Based on the aerosol data available from 2000-2002,
six
source factors were generated from the PMF modeling. We have labeled these
six factors
based on the preliminary analysis as shown below (click on the chart to see
the full size figure). Time series plots
are also provided that shows how
the factors vary year to year.
Plots that show mass fraction of each species can also be viewed.
Nitrate-rich Secondary
Mobile/Road Dust
Dust
Sulfate-rich Secondary
Secondary Sulfate - Co
Diesel
Based on the PMF modeling results, the
average contribution of each source factor to PM2.5 mass concentration is
shown in the figure below (click
on the chart to see the full size figure).
The chart below shows the comparison of
the reconstructed PM2.5 mass based on the PMF modeling and the measured PM2.5
mass (click on the plot
to see the full size version).
The PMF modeling results, including the
source profiles and the contributions of the source factors to the PM2.5
mass on a sample by sample basis, are available in this
Excel
Spreadsheet.