Comparison

Official code comparison Web site of the MODIS atmospheric correction group

The comparison was performed separately for molecular, aerosol and mixed (molecular + aerosol) atmospheres. For a molecular atmosphere, TOA (top-of-atmosphere) reflectances produced by the RT codes were compared to Coulson's tabulated values. In two other cases, the 6SV1 simulations were compared to those produced by the Monte Carlo code and then used as benchmarks for other codes.


1. Molecular atmosphere

  • Conditions of the comparison
    (6SV1, RT3, MODTRAN, & SHARM vs. Coulson's)

  • Results of the comparison
    (6SV1, RT3, MODTRAN, & SHARM vs. Coulson's)

  • Note: VPD was dropped from the comparison after the completion of the molecular case.

  • Conditions of the comparison
    (6SV1 vs. Monte Carlo)

  • Results of the comparison
    (6SV1 vs. Monte Carlo)


2. Aerosol atmosphere

  • Conditions of the comparison
    (6SV1, RT3, MODTRAN, & SHARM vs. Coulson's)

  • Results of the comparison
    (6SV1, RT3, MODTRAN, & SHARM vs. Coulson's)

  • Note: In addition to the Excel files with the results, we also provide 6SV1 Mie-files with the calculated phase function values (251 Gaussian angles) for each value of optical thickness.

  • Conditions of the comparison
    (6SV1 vs. Monte Carlo)

  • Results of the comparison
    (6SV1 vs. Monte Carlo)


3. Mixed atmosphere

  • Conditions of the comparison
    (6SV1, RT3, MODTRAN, & SHARM vs. Coulson's)

  • Results of the comparison
    (6SV1, RT3, MODTRAN, & SHARM vs. Coulson's)

  • Conditions of the comparison
    (6SV1 vs. Monte Carlo)

  • Results of the comparison
    (6SV1 vs. Monte Carlo)