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Frerk Pöppelmeier

@fpoeppelmeier.bsky.social

Ocean modeller and marine geochemist at University of Bern. Interested in ocean physics/chemistry and climate change of the past and future.

24 Posts661 Follower173 Folgt
Frerk Pöppelmeier@fpoeppelmeier.bsky.social · 3mo ago

✨Open PhD student position✨ I'm looking for a PhD student in biogeochemical modelling of past abrupt changes. The PhD candidate will explore interactions of rapid ocean circulation changes with marine biogeochemistry during past abrupt climate change. Apply by 31 May. jobs.unibe.ch/job-vacancie...

PhD Student in Earth System Modelling - Universität Bern

Universität Bern is looking for PhD Student in Earth System Modelling

jobs.unibe.ch

St Andrews Earth & Environmental Sciences@earthscista.bsky.social · 8mo ago

📣 We seek to appoint a Chair (with rank of professor) within the School of Earth & Environmental Sciences. The successful candidate will be an outstanding scholar of international standing in the field. 🗓 Closing Date: 23 March 2026 Full details: www.vacancies.st-andrews.ac.uk/Vacancies/I/...

Chair in Earth Sciences - AC2672

Chair in Earth Sciences - AC2672, Earth and Environmental Sciences Salary: Grade 9/Negotiable Start Date: September 2026 , <p style="margin-right: 22.7pt; text-align: justify;"><span style="color: bl...

vacancies.st-andrews.ac.uk

Nature Geoscience@natgeosci.nature.com · 8mo ago

⚒️ Article: Antarctic Bottom Water progressively filled more of the deep Southern Ocean through the last deglaciation, potentially contributing to the increase in atmospheric CO2 www.nature.com/articles/s41...

Expansion of Antarctic Bottom Water driven by Antarctic warming in the last deglaciation - Nature Geoscience

Antarctic Bottom Water progressively filled more of the deep Southern Ocean through the last deglaciation, potentially contributing to the increase in atmospheric CO2, according to neodymium isotope r...

nature.com

Andreas Schmittner@andreasschmittner.bsky.social · 8mo ago

New publication: how does a collapse of the Atlantic Meridional Overturning Circulation (AMOC) affect carbon and d13C cycles in the ocean? doi.org/10.1029/2025... doi.org/10.1029/2025...

Impact of Atlantic Meridional Overturning Circulation Collapse on Carbon‐13 Components in the Ocean

Simulated collapse of the Atlantic Meridional Overturning Circulation affects atmospheric CO2 ${\text{CO}}_{2}$ and δ13CCO2 ${C}_{\mathit{CO2}}$ Largest effect on ocean δ13CDIC ${C}_{\mathit{DIC}...

doi.org

Zeke Hausfather@zekehausfather.com · 9mo ago

A new Nature paper accompanying the Global Carbon Budget finds that the land and ocean sinks are 25% smaller and 7% smaller, respectively, than they would have been without the effects of climate change over 2015-24:

Emerging climate impact on carbon sinks in a consolidated carbon budget | Nature

Despite the adoption of the Paris Agreement ten years ago, fossil CO2 emissions continue to rise, pushing atmospheric CO2 levels to 423 ppm in 2024 and driving human-induced warming to 1.36°C, within years of breaching the 1.5°C limit 1,2. Accurate reporting of anthropogenic and natural CO2 sources and sinks is a prerequisite to tracking the effectiveness of climate policy and detecting carbon sink responses to climate change. Yet notable mismatches between reported emissions and sinks have so far prevented confident interpretation of their trends and drivers 1. Here, we present and integrate recent advances in observations and process understanding to address some long-standing issues in the global carbon budget estimates. We show that the magnitude of the natural land sink is substantially smaller than previously estimated, while net emissions from anthropogenic land-use change are revised upwards 1. The ocean sink is 15% larger than the land sink, consistent with new evidence from oceanic and atmospheric observations 3,4. Climate change reduces the efficiency of the sinks, particularly on land, contributing 8.3 ± 1.4 ppm to the atmospheric CO2 increase since 1960. The combined effects of climate change and deforestation turn Southeast Asian and large parts of South American tropical forests from CO2 sinks to sources. This underscores the need to halt deforestation and limit warming to prevent further loss of carbon stored on land. Improved confidence in assessments of CO2 sources and sinks is fundamental for effective climate policy.

nature.com

Ian Hall@ianhall.bsky.social · 10mo ago

Destabilization of Earth system tipping elements (Review) suggesting key Earth system tipping points - like the Greenland Ice Sheet, Amazon rainforest, and AMOC - are losing stability and nearing critical thresholds Interactions may mask warning signs www.nature.com/articles/s41...

Destabilization of Earth system tipping elements - Nature Geoscience

A review of observation-based evidence suggests that four interconnected Earth system tipping elements have moved towards their critical thresholds, highlighting the need for better monitoring and increased mitigation efforts.

nature.com

Prof Michael Meredith 🌊🧪🥼❄️@oceanandice.bsky.social · last yr.

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!

Royal Society Publishing@royalsocietypublishing.org · last yr.

Are you a scientist with an interest in #ClimateChange and Antarctica? This September, join a team of leading oceanographers & climate scientists from @bas.ac.uk for a scientific meeting at the Royal Society: royalsociety.org/science-even... @oceanandice.bsky.social @krhendry.bsky.social

Thomas Bauska@tinyicybubbles.bsky.social · last yr.

🚨--- 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/...

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, &delta;13C&ndash;CO2, CH4, and N2O, this study provides carbon isotope constraints on a sizeable, centennial...

pnas.org

CNN@cnn.com · last yr.

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.

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 ...

cnn.com

Thomas Frölicher@froeltho.bsky.social · last yr.

📢 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. 🌊

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