Abstract
Air quality model simulations are performed and evaluated for Houston using the Community Multiscale Air Quality (CMAQ) model. The simulations use two different emissions estimates: the EPA 2005 National Emissions Inventory (NEI) and the Texas Commission on Environmental Quality (TCEQ) Emissions Inventory. A comparison of predictions with observed data from the 2006 TexAQS-II Radical and Aerosol Measurement Project (TRAMP) suggest that while the predicted oxides of nitrogen are greater than observations, predicted volatile organics (e.g., ethane, acetone) are substantially lower than the observations. Predicted hydroxyl radical predictions are in good agreement with the observations. Hydroperoxy radical predictions, however, are substantially lower than the observations.
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