Early-Mid Pleistocene ice core records of Antarctic and global cooling
- Princeton University, Geosciences, United States of America (ss77@princeton.edu)
- *A full list of authors appears at the end of the abstract
Here we present water isotope and noble gas data from the Allan Hills, Antarctica, which provide insight into the local and global climate extending through the Mid Pleistocene Transition and beyond. The Allan Hills blue ice archive provides snapshots of climate that extend well beyond continuous ice core records, but their interpretation has challenges, including complex stratigraphy, potential preservation bias, and highly thinned records. The water isotope and noble gas data (which come from the same ice samples) suggest a statistically significant correlation between Antarctic temperature and mean ocean temperature, consistent with previous studies. However, we observe subtle differences between these climate reconstructions, including within the mid-Pleistocene transition. We discuss these datasets in the context of broader global changes, and the nuances of the Allan Hills archives.
Sarah Shackleton, John Higgins, Michael Bender, Valens Hishamunda, Yuzhen Yan, Ed Brook, Christo Buizert, Julia Marks Peterson, Jenna Epifanio, Jeff Severinghaus, Jacob Morgan, Sarah Aarons, Austin Carter, Andrei Kurbatov, Douglas Introne, Eric Steig, Lindsey Davidge
How to cite: Shackleton, S. and the Allan Hills Blue Ice Coring Team: Early-Mid Pleistocene ice core records of Antarctic and global cooling , EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-14335, https://doi.org/10.5194/egusphere-egu24-14335, 2024.