Figure 4: Atmosphere and ocean relationships to Mesoamerican rainfall.
From: Persistent drying in the tropics linked to natural forcing
(a,b) Correlations between summertime (May–October) observed precipitation averaged over the Yucatán Peninsula and SST (a) and SLP (b). (c,d) Correlations of the SST and SLP fields with the GU-Xi-1 speleothem δ18O (multiplied by −1). Contours in all figures are drawn at 0.1 intervals. Regions where the correlation exceeds the 95% confidence level for significance are shaded in colour (orange for positive and light blue for negative).
