Relative to Tcab

Taking Eq. (30), one may compute the derivative with respect to Tcab:

$$\frac{1}{Tcal} \frac{\partial Tcal}{\partial T_{cab}} = \fra... ...{(T_{cab}-T_{emi})*(T_{cab}-T_{emi}-F_{eff}*(T_{cab}-T_{atm})}$$ (43)

or with the numerical values in Eq. (31) about 3.6 10^-3 per K.