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NARSTO Workshop on Innovative Methods for Emission Inventory Development and Evaluation University of Texas, Austin October 14-17, 2003 |
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Improved Methods of Developing Biogenic Emissions Inventories
Mark Estes, Jim Smith, and Fernando Mercado
Texas Commission on Environmental Quality
Biogenic emissions were simulated during a severe ozone episode in August-September 2000 using an advanced emissions model, GloBEIS3. This model corrects some problems in earlier modeling systems, and adds new features that allow greater testing of emission sensitivities. Biogenic emissions modeling requires large-scale fields of photosynthetically-active solar radiation temperature, and other parameters in order calculate emissions. Satellite data analysis and mesoscale monitoring network data were used to develop the required fields. The photosynthetically-active solar radiation data were derived from GOES8 data, and yielded data fields of 4km x 4km resolution. Temperature data fields were created by applying kriging techniques to urban, rural, coastal, and buoy meteorological data. The modeling results were compared to available data from routine monitoring and to TexAQS 2000 data to determine how accurately the model simulated the observations.