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Modeling and Direct Sensitivity Analysis of Biogenic Emissions Impacts on Regional Ozone Formation in the Mexico-U.S. Border Area
| Content Provider | Scilit |
|---|---|
| Author | Mendoza-Dominguez, Alberto Wilkinson, James G. Yang, Yueh-Jiun Russell, Armistead G. Mendoza, Alberto |
| Copyright Year | 2000 |
| Description | A spatially and temporally resolved biogenic hydrocarbon and nitrogen oxides (NOx) emissions inventory has been developed for a region along the Mexico-U.S. border area. Average daily biogenic non-methane organic gases (NMOG) emissions for the 1700 x 1000 km2 domain were estimated at 23,800 metric tons/day (62% from Mexico and 38% from the United States), and biogenic NOx was estimated at 1230 metric tons/day (54% from Mexico and 46% from the United States) for the July 18-20, 1993, ozone episode. The biogenic NMOG represented 74% of the total NMOG emissions, and biogenic NOx was 14% of the total NOx. The CIT photochemical airshed model was used to assess how biogenic emissions impact air quality. Predicted ground-level ozone increased by 5-10 ppb in most rural areas, 10-20 ppb near urban centers, and 20-30 ppb immediately downwind of the urban centers compared to simulations in which only anthropogenic emissions were used. A sensitivity analysis of predicted ozone concentration to emissions was performed using the decoupled direct method for three dimensional air quality models (DDM-3D). The highest positive sensitivity of ground-level ozone concentration to biogenic volatile organic compound (VOC) emissions (i.e., increasing biogenic VOC emissions results in increasing ozone concentrations) was predicted to be in locations with high NOx levels, (i.e., the urban areas). One urban center--Houston--was predicted to have a slight negative sensitivity to biogenic NO emissions (i.e., increasing biogenic NO emissions results in decreasing local ozone concentrations). The highest sensitivities of ozone concentrations to on-road mobile source VOC emissions, all positive, were mainly in the urban areas. The highest sensitivities of ozone concentrations to on-road mobile source NOx emissions were predicted in both urban (either positive or negative sensitivities) and rural (positive sensitivities) locations. |
| Related Links | http://www.tandfonline.com/doi/pdf/10.1080/10473289.2000.10463987?needAccess=true |
| Ending Page | 31 |
| Page Count | 11 |
| Starting Page | 21 |
| ISSN | 10962247 |
| e-ISSN | 21622906 |
| DOI | 10.1080/10473289.2000.10463987 |
| Journal | Journal of the Air & Waste Management Association |
| Issue Number | 1 |
| Volume Number | 50 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2000-01-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of the Air & Waste Management Association Environmental Engineering Sensitivity Analysis Biogenic Emissions Ozone Models Nox Ppb Emissions Impact Nmog Positive Sensitivity |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atmospheric Science Pollution Waste Management and Disposal Management, Monitoring, Policy and Law |
