Climate variability in coastal East Antarctica over the past millennia: insights from the Mount Brown South ice core water isotope record ...

• Main Author: Jackson, Sarah
• Format: Article in Journal/Newspaper
• Language: English
• Published: The Australian National University 2023
• Subjects: East Antarctica; Indian; Mount Brown; South Ice; Southern Ocean; Antarc*; Antarctica; ice core
• Online Access: https://dx.doi.org/10.25911/71xb-ab77; https://openresearch-repository.anu.edu.au/handle/1885/294628

Antarctica and the Southern Ocean represent critical components of the global climate system. However, understanding the inter-annual to decadal-scale variability in Antarctica is limited by the short-observational window. In lieu of direct observations of climate in the Southern Hemisphere high latitudes, ice core records are used to augment the short observational records to constrain regional climate variability. In particular, ice core records from coastal or quasi-coastal regions, where high annual accumulation preserves annual layers, are critical for constraining the inter-annual to decadal-scale variability experienced over the last 2000 years. While some regions of Antarctica have a high density of available high-resolution ice core records, others are notable for the lack of record availability. In particular, the Southern Indian Ocean sector of East Antarctica is deficient in ice core records. This region overlies several subglacial basins which pose critical concern for future ice loss from the ...