As shown in Figure 2, the average PM2.5 mass
concentration measured at ROMA1 during 2000 to 2004 is 9.0
µg/m3. The average total light extinction coefficient (Bext) is 84.5 Mm-1
(Visual Range ~ 59 Km; Deciview ~ 20). The average contributions of the
major aerosol components to Cape Romain haze are particulate sulfate 55.2%,
coarse mass (CM) 3.8%, organic matter (OMC) 14.5%, elemental carbon (light
absorbing carbon, LAC) 4.6%, fine soil 0.6% and nitrate 5.7%.
Figure 2. Average
contributions of major aerosol chemical components to light extinction
(Based on data available in 2000-2004)
Figure 3. Percentage of
sampling days that are 20% worst days in each month (Based on data available
in 2000-2004)
Figure 4. Average
contributions of major aerosol chemical components to light extinction
during 20% worst days in each month (Based on data available in 2000-2004)
For a detailed examination of
the aerosol characteristics at Cape Romain consult the
aerosol description web page.
