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WRAP RMC Windblown Dust Emission Inventory Project Summary

Published byDella Webster Modified over 5 years ago

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Presentation on theme: "WRAP RMC Windblown Dust Emission Inventory Project Summary"— Presentation transcript:

1 WRAP RMC Windblown Dust Emission Inventory Project Summary
Dust Emission Joint Forum 6 June 2006

2 WRAP Fugitive Windblown Dust (WBD) Emissions Model
PM dust emissions from wind erosion Relies on land use and soil characteristics in order to estimate threshold surface friction velocities and emission rates Special treatment for agricultural lands Current version of model uses updated landuse/landcover (2000 NLAC) Revised PM10/PM2.5 ratios Updated Transport Fractions (TFs) Project Final Report available from or

3 Data Sources Landuse/Landcover Soil Texture Meteorology
2000 North American Land Cover Database (2000 NALC) Soil Texture STATSGO soils database (from Penn State) Meteorology Penn State/NCAR MM5 model simulations Annual km WRAP modeling domain Fugitive dust transport fractions from EPA (Pace, 2005) Developed at grid-cell level based on 2000 NALC

4 Landuse/Landcover (LULC)

5 Transport Fractions Soil Texture

6 LULC Summary

7 Transport Fractions (Tom Pace, EPA, 6/2005)
Effects of near-source dust removal & deposition Varies by LULC; Applied at grid-cell level (12-km) LULC Category Pre02d Base02b Urban 0.30 0.00 Agricultural 0.85 0.75 Grasslands 0.70 Shrublands 0.60 Forest Barren/Water 0.97 1.00

8 PM10 WB Dust Emission Summary (tpy) 2002 Annual 12-km Modeling Results

9 2002 Annual 12-km Modeling Results

10

11 2002 Annual PM10 WB Dust Emissions

12

13 2002 Monthly WB PM10 Dust Emissions WRAP States

14 Model Performance Evaluation
Evaluate reasonableness of WBD Model results Compare predicted PM dust emissions near IMPROVE monitors with Observed fine soil and coarse mass Evaluate CMAQ model sensitivity to WB PM Dust emissions Modified CMAQ simulations to track WB Dust emissions separately Review modeling results for fine soil and coarse mass Evaluate CMAQ model performance with and without WB Dust emissions Investigate model performance at IMPROE monitors w/ and w/o WB Dust emissions (time series and scatter plots)

15 Saguaro West, AZ, Coarse Mass

16 Saguaro West, AZ, Soil

17 Salt Creek, NM, Coarse Mass

18 Salt Creek, NM, Soil

19 CMAQ Sensitivity Simulations

20 Model Performance Evaluation
Fine Soil Coarse Mass

21 Saguaro West, AZ Fine Soil Coarse Mass

22 Salt Creek, NM Fine Soil Coarse Mass

23 Badlands, NP Glacier, NP

24 Grand Canyon, NP San Gabriel

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