Figure 2
From: Sensitivity of speleothem records in the Indian Summer Monsoon region to dry season infiltration

Top to bottom: Gaussian kernel smoothed U/Ca (blue) and Mg/Ca (orange), δ18O (purple) and PDO index (black, http://research.jisao.washington.edu/pdo/) with bold LOESS smoothed lines. The blue bar indicates the period of positive PDO index.