Evolution of the Antarctic ice sheet since its inception 34 million years ago and using this knowledge for advancing numerical model simulations
The Antarctic Ice Sheet (AIS) is thought to diminish considerably over coming decades and centuries – largely because warm deep waters increasingly reach its ice margins with many hinterland ice sheet portions grounded way below modern sea level, together leading to accelerating and irreversible retreat. So, are we currently witnessing the fate of an ice sheet associated with severe consequences for global coastal communities? Finding better answers to this question requires robust multi-proxy continental data evidence from times that were warmer and CO2-richer than today. Such sediment records, however, are rare and challenging to obtain, and associated continental drilling campaigns only feasible within large multinational consortiums. Some extensive Antarctic field campaigns, however, were recently realized, are about to be accomplished, or at planning stage. This presentation will introduce these campaigns and highlight how their results combined with novel coupled modeling techniques will eventually allow for significant new insights into AIS’ long-term evolution and, with this, for better predicting its behavior to conditions anticipated for the foreseeable future.
Helmholtz Research Programs > CHANGING EARTH (2021-2027) > PT2:Ocean and Cryosphere in Climate > ST2.3: Sea Level Change