Canopy optical models simulate the radiative transfer interactions of light and canopy structural properties. These models allow retrieving canopy structural characteristics. When coupled with a leaf optical model, these models also allow the retrieval of leaf attributes at the canopy scale. Implemented canopy optical models:

• 4SAIL
• FLIGHT
• INFORM

Combined radiative transfer models have several sub-models merged into one bigger model, typically including a leaf and canopy optical model. Implemented combined models

• SCOPE v.1.70
• SCOPE v.2.10

Atmospheric radiative transfer models simulate the radiative transfer interactions of light scattering and absorption through the atmosphere. These models are typically used for the atmospheric correction of airborne/satellite data and allow retrieving atmospheric composition. Implemented atmospheric RTMs:

• MODTRAN
• 6SV
• libRadtran
• ARTDECO
• SBDART
• OPAC