WRAP RMC Phase II Wind Blown Dust Project

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Presentation transcript:

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

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

Updated LULC Database (2000)

LULC Summary/Comparison

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

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) LULC Category Pre02b Base02a Urban 0.30 0.00 Agricultural 0.85 0.75 Grasslands 0.70 Shrublands 0.60 Forest 0.50 Barren/Water 0.97 1.00

Model Results WRAP 12-km Modeling Domain

Model Results WRAP 12-km Modeling Domain

Model Results WRAP 12-km Modeling Domain

WRAP 12-km Modeling Results

WRAP 12-km Modeling Results

WRAP 12-km Modeling Results

WRAP 12-km Modeling Results

WRAP 12-km Modeling Results

WRAP Dust Comparison

WRAP Dust Comparison

Model Results 36-km - January

Model Results 36-km - July

Model Results 36-km - Annual

Model Results 12-km - January

Model Results 12-km – July

Model Results 12-km – Annual

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