Fig. 5. Model steady-state pore water ¹⁸O values for a constant infiltration of 50 mm yr^–1 of water with a ¹⁸O value of –16.5. The soil types and atmospheric conditions (h = 40% and ¹⁸O_a = –21) are the same as for Fig. 3. The value of ¹⁸O_MAX that would be reached under these atmospheric conditions, but without infiltration, is shown as a vertical line.