Application of the Algorithms to CZCS Imagery
The initial application of the atmospheric correction algorithm to CZCS imagery made by Gordon, Mueller and Wrigley (1979) suggested that atmospheric effects could be removed even in a horizontally inhomogeneous atmosphere. Following this Gordon et al. (1980) applied both the atmospheric correction and in — water algorithms to imagery from the Gulf of Mexico. Figure 10 shows a subscene of CZCS imagery at 443 nm from the Gulf of Mexico before and after removal of the effects of the atmosphere. Orbit 130 is an example of a turbid atmosphere with aerosol optical thickness τA(670) varying between 0.16 and 0.25. Note the strong horizontal inhomogeneities in the haze which have been successfully removed by the correction algorithm. Orbit 296, on the other hand, is more representative of typical atmospheric conditions for the region (τA(670) = 0.07), and some water structure can be seen even without atmospheric removal. Application of the pigment algorithms (Gordon and Clark, 1980b) to the atmospherically corrected subscene from Orbit 296 is presented in Figure 11 (following page 90), in which the left panel gives the pigment estimation based on Lw(443)/Lw(550), while the right panel estimation is based on Lw(520)/Lw(550).
KeywordsPigment Concentration Atmospheric Correction Aerosol Optical Thickness Thermal Front Ship Track
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