Relation between equilibrium evaporation and the saturation pressure budget.
The limiting surface Bowen ratios are calculated which maintain mixed-layer saturation pressure and relative humidity, both with and without boundary-layer entrainment. The equations are formally the same as those of Culf (1994) for equilibrium evaporation, but differ numerically because the coefficients are calculated at the mixed-layer saturation temperature (at the lifting condensation level) rather than at the surface temperature. The diurnal cycle over land is used to illustrate the value of these constraints.
Betts, A. K., 1994: Relation between equilibrium evaporation and the saturation pressure budget. Boundary-Layer Meteorol. 71, 235-245.