🔬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 ⬇️

Northern Greenland transect stacked ice cores as a proxy for winter extreme events in Europe

Abstract. High-resolution ice core records from the Greenland ice sheet provide critical insights into past climate variability across seasonal to multidecadal timescales. A key proxy in these reconst...

cp.copernicus.org

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

🎉❄️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

Paper Alert 🚨 2024 broke many records of unprecedented heat. The epicenter of extreme warming was definitely Eastern Europe, not just for one reason! If you wanna know the contributors to this event, Dr. @moniionita.bsky.social and co-authors can tell you: www.nature.com/articles/s44... 🧵

Breaking records under clear skies: the impact of sunshine duration and atmospheric dynamics on the 2024 Eastern European extreme summer temperatures - npj Natural Hazards

npj Natural Hazards - Breaking records under clear skies: the impact of sunshine duration and atmospheric dynamics on the 2024 Eastern European extreme summer temperatures

nature.com

✨ Our first expedition blogs are now live! ✨ 🚢 Step aboard the R/V Kronprins Haakon and follow the expedition team as they settle into life at sea and gear up to collect their very first long sediment cores from the Arctic seafloor. 🔗 arcg.is/0favaf0 @paleodyn.bsky.social @bjerknes.uib.no

i2B Arctic Ocean Expedition 2025

Collecting new geological archives that will reveal past Arctic climate secrets

arcg.is

Did you know that the i2B (@i2b-erc.bsky.social) Arctic Ocean Expedition is departuring tomorrow to unveil the secrets of the past Arctic greenhouse climates? And you can follow the amazing team of scientistis onboard in the blog created for the expedition: arcg.is/0favaf0

i2B Arctic Ocean Expedition 2025

Collecting new geological archives that will reveal past Arctic climate secrets

storymaps.arcgis.com

Paper Alert 🚨 How about looking at the Earth at a super fine resolution? We made it! In the article led by Dr. Ja-Yeon Moon in collaboration with Paleodyn members, the Earth's future climate and variability was simulated at 9 kilometer global resolution! Link: esd.copernicus.org/articles/16/...

⚠️New study alert: Seasonal sea ice characterized the glacial Arctic-Atlantic gateway over the past 750,000 years www.eurekalert.org/news-release... @paleodyn.bsky.social

Frozen, but not sealed: Arctic Ocean remained open to life during ice ages

A new study challenges the long-debated theory that a massive, kilometre-thick ice shelf once covered the entire Arctic Ocean. By analysing ocean sediments and running advanced climate models, researc...

eurekalert.org

Paper alert! 🚨 Ever wondered how ENSO contributes to Marine Heat Waves #MHVs? In the study conducted in collaboration with PhD candidate Alessandro Gagliardi (@alexgag11.bsky.social), the authors isolated the effect of ENSO in driving SST variability, including MHV extremes! doi.org/10.1175/BAMS...

Removing ENSO’s influence from global SST variability, with insights into the record-setting marine heatwaves of 2023-2024

Abstract The El Niño-Southern Oscillation (ENSO) is a dominant driver of seasonal-interannual climate variability and has been linked to record-setting extremes such as marine heatwaves (MHWs). Howeve...

doi.org

Paper Alert! 🚨 PhD candidate Yugeng Chen (@yugengchen.bsky.social) and co-authors explore the mechanisms of enhanced AABW formation during the Last Glacial Maximum (LGM) in their recent publication to GRL! agupubs.onlinelibrary.wiley.com/doi/10.1029/... 🧵(1/5)

Mechanisms Driving the Extensive Antarctic Bottom Water in the Glacial Atlantic

Reduced mixing between NADW and AABW preserved AABW's colder, denser properties, allowing its broader expansion during the LGM Simulations show PD sea ice production arises from seasonal variatio...

agupubs.onlinelibrary.wiley.com

Developing Earth System Models is essential for climate research as they are to represent more components of the Earth System than climate models of lower complexity. However, it is not an easy task! Dr. Jan Streffing, the developer of AWI-CM3, will show at #EGU25 the work of building AWI-ESM3.

Heat stress events during the summer are not only a reality but also projected to intensify in magnitude and frequency in the future. Would you like to know what are the mechanisms driving them? Dr. Qiyun Ma (@qiyunma.bsky.social) wil uncover them during his oral presentation at #EGU25!

Can you imagine a world without the Antarctic Circumpolar Current? At #EGU25, PhD candidate Hanna Knahl will introduce you the world of the Eocene-Oligocene Transition, around 34 Ma, where the ocean gateways were much different from now! Deep time for real!

Climate modelling is a powerful laboratory to understanding climate processes at various scales. However, not all models are able to capture the effects of smaller scale perturbations in the Earth System. Our PhD candidate, Alexander Thorneloe, using FESOM2 did a wonderful job at tacking this issue!

Ice sheets are a pivotal component of our climate system and subject to instabilities due to current and climate change. Here, at PaleoDyn, Dr. Christian Rodehacke has performed a series of simulations with interactive #GrIS and #AIS and will give an oral presentation on them at #EGU25

Disentangling the anthropogenic impact to climate from its natural variability is not trivial. However, Dr. Monica Ionita (@moniionita.bsky.social) will show at #EGU25 that the extreme summer temperatures observed in 2023 in Eastern Europe were driven by anthropogenic climate change!

Paleodyn's contribution to #EGU25 on Tuesday, 29 April, starts with the oral presentation of our PhD Candidate, Fernanda Matos (@fdaomatos.bsky.social). She will talk about the calculation of the AMOC in density space, and how it becomes crucial in warmer climates, using our AWI-CM3 model.

Tree rings are a valuable proxy to paleoclimate. Dr. Viorica Nagavciuc will explain in detail, at #EGU25, how oxygen isotope concentrations in tree rings were used to reconstruct past drought events in central and eastern Europe!

The Arctic is undergoing an amplified warming and changes in its climate variability when comparing to the average global temperature. At #EGU25, Yongyue Luo will show us how the Atlantic Multidecadal and Pacific Decadal Oscillations modulate the climate variability in Eurasian sector of the Arctic!

Climate extremes are a rising concern to Europe as they are projected to increase in frequency and magnitude in the future. But what about the past? Alessandro Gagliardi (@alexgag11.bsky.social) will present a poster at #EGU25 showing how ice cores are used to unveil past climate extremes!

Our section head, Prof. Dr. Gerrit Lohmann will also present at #EGU25. Besides supporting many of our studies as an advisor and co-author, he will be a keynote speaker in two sessions this year!

The groundbreaking study led by Dr. Pengyang Song is out today in @natclimchange.bsky.social! In his article, Dr. Song and co-authors investigate the response and feedback of ice cavities under a changing climate using the AWI Earth System Model AWI-ESM2. www.nature.com/articles/s41...

Regional conditions determine thresholds of accelerated Antarctic basal melt in climate projection - Nature Climate Change

Melting from below is crucial for the future evolution of Antarctic ice shelves. Here the authors use an Earth system model with explicit simulations of ice-shelf cavities to show how regional hydrogr...

nature.com

Germany is now suffering from uncertainties in future river water level, either because of #droughts, or #floods. In her talk at #EGU25, Dr. Zohreh Khozani will explore the potential of predicting river level with #ML for water resource management!

The new @wcrp-cmip.org phase is just around the corner! At #EGU25, Dr. Christian Stepanek will explain how the Last Interglacial, with the abrupt-127k experiment, is a valuable addition to the CMIP7 FastTrack project and may reveal key drivers of past and future Arctic climate change.

Our first presentation at @egu.eu General Assembly 25 is from Dr. Lars Ackermann, one of our postdocs. His work focuses on modelling the Earth System with AWI-ESM, especially by incorporating components that are not usually present in climate models, like icebergs and interactive ice sheets (COOL)!

From this week until the @egu.eu General Assembly in Vienna, we will show you the contributions that PaleoDyn will be making to science at the conference! We have plenty of our scientists attending EGU this year showcasing amazing research in the form of oral, PICO and poster presentations!

The new book organized by Gerrit Lohmann, our section head, is out and open access! Conversations on Climate feature interviews tackling climate change and science from the view of many amazing scientists! For epub or pdf download: link.springer.com/book/10.1007...

Conversations on Climate: The People Behind the Science

This is an open access book which presents interviews with high-profile climate scientists about state-of-the-art research questions

link.springer.com

Our Paleoclimate Dynamics group is now on Bluesky! Stay tuned for more updates on publications, the endeavors of our scientists and news on our events!