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MODIS

 

Atmospherically corrected reflectances

 

An atmospheric correction is implemented during the day for bands 1 to 7. To that end, the SMAC software (Rahman and Dedieu, 1994) has been selected. This software is available as both IDL function and executable. This program runs on a pixel by pixel basis, and needs additional information such as (standard values in parentheses): atmosphere type (continental), atmospheric pressure (1013 hPa), aerosol optical thickness (0.05) and ozone concentration (0.33 atm.cm). Additionally, water vapor product is needed as an input of the SMAC software.

 

 

Reference

 

Rahman, H. & Dedieu, G. (1994). SMAC: a simplified method for the atmospheric correction of satellite measurements in the solar spectrum, International Journal of Remote Sensing, 1994, vol.15, No.1, 123-143.