application of an emission inventory gis-based tool … of an emission inventory gis-based tool...
TRANSCRIPT
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Application of anEmission Inventory GIS-Based Tool Across the Michigan/Ontario Border
Michael Van Altena, J. Wayne Boulton,Sarah Pellatt and Mike LepageRWDI AIR Inc.Guelph, Ontario, Canada
Rebecca Lee ToolyUS EPA (Air Quality Assessment Division),Research Triangle Park, NC, USA
16th Annual International Emission Inventory ConferenceEmission Inventories: Integration, Analysis, Communication
GIS Assisted EI DevelopmentRaleigh, North Carolina
May 15–17, 2007
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Introduction
Present the application of an Emission Inventory GIS-based software system (EIGIS) across an area containing Detroit, Michigan and south-western Ontario.
Goal: Determine how EIGIS could be used to improve the current emission inventories for transboundary modelling applications.
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Background
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EIGIS is a software system that computes emission inventories for area and mobile sources using a bottom-up (attribute layer) approach.
Developed under a multi-phase contract for Environment Canada to aid in the computation of national emission inventories.
Based upon ESRI ArcGIS technology.
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BackgroundWhy?
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In modelling, the spatial allocation of emissions can be as important as the emission themselves.Emission processors (e.g., SMOKE), convert national EIs into hourly, spatially allocated (gridded) emissions.AQ models (e.g., CMAQ) replicate the transport and chemical transformation of pollutants emitted to the atmosphere.These models are only as good as their inputs!
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Background
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Work performed under two independent projects that shared a number of common goals.US EPA: evaluate different means of computing emissions, with a 2002 NEI benchmark, in three source sectors and 10 counties in Detroit area.Environment Canada: assess and improve existing, provincially aggregated 2002 CAC EI for seven sectors and 6 census divisions in SW Ontario.
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Current TechniquesSouth-Western Ontario
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Asphalt PlantsFerrous Non-Ferrous FoundriesIndustrial and commercial boilersCommercial wood burningAgricultural burningResidential garbage burning Garbage burning at landfills
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Current TechniquesDetroit Metropolitan Area
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Residential Wood CombustionFireplaces and woodstoves
Industrial Fuel Combustion – CoalIndustrial coal burning of anthracite and bituminous/sub-bituminous coals
CharbroilingMeat cooking at commercial restaurants
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EIGIS Methodology(Detroit Specific)
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Concentrate on Detroit…Step 1: Obtain GIS DataStep 2: Obtain Activity DataStep 3: Obtain Emission FactorsStep 4: Input into EIGISStep 5: Have EIGIS Compute the EIStep 6: Plot EI in EIGIS for QAStep 7: Export to Model-ready Input Files
(SMOKE ORL format)
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EIGIS MethodologyGIS Data
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EIGIS MethodologyActivity Data
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EIGIS MethodologyEmission Factors
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EIGIS MethodologyInput into EIGIS
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EIGIS MethodologyCompute the EI
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EIGIS MethodologyPlot EI in EIGIS
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EIGIS MethodologyExport to Model-ready Input Files
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EIGIS MethodologyExport to Model-ready Input Files
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Conclusions
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EIGIS easily adopted in the US - no code changes!EIGIS is effective for both high-resolution bottom-up and simple top-down techniques.EIGIS is effective for automating the calculation and exporting of emissions into SMOKE model-ready input files (IDA or ORL).Mapping feature a useful QA tool within EIGIS.Emissions could be further improved by incorporating higher resolution land use information with a larger number of land use types.
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Ideas for the Future
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Phase III (ongoing development…)Incorporate pre-computed point sourcesTest more robust distributed environmentsMore post-processing / analysis toolsNational EI calculations (pre-populated)Integrated reconciliation functionality
Additional testing for different geographiesTest ability to improve emission estimates by incorporating higher resolution land use data with a larger number of land use types
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Acknowledgments
www.rwdi.com
• ESRI Canada• U.S. EPA, Emission Inventory Group• Environment Canada, Pollution Data Division• Environment Canada, Pacific & Yukon Region • Greater Vancouver Regional District• BC Ministry of Environment