BOREAS Aerosol Measurements: Landsat TM Atmospheric Correction Example
The above is a false color-infrared image of a subset from a Landsat TM
scene acquired 2 September 1994 over the BOREAS Southern Study Area.
This scene was atmospherically corrected with the NASA Ames Wrigley/Slye
algorithm, Imagecor, using aerosol
optical depth measurements acquired during the third IFC. The southern tip of
Candle Lake can be seen in the lower left of the image. The OBS site is in
the upper left, the YJP and OYP sites are located in the upper right, and
the FEN site is along the middle, right edge.
The following image is the uncorrected version of the same data, but
stretched the same as the image above. This image has a blue cast because
the atmospheric correction has a greater affect at shorter
wavelengths. This is primarily due to the strong wavelength dependence
of Rayleigh scattering. Aerosol optical depths also
decrease with wavelength,
but not as dramatically.
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