The main cooling (left panels) and heating (right panels) processes along a disk wind streamline launched from 1 AU, for our Class 0, Class I, and Class II models (top to bottom). The heat transfer from grain to gas, Γ_g,n, appears in the cooling curves when negative, and in the heating curves when positive. Other plotted cooling/heating terms are: Λ_adia: adiabatic cooling, Λ_H2,H2O,CO: line cooling from H₂, H₂O, CO. Γ_drag: ambipolar diffusion heating Γ_ohm: ohmic heating, Γ_g,photo: photoelectric effect on grains, Γ_X,cr: X-ray and cosmic ray heating. OH line cooling never dominates and is not plotted for clarity.