As shown in Figure 2, the average PM2.5 mass
concentration measured at OKEF1 during 2000 to 2004 is 9.3
µg/m3. The average total light extinction coefficient (Bext) is 88.6 Mm-1
(Visual Range ~ 55 Km; Deciview ~ 21). The average contributions of the
major aerosol components to Okefenokee haze are particulate sulfate 56.4%,
coarse mass (CM) 3.2%, organic matter (OMC) 16.8%, elemental carbon (light
absorbing carbon, LAC) 4.3%, fine soil 0.8%, sea salt 0.7%, and nitrate 5.4%.
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 Okefenokee consult the
aerosol description web page.
