Frerk Pöppelmeier

another (very unintuitive) finding is that the filling time of the ocean is about 2x its maximum ideal age - it takes over 3000 years to fill the mid-depths of the Pacific!

I am co-convening a meeting at the Royal Society later this year, with @krhendry.bsky.social and other very excellent polar science colleagues. If you have interests relating to Antarctica and the impacts of climate change, please consider participating!

📢The Past Ocean Oxygenation @pages-ipo.bsky.social Working Group is here! 🚤 We provide insights into the natural variability of seawater oxygen in key periods of the geological record & communicate the science behind oxygen reconstructions 🐳 PO2 is here! pastglobalchanges.org/science/wg/p...

What do sea-ice associated seabirds do during a season with little sea ice? Results from GPS tracking on snow petrels is now published, led by @elliehonan.bsky.social funded by @erc.europa.eu @leverhulme.ac.uk details here: www.antsie.webspace.durham.ac.uk/2025/06/06/snow-petrel-tracking/ 🧪🐙

Multiple sources of atmospheric CO2 activated by AMOC recovery at the onset of interglacial MIS 9 | PNAS Using high-precision ice core measurements of CO2, δ13C–CO2, CH4, and N2O, this study provides carbon isotope constraints on a sizeable, centennial...

🚨--- New Paper ---🚨

Watch Florian Krauss @iceflow42.bsky.social wield the ¹³C of CO₂ sword across the highest, NATURAL spike in CO₂ and CH₄ of the last 800,000 years.

www.pnas.org/doi/10.1073/...

US federal cuts threaten international ocean science and diplomacy - Nature Ecology & Evolution Nature Ecology & Evolution - US federal cuts threaten international ocean science and diplomacy

Our new paper authored by the Scientific Committee of the
#OOSC on "US federal cuts threaten international ocean science and diplomacy" has been published. www.nature.com/articles/s41...

Schematic illustrations showing source water mixing in the Atlantic Basin during Heinrich Stadial 1 and the Last Glacial Maximum

⚒️ Article: North Atlantic Deep Water formation was only moderately weaker than present during the Last Glacial Period, even when freshwater inputs were high

@paddylaser.bsky.social @unil.bsky.social @fpoeppelmeier.bsky.social @unibe.ch

www.nature.com/articles/s41...

#ICP15 #pleanery speakers across five themes.

#ICP15 #registration and abstract submission deadlines are on 30th April -👇🏼
www.icp15.com/news/registr...

👇🏼 our #plenary #speakers across five themes of #paleoceanography and #paleoclimatology will share new research, ideas and future directions of the field and aims to inspire you all!

Uni Bern: Postdoc position: “Coupled Earth System Modeling” (2 years)

Together with Beni Stocker @stineb.bsky.social we have an open postdoc position (2yr with possibility of extension) in coupled Earth system modelling with a focus on dynamic global vegetation modelling.
ohws.prospective.ch/public/v1/jo...
Get in touch if you are interested.

Trump’s draft budget eviscerates weather and climate tracking and research | CNN The move would devastate weather and climate research even as weather is becoming more erratic and extreme, and would cripple the US industries — including agriculture — that depend on free, accurate ...

The Trump administration plans to eliminate the research arm of National Oceanic and Atmospheric Administration, close all weather and climate labs and eviscerate its budget along with several other NOAA offices, according to internal documents obtained by CNN.

#ICP15 announces speakers for #ocean ocean-climate dynamics: (left to right) Cristiano M Chiessi, Sophie Hines, Frerk Poeppelmier and Xu Zhang

#ICP15 announces #invited #plenary #speakers on #ocean-climate dynamics
Cristiano Chiessi
Sophie Hines @whoi.edu
@fpoeppelmeier.bsky.social Margit Simon @bjerknes.bsky.social
And Xu Zhang @bas.ac.uk

📢 Postdoc Opportunity: Ocean Tipping Points & Impacts!

We're hiring a postdoc in my group at the University of Bern, Switzerland, to study ocean tipping points and their impacts. The position is part of HEurope project TipESM (@tipesm.bsky.social). Feel free to reach out with any questions. 🌊

Only about two weeks left to apply to the open postdoc position.
Get in touch with @stineb.bsky.social or myself, if you are interested.

We are hiring! Full details at the link below. We are looking for 2 postdocs to work on reconstructing past sea surface temperatures and sea ice distributions as part of the "Past 2 Future" consortium seeking to improve climate models with palaeoclimate data durham.taleo.net/careersectio...

Uni Bern: Postdoc position: “Next Generation Bern Earth System Model” The University of Bern is seeking a highly motivated postdoctoral researcher for a two-year position in Earth System Modeling with a focus on land vegetation dynamics, jointly hosted by the Climate an...

Together with @fpoeppelmeier.bsky.social, we have an open 2-year postdoc position on Next Generation Bern Earth System Model at University of Bern and the Oeschger Centre.

ohws.prospective.ch/public/v1/jo...

Abstract deadline has been extended to 10th December!
www.pages2025.org.cn/Data/View/326

Only a few days left to submit an abstract to next years PAGES OSM in Shanghai. Don't miss this opportunity!
www.pages2025.org.cn

Only one week left to submit an abstract to next years PAGES Open Science Meeting!

Only about two week left to submit your abstract for the PAGES OSM 2025 in Shanghai. If you are interested in tipping points and rapid climate change, please consider submitting to session 22. #PAGES25 #OSM25

Uni Bern: PhD student: “Seamlessly simulating climate from the past into the future” Climate and Environmental Physics is a division of the Physics Institute of the University of Bern, Switzerland. We are committed to understand the processes of Earth System on time scales from season...

Only a few days left to apply to the open PhD position in my group.
Updated link to apply: ohws.prospective.ch/public/v1/jo...

Climate Physics DPhil projects in climate physics

Advertising for a PhD position at Oxford working with me and Tad Komacek. Project is on climate modelling using automatic differentiation with Enzyme in SpeedyWeather.jl applied to Earth and exoplanets. Plenty of space for ML/GPU/HPC/data visualisation projects within that PhD position too!

About two weeks left to apply to the open PhD position in my group on developing a paleo-informed fast Earth system model to better predict future climate change.
Please get in touch if you're interested.

Uni Bern: PhD student: “Seamlessly simulating climate from the past into the future” Climate and Environmental Physics is a division of the Physics Institute of the University of Bern, Switzerland. We are committed to understand the processes of Earth System on time scales from season...

📌I have an open PhD position funded for 4 years on the topic of performing long-term climate simulations running seamlessly from the past into the future, including proxy comparisons. Get in touch if you are interested.📌
ohws.prospective.ch/public/v1/jo...

Uni Bern: PhD student: “Seamlessly simulating climate from the past into the future” Climate and Environmental Physics is a division of the Physics Institute of the University of Bern, Switzerland. We are committed to understand the processes of Earth System on time scales from season...

📌I have an open PhD position funded for 4 years on the topic of performing long-term climate simulations running seamlessly from the past into the future, including proxy comparisons. Get in touch if you are interested.📌
ohws.prospective.ch/public/v1/jo...

✨The deadline to apply to the open postdoc position in my group is tomorrow.✨

Are you interested in climate tipping points and considering to go to next year's #PAGES25 #OSM25? Why not submit an abstract to our session 22: Understanding Thresholds, Tipping Points, and Abrupt Climate Change Across Different Spatial-Temporal Scales?
www.pages2025.org.cn/Data/List/Se...

Are you interested in climate tipping points and considering to go to next year's #PAGES25 #OSM25? Why not submit an abstract to our session 22: Understanding Thresholds, Tipping Points, and Abrupt Climate Change Across Different Spatial-Temporal Scales?
www.pages2025.org.cn/Data/List/Se...

Only two weeks left to apply to the open postdoc position in my group on improving a fast Earth system model and performing simulations on glacial-interglacial timescales.
Feel free to reach out to me if you are interested in the position.

💡I have an open postdoc position (2 yr, with possibility of extension) on advancing fast Earth system models and performing long-term transient simulations on glacial-interglacial cycles working towards paleo-informed future projections:
www.climate.unibe.ch/unibe/portal...

🦖I'm readvertising a PhD project at Bristol applying B isotopes to Cretaceous Ocean Anoxic Events as part of the @petrarch-project.bsky.social . Deadline April 12th, starts mid-September. See www.bristol.ac.uk/media-librar... for details! RTs (or RBSs?) appreciated.