Ri,calc = i Bi(Ts) +
'i Hi 'i(ps) cos(0) +
Bi(T(p)) (dui/dln p) (dln p) +
Bi(T(p)) (ddi/dln p) (dln p)
Bi(T) is the Planck function evaluated at the effective
Hi is the channel averaged solar irradiance at the top of the atmosphere.
0 is the local zenith angle of the Sun.
'i is the channel averaged two path transmittance from the Sun to the surface to the satellite.
ui(p) is the atmospheric transmittance measured
between p and the top of the atmosphere for channel i.
di(p) is the atmospheric transmittance between p and the surface for channel i.
Explicit retrieved parameters
i is the surface emissivity at i.
Ts is the surface temperature.
T(p) is the surface temperature profile.
i is the surface spectral reflectivity at i.
'i is the surface spectral bidirectional reflectance
of solar radiation at i.
Implicit retrieved parameters ( i.e., within
i and 'i).
CO2(p) is the carbon dioxide profile.
q(p) is the humidity (water) profile.
O3(p) is the ozone profile.
CO(p) is the carbon monoxide profile.
CH4(p) is the methane profile.
NO2(p) is the nitrogen dioxide profile.