What are some challenges associated with using Surface Reflectance? What problems doesn’t it solve?

The greatest uncertainty associated with the Surface Reflectance products is the estimated aerosol optical depth at the time of image acquisition. As the Dove sensor does not measure the atmosphere directly, the aerosol optical depth is sourced from MODIS NRT Global Daily MOD09CMA data. The algorithm uses the concentration of aerosols derived from MODIS NRT data as inputs to the 6SV radiative transfer model.

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