Fig. 2.

Time series of vegetation and climate proxies obtained from Lake Tislit and δD_precip from core GC27, located offshore of Morocco (11). (A) Lake water δ¹⁸O calculated from fossil ostracods δ¹⁸O. (B) δD_precip (corrected for ice volume and temperature effects; see Materials and Methods and SI Appendix, Fig. S6). (C) δD_precip of core GC27 off the coast of Morocco (11). (D) Pollen percentages of trees and shrubs. Pollen-based reconstructions of annual (E), DJF (F), spring (MAM) (G), and JJA (H) precipitation in millimeters, with uncertainty values that correspond to the maximum and minimum values obtained using a jackknife procedure (gray area). All Tislit curves correspond to moving averages over three samples. The points in A correspond to raw data. The red bars on the y-axes of the pollen-based reconstructions (E–H) indicate the modern values. The AHP is highlighted in light blue shading. YD, Younger Dryas; VSMOW, Vienna Standard Mean Ocean Water.