Boylan

case and another with reduced emission inputs. This method is known as the “brute force” method ( Hwang et al. 1997 ). The model used here to simulate the air quality is the Community Multiscale Air Quality (CMAQ) model ( Byun and Ching 1999 ). Brute-force sensitivity analysis has been widely used to aid the design of control strategies for ozone. For example, recently, Marr and Harley (2002) studied the impact of motor vehicle emissions on ozone levels in central California using the California

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Edith Gégo, P. Steven Porter, Alice Gilliland, and S. Trivikrama Rao

. Synoptic-scale variation in met-adj. ozone (characterized by the standard deviation) decreased at all but 2 of the 33 monitoring sites in the study region between the pre– and post–SIP Call ozone seasons ( Fig. 5 ). These observation-based results corroborate the model-based results of Hogrefe et al. (2000) that the SIP Call has indeed affected the energy content of the synoptic-scale forcing in ozone, reflecting the influence of the long-range transport of ozone pollution. c. Changes in the

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John S. Irwin, William B. Petersen, and Steven C. Howard

the statistics for each experiment. The “near-surface simple” group consists of PG, Round Hill, Hanford-30, Green Glow I, and Hanford-67 (near Richland, Washington) and involves releases at or below 2 m in nearly flat terrain with steady-state meteorological conditions. The “near-surface complex” group is Green Glow II, Ocean Breeze (Cape Canaveral, Florida), and Dry Gulch (Vandenberg Air Force Base, California) and involves releases at or below 2 m in complex nonsteady meteorological conditions

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George Kallos, Marina Astitha, Petros Katsafados, and Chris Spyrou

. Environ. , 37 , S21 – S39 . Prospero , J. M. , I. Olmez , and M. Ames , 2001 : Al and Fe in PM 2.5 and PM 10 suspended particles in South-Central Florida: The impact of the long range transport of African mineral dust. Water Air Soil Pollut. , 125 , 291 – 317 . Ramanathan , V. , and Coauthors , 2001 : Indian Ocean Experiment: An integrated analysis of the climate forcing and effects of the great Indo-Asian haze. J. Geophys. Res. , 106 , 28371 – 28398 . Rodriguez , S. , X

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