Temporal and spatial distribution of biogenic emissions of isoprene based on an inverse method using ambient isoprene observations from the 1992 southern oxidants study, Atlanta intensive
- Georgia Institute of Technology, Atlanta, GA (United States)
During the summer months, ambient hydrocarbons may react with airborne oxides of nitrogen to generate enough ozone to violate the National Ambient Air Quality Standard. In order to understand how ozone is formed and to develop strategies to reduce it, scientists must understand and quantify its precursors. In Atlanta, GA, it is currently estimated that biogenic hydrocarbon emissions contribute over 50% of the total atmospheric hydrocarbon loading despite substantial anthropogenic activity. However when using the Biogenic Emissions Inventory System (BEIS), the Urban Airshed Model (UAM) underpredicts ambient isoprene concentrations by {approximately}85% when compared to ambient observations from the Southern Oxidants Study (SOS) 1992 Atlanta Intensive. When using the second generation Biogenic Emissions Inventory System (BEIS2), the UAM still underpredicts isoprene concentrations {approximately}30%. In this study, an inverse method based on the Kalman Filter is used to develop a biogenic isoprene emission inventory for Atlanta which minimizes the error between predicted and observed isoprene concentrations The resultant biogenic isoprene emissions are estimated to be {approximately}15 times higher than BEIS emissions and {approximately}3 times higher than the BEIS2 inventory. The impact of these higher isoprene emissions on ozone and on the control strategies for ozone is also discussed.
- OSTI ID:
- 618006
- Report Number(s):
- CONF-9609223-; TRN: 98:002008-0092
- Resource Relation:
- Conference: Conference on emission inventory: key to planning, permits, compliance and reporting, New Orleans, LA (United States), 4-6 Sep 1996; Other Information: PBD: 1996; Related Information: Is Part Of The emission inventory: Key to planning, permits, compliance, and reporting; PB: 1047 p.
- Country of Publication:
- United States
- Language:
- English
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