Is global warming tipping key Atlantic ocean currents towards ‘collapse’? ✍️ @ceciliakeating.carbonbrief.org 🎨 @tomoprater.carbonbrief.org and Kerry Cleaver Read here ➡️ buff.ly/mgaIBvM
Jens Terhaar
@polarocean.bsky.social
Father of 3, ocean biogeochemical modeller at the University of Bern, interested in high-latitude oceans, carbon cycle, ocean-climate interaction & ecosystem stressors such as ocean acidification and primary production.
🚨New paper! 🧪🌊🦑 Dr. Liqing Jiang led this synthesis of ocean carbonate chemistry. #OceanAcidification #mCDR @polarocean.bsky.social @jens-d-mueller.bsky.social @sivlauvset.bsky.social @jhauck.bsky.social @jpgattuso.bsky.social @oceancarbon.bsky.social essd.copernicus.org/articles/18/...
Synthesis of data products for ocean carbonate chemistry
Abstract. As the largest active carbon reservoir on Earth, the ocean is a cornerstone of the global carbon cycle, playing a pivotal role in modulating ocean health and the Earth's climate system. Unde...
essd.copernicus.org
Come join us! PhD position at @unibergen.bsky.social and @bjerknes.uib.no on freshwater transport from the Arctic Ocean and its impacts on the Nordic Seas and subpolar overturning circulation. The position is part of the national Arctic Ocean 2050 program. www.jobbnorge.no/en/available...
PhD Research Fellow in physical oceanography (295159) | University of Bergen
Job title: PhD Research Fellow in physical oceanography (295159), Employer: University of Bergen, Deadline: Monday, March 16, 2026
jobbnorge.no
Interested in learning about the AMOC (Atlantic Meridional Overturning Circulation 🌊), its current state, and what a potential shutdown could mean? @cassouman40.bsky.social and I discussed these questions in a debate moderated by Amal Laoui on @tv5monde.bsky.social (in French) 👇
Réchauffement climatique : "Les humains, on adore se faire peur" (Christophe Cassou)
YouTube video by TV5MONDE Info
youtube.com
Excited to convene the upcoming EGU webinar on "Mental Health in Academia: Obstacles, Advocacy and Inclusion" on 9 February at 16:00 CET. Open to all. 👉 Register here: www.egu.eu/webinars/694... @egu.eu @egubg.bsky.social @anabastos.bsky.social @elsa-abs.bsky.social
JOB ALERT! @vliz.be is recruiting a Data Engineer to work in a wide-ranging role to help coordinate global SOCAT activities. Full details: vliz.be/en/jobs/vliz...
VLIZ recruits: SOCAT Data Engineer
vliz.be
🌊📉 Sea surface temperatures have… come back down. After the big global jump in 2023/24, SSTs are now back at below pre-jump levels in November (climatereanalyzer.org/clim/sst_dai...). I tried to unpack this in the thread that is linked here 👇 bsky.app/profile/did:...
Climate Reanalyzer
climatereanalyzer.org
Jens Terhaar@polarocean.bsky.social · last yr.Why have the sea surface temperature suddenly risen in 2023/24? 🌊 Is it true that climate models cannot simulate such SST jumps? What is common to such jumps? How will SSTs evolve over the next months and years? Are we in uncharted territory? More from our recent study in Nature is here👇
🌊📉 Sea surface temperatures have… come back down. After the big global jump in 2023/24, SSTs are now back at below pre-jump levels in November (climatereanalyzer.org/clim/sst_dai...). Climate surprise or expected? What role does climate variability play? Let’s try to unpack 👇
1,600+ fossil fuel lobbyists at COP30, outnumbering every delegation except Brazil This isn’t ‘dialogue’; it’s the industry responsible for the crisis hijacking the negotiations meant to stop it If this doesn’t make you furious, you’re not paying attention www.theguardian.com/environment/...
Fossil fuel lobbyists outnumber all Cop30 delegations except Brazil, report says
One in every 25 participants at 2025 UN climate summit is a fossil fuel lobbyist, according to Kick Big Polluters Out
theguardian.com
By linking Antarctic sea ice, cloud cover, deep ocean temperatures, and global warming, our new study led by @linusvogt.bsky.social finds that ocean heat uptake and thermal sea level rise by 2100 could be 3–14% higher, and global surface warming 3–7% greater than previously thought👇
Linus Vogt@linusvogt.bsky.social · 10mo ago🚨🌊 New highlight paper out today in Earth System Dynamics! We find an observational constraint implying more future global ocean heat uptake, cloud feedback, and warming than the CMIP6 mean. This contrasts with previous estimates based on past warming trends. 🔗 esd.copernicus.org/articles/16/...
And the associated press release for the highlight paper by Earth System Dynamics: www.egu.eu/news/1505/an...
Antarctic Sea ice emerges as key predictor of accelerated ocean warming
<p>A major international study has identified Antarctic sea ice as a critical predictor of how much heat Earth’s oceans will absorb this century, with major implications for global warming projections...
egu.eu
Jens Terhaar@polarocean.bsky.social · 10mo agoFuture atmospheric and ocean warming over the 21st century might be larger than previously expected based on a new study by @linusvogt.bsky.social Linus & I developed the idea during Linus research visit with me at @whoi.edu and turned it then into this paper: esd.copernicus.org/articles/16/...
🚨🌊 New highlight paper out today in Earth System Dynamics! We find an observational constraint implying more future global ocean heat uptake, cloud feedback, and warming than the CMIP6 mean. This contrasts with previous estimates based on past warming trends. 🔗 esd.copernicus.org/articles/16/...
Increased future ocean heat uptake constrained by Antarctic sea ice extent
Abstract. The ocean takes up over 90 % of the excess heat stored in the Earth system as a result of anthropogenic climate change, which has led to sea level rise and an intensification of marine extre...
esd.copernicus.org
And of course, I forgot the wave 🌊 to add it to the oceanography feed. So here is the post about this paper, which was published today, and highlights how the deep ocean impacts future atmospheric and ocean warming. We also show that future warming might be underestimated by past studies!
Jens Terhaar@polarocean.bsky.social · 10mo agoFuture atmospheric and ocean warming over the 21st century might be larger than previously expected based on a new study by @linusvogt.bsky.social Linus & I developed the idea during Linus research visit with me at @whoi.edu and turned it then into this paper: esd.copernicus.org/articles/16/...
Future atmospheric and ocean warming over the 21st century might be larger than previously expected based on a new study by @linusvogt.bsky.social Linus & I developed the idea during Linus research visit with me at @whoi.edu and turned it then into this paper: esd.copernicus.org/articles/16/...
Increased future ocean heat uptake constrained by Antarctic sea ice extent
Abstract. The ocean takes up over 90 % of the excess heat stored in the Earth system as a result of anthropogenic climate change, which has led to sea level rise and an intensification of marine extre...
esd.copernicus.org
It's scary how fast the earth is warming. For a long time, the 🌊 ocean surface was warming at a slower 🐌 rate but the warming rate appears to have caught up 🐇. ➡️ In our study about the jump in SSTs, we also estimated a 0.27°C per decade warming of global SSTs (www.nature.com/articles/s41...)
Record sea surface temperature jump in 2023–2024 unlikely but not unexpected - Nature
Observations and climate models suggest that the global sea surface temperature jump in 2023–2024 was not unexpected and would have been nearly impossible without anthropogenic warming.
nature.com
Zeke Hausfather@zekehausfather.com · last yr.Our new paper updating key metrics in the IPCC is now out, and the news is grim: ⬆️ Human induced warming now at 1.36C ⬆️ Rate of warming now 0.27C / decade ⬆️ Sharp increase in Earth's energy imbalance ⬇️ Remaining 1.5C carbon budget only 130 GtCO2 essd.copernicus.org/...
Informative and interesting news feature in @nature.com about the AMOC & large existing uncertainties about its past & future by @timkalvelage.bsky.social who accompanied oceanographer Kjetil Våge from @bjerknes.uib.no on the Norwegian ice-breaker RV Kronprins Haakon. www.nature.com/articles/d41...
Is a monster web of ocean currents headed for collapse? The race is on to find out
Research ships rarely brave the Greenland Sea in winter. Early this year, scientists ventured into the ice-covered waters to capture crucial data about the planet’s future.
nature.com
Updated Climate Visuals (1) Warming stripes for atmosphere and ocean (2) Climate indicators (adding land humidity for 2024) (3) UK climate indicators (adding some 2024 data) ed-hawkins.github.io/climate-visu...
We explained what caused the unusual winds (persistence of NAO- conditions and blocking syste over the British Isles) and showed also that the key factor that boosted this event is the long-term stratification which is linked to anthropogenic activities.
If I can add something. Here we demonstrate that NATL warming was due to natural variability. The event was excepted and in line with climate projections (return period around 10 years). The processes are well known and we can explain it. www.nature.com/articles/s43...
Internal variability effect doped by climate change drove the 2023 marine heat extreme in the North Atlantic - Communications Earth & Environment
The 2023 North Atlantic marine heatwave was driven by an extreme phase of internal atmospheric variability but would have been impossible without the doping effect of anthropogenic warming, according ...
nature.com
Important new article in @nature.com: "...the record-shattering jump in surface ocean temperatures in 2023–2024 was an extreme event after which surface ocean temperatures are expected to revert to the expected long-term warming trend." #TruthIsBadEnough (h/t @flowinguphill.bsky.social)
Jens Terhaar@polarocean.bsky.social · last yr.Why have the sea surface temperature suddenly risen in 2023/24? 🌊 Is it true that climate models cannot simulate such SST jumps? What is common to such jumps? How will SSTs evolve over the next months and years? Are we in uncharted territory? More from our recent study in Nature is here👇
One thing that really bothered me about this discussion was the number of speakers who insisted that the gov attacks on US science are "unprecedented". They're not. Nazi Germany, the Soviet Union, Iran, Turkey & more all purged their academy. Surely learning from that history is essential. #EGU25
Helen Czerski@helenczerski.bsky.social · last yr.Five minutes to go and already a very full room here for the final session of #EGU25 , a last-minute debate on “How should the global geoscience community respond to attacks on science”, focussed on the US. It’s so incredibly sad that this is even necessary. But there is clearly will to act.
Much of the debate we've seen so far has posed Trump's attacks on science as an American problem - but it's not. It's a global problem. The stark reality is that US research underpins much of the world's science - and it's not just money. /1 www.nytimes.com/live/2025/05...
Trump’s plan proposes sweeping cuts to climate and renewable energy programs.
nytimes.com
🧵 There’s been ongoing debate about the AMOC and what models really say about its collapse risk this century and beyond. Here’s a short thread responding to Stefan Rahmstorf’s recent comments on Science in Action (BBC) 🌊
Let's use bgcArgo floats to evaluat ocean biogeochemistry models! Simone Le Chevere: Evaluation of the interior ocean ventilation of biogeochemical tracers in a global ocean model using observation-based metrics Thursday, 16:48–16:58, Room 1.34 #EGU25 @awi.de @erc.europa.eu #OceanPeak
#EGU25 🌊 Come have a chat now and before 4pm at X4.37, I have cookies! 🗣Additionally I now have a last-minute talk at 17:43 today in room 1.34 in the same session
Yona Silvy@yonasilvy.bsky.social · last yr.2. A poster on the ocean heat redistribution response to long temperature stabilization simulations at different global warming levels —> Thursday 14:00-15:45 X4.37 in OS1.13 (ocean carbon/heat session) meetingorganizer.copernicus.org/EGU25/EGU25-...
It appears that there have unfortunately been some misunderstandings about our recent paper about the Atlantic Meridional Overturning Circulation (www.nature.com/articles/s41...) at #EGU25. I have tried to clarify these here: www.linkedin.com/feed/update/...
Atlantic overturning inferred from air-sea heat fluxes indicates no decline since the 1960s - Nature Communications
The AMOC is crucial for the global ocean overturning circulation and controls the climate around the North Atlantic. Here, the authors use 24 Earth System Models from the CMIP6 to demonstrate tha...
nature.com
Yesterday, I received the Ocean Science Outstanding Early Career Scientist Award at #EGU25. I am very grateful for this recognition about my work on the ocean carbon cycle, ocean biogeochemistry, earth system modeling, ocean-climate interactions, climate projections, and physical oceanography.
🌊 Great medal and award lecture at #EGU25! Congrats to @tatianailyina.bsky.social for receiving the Fridtjof Nansen Medal and @polarocean.bsky.social for the Outstanding ECS Award for their outstanding work in oceanography👏 Truly great scientists! Check out the interviews: bit.ly/3ScAwQp @egu.eu
Our Union Symposium at #EGU25 @egu.eu was moving, intense, but hopefully also empowering. it is clear that there is a lot to do, but as a community we can start to change things.
Ana Bastos@anabastos.bsky.social · last yr.Don’t miss the Union symposium #EGU25 @egu.eu on mental health across career stages in the geosciences, with contributions by Nicolas Rüsch, Lucia Cappelletti, Timo Vesala and Anita di Chiara 16:15 in Room E1
At #EGU25, I gave an interview with respect to the Ocean Sciences @egu.eu #EarlyCareer Award. It is about my past, present and future science and also being a parent in academia! If you want to hear more, please come to my medal lecture tomorrow: meetingorganizer.copernicus.org/EGU25/sessio...
Jens Terhaar Receives the Division Outstanding Early Career Scientist Award – About His Career and Work
Jens Terhaar received the 2025 Division Outstanding Early Career Scientist Award for his research on the ocean carbon cycle and its effects on climate. We spoke with him about his career path and the ...
blogs.egu.eu