Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1999 · 447 citations · 12 references
Natural SciencesEarth SciencesMeteorologyAtmospheric RadiationAtmospheric ScienceRemote SensingAtmospheric CorrectionAtmospheric ScatteringRadiation ParameterizationReflectance ModelingSurface Radiation BudgetAccuracyBand Model Radiative TransferBidirectional Reflectance Distribution Function CorrectionBidirectional Reflectance Distribution FunctionsBidirectional Surface Reflectance DistributionMultiple ScatteringRadiative Transfer ModelingRadiative Transfer Parameterization
MODTRAN4, the latest publicly released version of MODTRAN, provides many new and important options for modeling atmospheric radiation transport. A correlated-k algorithm improves multiple scattering, eliminates Curtis-Godson averaging, and introduces Beer's Law dependencies into the band model. An optimized 15 cm<SUP>-1</SUP> band model provides over a 10-fold increase in speed over the standard MODTRAN 1 cm<SUP>-1</SUP> band model with comparable accuracy when higher spectral resolution results are unnecessary. The MODTRAN ground surface has been upgraded to include the effects of Bidirectional Reflectance Distribution Functions (BRDFs) and Adjacency. The BRDFs are entered using standard parameterizations and are coupled into line-of-sight surface radiance calculations.
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