340,000-Year Centennial-Scale Marine Record of Southern Hemisphere Climatic Oscillation

• Published in: Science
• Main Authors: Pahnke, Katharina, Zahn, Rainer, Elderfield, Henry, Schulz, Michael
• Format: Article in Journal/Newspaper
• Language: English
• Published: American Association for the Advancement of Science (AAAS) 2003
• Subjects: Antarctic; Greenland; Pacific; Antarc*; Greenland ice core; ice core
• Online Access: http://dx.doi.org/10.1126/science.1084451; https://www.science.org/doi/pdf/10.1126/science.1084451

In order to investigate rapid climatic changes at mid-southern latitudes, we have developed centennial-scale paleoceanographic records from the southwest Pacific that enable detailed comparison with Antarctic ice core records. These records suggest close coupling of mid-southern latitudes with Antarctic climate during deglacial and interglacial periods. Glacial sections display higher variability than is seen in Antarctic ice cores, which implies climatic decoupling between mid- and high southern latitudes due to enhanced circum-Antarctic circulation. Structural and temporal similarity with the Greenland ice core record is evident in glacial sections and suggests a degree of interhemispheric synchroneity not predicted from bipolar ice core correlations.