KlimaCampus Kolloquium: From water molecules to climate : making sense of Greenland and Antarctic ice core records

Records of water stable isotope ratios in ice core records are commonly used as qualitative proxies for past changes in temperature and moisture source characteristics, and I have worked to extract quantitative signals.

Recent findings have emerged from new methodologies to monitor water vapour stable isotopes. They challenge the classical interpretation of ice core records as precipitation signals, and the ability of atmospheric models equiped with water stable istopes to correctly capture the spatial structure of boundary layer vapour isotopic composition in the North Atlantic.

Greenland ice core records have been used to characterize the spatio-temporal climate response to major volcanic eruptions of the last millennium. Antarctic water stable isotope records spanning the last 200 years have been combined with short instrumental records to characterize the full range of natural climate variability, and assess recent trends.

Reconciling temperature anomalies inferred from Antarctic and Greenland ice core records during the last interglacial period with orbitally-driven climate simulations calls for better understanding of ice sheet - climate interplays.

Date

01.12.2016

Time

15:15 h

Place

Bundesstr. 53, room 022/023
Seminar Room 022/023, Ground Floor, Bundesstrasse 53, 20146 Hamburg, Hamburg

Speaker

Valérie Masson-Delmotte, LSCE / IPSL

Organizers

Bjorn Stevens
Jochem Marotzke

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