MODTRAN cloud and multiple scattering upgrades with application to AVIRIS
- Spectral Sciences, Inc., Burlington, MA (United States)
- Air Force Research Lab., Hanscom AFB, MA (United States). Geophysics Directorate
Recent upgrades to the MODTRAN atmospheric radiation code improve the accuracy of its radiance predictions, especially in the presence of clouds and thick aerosols, and for multiple scattering in regions of strong molecular line absorption. The current public-released version of MODTRAN (MODTRAN3.7) features a generalized specification of cloud properties, while the current research version of MODTRAN (MODTRAN4) implements a correlated-k (CK) approach for more accurate calculation of multiple scattered radiance. Comparisons to cloud measurements demonstrate the viability of the CK approach. The impact of these upgrades on predictions for AVIRIS viewing scenarios is discussed for both clear and clouded skies; the CK approach provides refined predictions for AVIRIS nadir and near-nadir viewing.
- Sponsoring Organization:
- Department of Defense, Washington, DC (United States); USDOE, Washington, DC (United States); Environmental Protection Agency, Washington, DC (United States); Department of the Air Force, Washington, DC (United States)
- OSTI ID:
- 323785
- Journal Information:
- Remote Sensing of Environment, Vol. 65, Issue 3; Other Information: PBD: Sep 1998
- Country of Publication:
- United States
- Language:
- English
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