GEOMAR Helmholtz Centre for Ocean Research Kiel
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November 04, 2024: Ocean Circulation and Climate Dynamics Colloquium
Dr. Flavia Boscolo-Galazzo, MARUM, Germany: "Model-data comparisons for reconstructing ancient climates: two case studies from the early Cenozoic"
When? Monday 04 November 2024 at 11 am
Where? Conference Room 5-1.214, Building 5, Wischofstr. 1-3 and
Zoom: https://geomar-de.zoom.us/j/84289388604?pwd=dGlpeTBUd1Nxem5Ec3dRYXh4NFpOUT09
Abstract:
The reconstruction of ancient climates is done through the use of proxies, model simulations or a combination of the two. Model-data comparisons provide the opportunity to explore causal relationships between climate variables but are often complicated by large discrepancies between the results obtained from models and proxies. Here, I present two case-studies based on my latest research, whereby data derived from benthic foraminiferal geochemistry (Δ47) and planktonic foraminiferal assemblage composition (species counts) perfectly match model simulations for the Oligocene Antarctic ice-sheet and the early Eocene latitudinal temperature gradient, respectively. These results provide new insights on early Cenozoic climate and call for a reassessment of the deep-time application of some of the most common climate proxies.
