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Emissions Inventory Development and Processing for the Seasonal Model for Regional Air Quality

By Marc R. Houyoux and Jeffrey M. Vukovich


The Seasonal Model for Regional Air Quality (SMRAQ) project is an effort to model ozone formation and transport from May to September of 1995 for the eastern two-thirds of the continental United States using a 36-km grid resolution. The emissions inventory was derived from the 1990 and 1995 Ozone Transport Assessment Group (OTAG) inventories. This paper describes the experiences and insight gained from inventory preparation and emissions processing for the SMRAQ project. The OTAG biogenic inventory and area-, mobile-, and point-source inventories all have been updated to some extent for use in SMRAQ; the changes to point sources were the most extensive. Changes included new gridded biogenic land use data, updated mobile-source vehicle-miles-traveled and speeds, prognostic meteorology, and updated 1990-to-1995 point-source projections with modifications based on the Continuous Emissions Monitoring data. The magnitude and seasonal variation of the resulting emissions are presented and di..

Year: 1998
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