Fig. 1.

Maps showing the location of Lake Tislit, core GC27 (11), and Lake Yoa (6), along with the schematic position of the Inter Tropical Convergence Zone, with modern mean JJA (A) and DJF (B) rainfall (56). Map C shows the correlation coefficients (r) between Tislit and northern Morocco for DJF precipitation variability over the 1901 to 2010 time period (using the 20th century reanalysis of National Oceanic and Atmospheric Administration; https://psl.noaa.gov/data/20thC_Rean/). The limit of statistical significance (0.05 level) is shown by the dashed black line. Gray contours indicate annual precipitation isohyets (millimeter/year).