Figure 1: Precipitation map and study site.
From: Obliquity pacing of the western Pacific Intertropical Convergence Zone over the past 282,000 years
Map of mean annual precipitation (cm per year; 1988–2004; data source: http://jisao.washington.edu/data/gpcp/). Solid and dashed white lines represent the mean positions of the ITCZ in July and January, respectively. Symbols denote locations of Chinese caves6,30,31,32 (green circles), marine sediment cores MD05-2925 in this study (blue circle) and 54MC of ref. 23 (white circle), GBR coral24 (white triangle), PNG coastal coral29 (green triangle), PNG coastal seawater27 (white diamond), surface seawater of the Coral Sea25 (black diamond) and Gregory Lakes38 (orange circle). Simulated precipitation results in sectors of PNG (5–12°S and 130–160°E, blue solid lines) and North Australia (12–20°S and 120–160°E, blue dashed lines) are given in Fig. 3 and Supplementary Fig. 8.
