Sensitivity analysis and validation plans for the retrieval of surface reflectance from ASTER

Kurtis J. Thome

doi:10.1117/12.258091

11 November 1996 Sensitivity analysis and validation plans for the retrieval of surface reflectance from ASTER

Kurtis J. Thome

Proceedings Volume 2820, Earth Observing System; (1996) https://doi.org/10.1117/12.258091
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

A look-up table approach is planned for the atmospheric correction of ASTER data in the solar reflective region. As part of the work to develop this atmospheric correction a sensitivity analysis of top-of-the-atmosphere radiances to changes in aerosol properties has been done. The results presented here use a Gauss-Seidel iteration radiative transfer code to examine effects of changes in aerosol parameters on retrieved surface reflectance. For reflectances greater than 0.1, the surface reflectance retrieval is most sensitive to changes in the aerosol complex index of refraction. At low reflectances, the retrieval is most sensitive to the aerosol scattering optical depth and size distribution. The impact of these results in determining a validation method is discussed.

Citation Download Citation

Kurtis J. Thome "Sensitivity analysis and validation plans for the retrieval of surface reflectance from ASTER", Proc. SPIE 2820, Earth Observing System, (11 November 1996); https://doi.org/10.1117/12.258091

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