Paper Figure 3 (image) Dartmouth College Share Print E-Mail Caption Comparison of the composite North Pacific ice core sodium record with the Eastern tropical Pacific record (Conroy et al. 2009) and the Western tropical Pacific record (Abram et al., 2016). Credit Dartmouth College Usage Restrictions Usage should follow standard rules for re-use of material from published academic journals. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.