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Derived quantities | |||
Bidirectional reflectance |
phys.reflectance.bidirectional.df | sr**(-1) | Ratio of radiance to incident normal solar flux |
bidirectional reflectance distribution function |
phys.reflectance.bidirectional.df | sr**(-1) | (mostly used in terrestrial remote sensing) |
Reflectance factor (REFF) = |
phys.reflectance.factor | dimensionless | Ratio of radiance to that of a Lambertian disk at the same distance and illuminated under the same incidence |
Normalized reflectance |
M4ast currently uses (better, std) would do: | dimensionless | Normalized to 1 at some wavelength |
+ thermal / emission quantities | phys.emissivity Same as I/F for spectral measurements | I/F also apply to observations in the thermal range. What about lab measurements? | |
+ Hemispherical quantities | Integrated in half space | TBC |
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