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Developing a near real-time regional system for modeling air quality impacts of prescribed fire
16th Annual International Emissions Inventory ConferenceRaleigh, North Carolina
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Cast of characters
US Forest Service− Scott Goodrick (emissions/visualization)
− Gary Achtemeier (plume modeling)
− Yongqiang Liu (CMAQ)
Florida Division of Forestry− Jim Brenner (fire activity data)
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Overview
BackgroundFlorida Fire Management Information System (FMIS)Southern High Resolution Modeling Consortium (SHRMC) Southern Smoke Simulation System (4S) Future
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Background
1998 Interim Air Quality Policy on Wildland and Prescribed FireStates urged to create a smoke management programOther issues such as regional haze have made smoke management plans even more important
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Florida Fire Management Information System
Integral component of Florida's SMPManages almost all aspects of the Florida Division of Forestry's fire businessIntegrates GIS, Oracle database, numerical weather prediction (mm5) and a smoke screening system
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Smoke Management
Primary focus of smoke management directed toward public safety – smoke on the highway
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FMIS Smoke Screening
Prototype smoke screening tool used VsmokeEventually switched to a system combining HySplit trajectories with Vsmoke source strength modelFocus on smoke concentrations (PM2.5) that would cause a visibility hazardUsed for every prescribed fire authorized by the Florida Division of Forestry
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Shift in Smoke Management Focus
Air quality a growing concern as National Ambient Air Quality Standards (NAAQS) are tightened
• Allowable particulate matter emissions nearly cut in half
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SHRMC
One of 5 Fire Consortia for Advanced Modeling of Meteorology and Smoke (FCAMMS) funded by the National Fire PlanFocus on developing weather and smoke products to support fire operationsBegan producing operational products in 2002
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Southern Smoke Simulation System
Designed to assess prescribed fire impacts on air qualityConceptually similar to the BlueSky smoke modeling frameworkUse CMAQ to assess a wider range of air quality impacts than possible with BlueSky
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Southern Smoke Simulation System
Fire Data
Emissions Calculation
SMOKE
CMAQ
Visualization
Weather Data(MM5)
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Partnership
Florida Division of Forestry has a need for air quality informationSHRMC needs fire activity data
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Fire Activity Data
LocationDate / TimeSizeIgnition MethodFuel Type / LoadFuel Moisture
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Importance of Ignition Method
Changes emission factors due to changes in combustion efficiency and variation in percent of fuel consumed during flaming or smoldering phaseImpacts plume buoyancy and structure
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Modeling Prescribed Fire Emissions
0 20 40 60 80 1001
10
100
1000
10000
Backing FireHeading Fire
Downwind Distance (km)
TSP
Con
cent
rati
on
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Modeling Prescribed Fire Emissions
0 20 40 60 80 1001
10
100
1000
10000
100000
Backing FireHeading Fire-CLHeading Fire-NCLTotal Head Fire
Downwind Distance (km)
TSP
Con
cent
rati
on
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Plume Modeling
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CMAQ Forecasts
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CMAQ Forecasts
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CMAQ Forecasts
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CMAQ Forecasts
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Visualization
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Future Plans
Case StudiesImplement system for Florida on daily basisAdd other state's fire activity data (currently working with North Carolina)
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Acknowledgments
Support for this project has been provided by
− National Fire Plan
− USDA Cooperative State Research, Education, and Extension Service (CSREES) Air Quality Program
− EPA
Burn information provided by Florida Division of Forestry