S0  = W/m2  Solarconstant at 1 AU
r  =   AU  Distance from sun
eps(e) =  %  Emissivity
eps(r) =  %  Albedo = %  --- Reflectivity
     
S   =  W/m2  Solarconstant at distance r
T   =   K  Equilibrium temperature in K
δ   =   ºC  Equilibrium temperature in ºC

Modified from http://www.schulphysik.de/solar.html
[CO2] = 370 ppm
INTEGRATED RADIATION ENERGY FLUX= 287.875W/m2 
BOUNDARY TEMPERATURE = 299.70 K
EMISSIVITY = 0.6293 

[CO2] = 740 ppm
INTEGRATED RADIATION ENERGY FLUX= 284.672W/m2 
BOUNDARY TEMPERATURE = 299.70 K 
EMISSIVITY = 0.6223