Bipolar correlation of volcanism with millennial climate change

• Published in: Proceedings of the National Academy of Sciences
• Main Authors: Bay, Ryan C., Bramall, Nathan, Price, P. Buford
• Format: Text
• Language: English
• Published: National Academy of Sciences 2004
• Subjects: Physical Sciences; Greenland; Siple; Siple Dome; Southern Ocean; Antarc*; Antarctica; Greenland Ice Sheet Project; Ice Sheet
• Online Access: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC404046; http://www.ncbi.nlm.nih.gov/pubmed/15096586; https://doi.org/10.1073/pnas.0400323101

Analyzing data from our optical dust logger, we find that volcanic ash layers from the Siple Dome (Antarctica) borehole are simultaneous (with >99% rejection of the null hypothesis) with the onset of millennium-timescale cooling recorded at Greenland Ice Sheet Project 2 (GISP2; Greenland). These...