Average light extinction coefficients (1/Mm) and percentage contributions to the aerosol light extinction coefficients (without Rayleigh scattering) of the major aerosol chemical components in 20% best, middle 60%, and 20% worst days based on data available during 2002-2004

Location Data Sulfate Nitrate OMC LAC Soil Sea Salt CM Aerosol Ext   Sulfate% Nitrate% OMC% LAC% Soil% Sea Salt% CM%
WIMO1 20% Best 5.11 2.79 3.60 1.27 0.31 0.10 2.69 15.87   32.2% 17.6% 22.7% 8.0% 2.0% 0.6% 16.9%
WIMO1 Middle 60% 19.39 8.82 7.42 2.45 0.99 0.16 4.52 43.75   44.3% 20.2% 17.0% 5.6% 2.3% 0.4% 10.3%
WIMO1 20% Worst 49.12 23.72 17.28 4.47 0.79 0.15 4.64 100.18   49.0% 23.7% 17.3% 4.5% 0.8% 0.2% 4.6%
WIMO1 Average 22.69 10.64 8.69 2.63 0.82 0.15 4.18 49.78   45.6% 21.4% 17.5% 5.3% 1.6% 0.3% 8.4%