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We are the Paleoclimate Dynamics group from the Alfred Wegener Institute! Opinions are our own.

Paleoclimate Dynamics

We simulated the Southern Ocean 33.5 million years ago. At that time, the global climate was transitioning from a greenhouse 🌴 to the icehouse climate 🧊 and ocean gateways around Antarctica (Drake Passage and Tasman Gateway) were opening. A lot was changing at the same time 🤹

Check out our exciting new study about the Antarctic Circumpolar Current in its infancy! 🔗 doi.org/10.1073/pnas... 📸 Knahl and Scholz

Today, it is 'fully grown' to the most powerful ocean current on earth 💪 Hanna Knahl and colleagues (@awi.de @nick-golledge.bsky.social @imas-utas.bsky.social) show that the Tasman Gateway, had to open much wider than some studies previously assumed to develop a full Antarctic Circumpolar Current 🐳

If you want to learn more, see also our press release: 🔗 www.awi.de/en/about-us/... #Antarctica #ACC #paleoclimate #climatemodel 📸 Knahl et al., 2026, PNAS. CC BY 4.0

2mo

🔬In our new study, my first-author paper, we investigated whether Greenland ice cores could provide information about the occurrence of extreme winter events in Europe. ✅ Short answer: Yes, they do. 📄Read the study (open access, no paywall) cp.copernicus.org/articles/22/... 🧵Long answer ⬇️

Paleoclimate Dynamics

1mo

Paleoclimate Dynamics

🎉❄️The i2B Expedition Team has reached the North Pole 🚢🌍 Today, the i2B expedition celebrated its halfway point at the most symbolic place imaginable: the North Pole. Read more about our stop: 🔗 arcg.is/0favaf0 @paleodyn.bsky.social @bjerknes.uib.no 📸 @rhewlif.xyz

💭 Read the reflections of @paleodyn.bsky.social PhD student @alexgag11.bsky.social, who traded screens for the Arctic Ocean. Aboard R/V Kronprins Haakon, he cut open sediment cores holding thousands of years of history and sampled water from 4000m below. 🚢❄️ 🔗 arcg.is/0favaf0

9mo

Alessandro Gagliardi

i2B - Into The Blue