ARC Seminar: S.T. Lee Lecture Series
Can abrupt climate changes happen again?
Professor Dorthe Dahl-Jensen
Niels Bohr Institute, University of Copenhagen
Tuesday 30 October 2018
4.00pm - 5.00pm
SGEES Seminar Room CO304, Kelburn Campus, Victoria University of Wellington
The Greenland and Antarctic ice sheets are reacting to recent climate changes and are losing progressively more mass every year. There is a lot of uncertainty in the predictions of future mass loss for ice sheets that strongly influences our ability to predict future sea-level rise.
From ice cores, it is possible to look into the past to gain knowledge on how ice sheets reacted to a changing climate. In turn, this knowledge can be used to improve predictions of sea-level rise in the future.
Greenland and Antarctic ice cores tell a story of 26 abrupt climate events during the last glacial period and during each of the events Greenland temperatures increased by up to 15oC over no more than 100 years. New results and interpretations of these abrupt climate changes will be presented.
The present state of ice sheets will be discussed and the risk for future abrupt changes will be evaluated.