Pre02d Results

1
WRAP RMC Phase II Wind Blown Dust Project
Regional Modeling Center ENVIRON UCR
CE-CERT UNC-CEP WRAP Workshop on Fire, Carbon
and Dust Sacramento, CA May 23 24, 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)

3
Data Sources

• Landuse/Landcover
• 2000 North American Land Cover Database (2000
  NALC)
• Soil Texture
• STATSGO soils database (from Penn State)
• Meteorology
• Penn State/NCAR MM5 model simulations
• Annual 2002 36-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
PM10 WB Dust Emission Summary (tpy)
8

9
2002 Annual PM10 WB Dust Emissions
10

11
2002 Monthly WB PM10 Dust EmissionsWRAP States
12
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)

13
Saguaro West, AZ, Coarse Mass
14
Saguaro West, AZ, Soil
15
Salt Creek, NM, Coarse Mass
16
Salt Creek, NM, Soil
17
CMAQ Sensitivity Simulations
18
Model Performance Evaluation
Fine Soil
Coarse Mass
19
Saguaro West, AZ
Fine Soil
Coarse Mass
20
Salt Creek, NM
Fine Soil
Coarse Mass
21
Badlands, NP

Glacier, NP
22
Grand Canyon, NP

San Gabriel