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WRAP RMC Phase II Wind Blown Dust Project

This project by ENVIRON International Corporation and the University of California, Riverside, focuses on updating the base inventory and land use/land cover (LULC) database for wind-blown dust studies. Key revisions include improved dust transport fractions and an updated methodology for assessing fine dust (PM10/PM2.5). The latest model results, using a 12-km resolution, analyze the effects of near-source dust removal and deposition. Future steps involve performance evaluations, data comparisons with IMPROVE metrics, and a final project report update.

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WRAP RMC Phase II Wind Blown Dust Project

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  1. WRAP RMC Phase II Wind Blown Dust Project ENVIRON International Corporation and University of California, Riverside 20 September 2005

  2. Recent Revisions for Base02a Inventory • Updated LULC database • Dust Transport Fractions • Dust Fine Fraction (PM10/PM2.5)

  3. Updated LULC Database (2000)

  4. LULC Summary/Comparison

  5. Fine Fraction of Dust • Original methodology used 0.78/0.22 (PMC/PMF) • Revised methodology uses 0.90/0.10

  6. Latest Transport Fractions(Tom Pace, EPA, 6/2005) • Effects of near-source dust removal & deposition • Varies by LULC; Applied at grid-cell level (12-km)

  7. Model ResultsWRAP 12-km Modeling Domain

  8. Model ResultsWRAP 12-km Modeling Domain

  9. Model ResultsWRAP 12-km Modeling Domain

  10. WRAP 12-km Modeling Results

  11. WRAP 12-km Modeling Results

  12. WRAP 12-km Modeling Results

  13. WRAP 12-km Modeling Results

  14. WRAP 12-km Modeling Results

  15. WRAP Dust Comparison

  16. WRAP Dust Comparison

  17. Model Results36-km - January

  18. Model Results36-km - July

  19. Model Results36-km - Annual

  20. Model Results12-km - January

  21. Model Results12-km – July

  22. Model Results12-km – Annual

  23. Next Steps • Update Model performance Evaluation • Scatter plots of IMPROVE data vs. WBD Emissions • Evaluate CMAQ model performance with & without WBD Emissions • Update Project Final Report

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