Record Display for the EPA National Library Catalog

RECORD NUMBER: 253 OF 630

OLS Field Name OLS Field Data
Main Title Evaluating O3 Predictions from a Test Application of the EPA Regional Oxidant Model.
Author Schere, K. L. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Year Published 1986
Report Number EPA/600/D-86/221;
Stock Number PB87-104642
Additional Subjects Ozone ; Air pollution ; Atmospheric chemistry ; Mathematical models ; Concentration(Composition) ; Plumes ; EPA regional oxidant model ; Northeast Regional Oxidant Study ; Air quality
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB87-104642 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 8p
Abstract
The first generation U.S. EPA Regional Oxidant Model (ROM1) has been tested and evaluated for O3 predictions on a two-day test case episode (3-4 August 1979) in the Northeast Regional Oxidant Study (NEROS) area. The two-day episode was characterized by relatively high O3 concentrations in the southern Great Lakes area where clear skies persisted. Intermittent periods of relatively high O3 levels existed near some of the eastern seaboard cities where partly cloudy skies alternated with clouds and showers in the vicinity of a stationary frontal zone. Model evaluation results for O3 are presented in two stages. First an analysis of model predictions at all hours of the simulation for all surface monitoring site locations is performed. Results show an average underprediction of only a few percent. In the second stage, an analysis of the ability of the ROM1 to predict daily maximum concentrations, two aspects are considered in the evaluation analysis. First, the maximum O3 concentrations at monitoring station locations are paired with the corresponding model predictions. Second, the model predictions are analyzed for individual urban emissions source-area plumes.