Antarctic Ice Core Reveals How Sudden Climate Changes In North Atlantic Moved South
(Click to enlarge) An ice core from the West Antarctic Ice Sheet Divide project. The dark band is a layer of volcanic ash that settled on the ice sheet approximately 21,000 years ago. (Credit: Heidi Roop, NSF)
A new, highly detailed ice core retrieved by researchers with the National Science Foundation (NSF)-funded West Antarctic Ice Sheet (WAIS) Divide project reveals a consistent pattern of climate changes that started in the Arctic and spread across the globe to the Antarctic during planet Earth’s last glacial period, tens of thousands of years ago.
(From NSF)– Representing more than 68,000 years of climate history, data extracted from the core–a cylinder of ice that represents a cross-section of the ice sheet–is helping scientists understand past, rapid climate fluctuations between warm and cool periods that are known as Dansgaard-Oeschger events. Read the full story »