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Reposted by Jens Terhaar

Carbon Brief @carbonbrief.org · 27/04/2026

Is global warming tipping key Atlantic ocean currents towards ‘collapse’? ✍️ @ceciliakeating.carbonbrief.org 🎨 @tomoprater.carbonbrief.org and Kerry Cleaver Read here ➡️ buff.ly/mgaIBvM

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Marius Årthun @mariusarthun.bsky.social · 09/02/2026

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...

jobbnorge.no

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

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Jens Terhaar @polarocean.bsky.social · 07/02/2026

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) 👇

youtube.com

Réchauffement climatique : "Les humains, on adore se faire peur" (Christophe Cassou)

YouTube video by TV5MONDE Info

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Rebecca Varney @rebeccamayvarney.bsky.social · 29/01/2026

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

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Surface Ocean CO₂ Atlas @socatco2.bsky.social · 03/12/2025

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.be

VLIZ recruits: SOCAT Data Engineer

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Jens Terhaar @polarocean.bsky.social · 15/12/2025

🌊📉 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:...

climatereanalyzer.org

Climate Reanalyzer

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Jens Terhaar @polarocean.bsky.social · 15/12/2025

🌊📉 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 👇

Seasonal cycle of global mean daily sea surface temperatures from https://climatereanalyzer.org/clim/sst_daily/?dm_id=world2

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Prof Ian Hall @ianhall.bsky.social · 14/11/2025

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/...

theguardian.com

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

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Thomas Frölicher @froeltho.bsky.social · 02/10/2025

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👇

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Linus Vogt @linusvogt.bsky.social · 02/10/2025

🚨🌊 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/...

esd.copernicus.org

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...

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Jens Terhaar @polarocean.bsky.social · 02/10/2025

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!

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Jens Terhaar @polarocean.bsky.social · 02/10/2025

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/...

esd.copernicus.org

Increased future ocean heat uptake constrained by Antarctic sea ice extent

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Jens Terhaar @polarocean.bsky.social · 19/06/2025

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...)

nature.com

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.

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Jens Terhaar @polarocean.bsky.social · 19/06/2025

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...

nature.com

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.

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Ed Hawkins @edhawkins.org · 12/05/2025

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...

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Thibault Guinaldo @tguinaldo.bsky.social · 13/05/2025

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.

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Thibault Guinaldo @tguinaldo.bsky.social · 13/05/2025

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...

nature.com

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 ...

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Michael E. Mann @michaelemann.bsky.social · 04/05/2025

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)

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Helen Czerski @helenczerski.bsky.social · 03/05/2025

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

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Ben Sanderson @benmsanderson.bsky.social · 02/05/2025

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...

nytimes.com

Trump’s plan proposes sweeping cuts to climate and renewable energy programs.

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Jon Baker @jonbakerocean.bsky.social · 02/05/2025

🧵 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) 🌊

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Judith Hauck @jhauck.bsky.social · 28/04/2025

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

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Yona Silvy @yonasilvy.bsky.social · 01/05/2025

#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

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Jens Terhaar @polarocean.bsky.social · 01/05/2025

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/...

nature.com

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...

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Jens Terhaar @polarocean.bsky.social · 30/04/2025

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.

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Jacqueline Behncke @jacbeh.bsky.social · 29/04/2025

🌊 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

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Ana Bastos @anabastos.bsky.social · 29/04/2025

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.

Word cloud with pressure, stress, burnout, anxiety, impostor syndrome, overwhelmed, taboo standing out

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Jens Terhaar @polarocean.bsky.social · 28/04/2025

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...

blogs.egu.eu

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 ...

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Thibault Guinaldo @tguinaldo.bsky.social · 16/04/2025

Moreover, this is part of a broader framework (see @polarocean.bsky.social 's publi) in which the mutual responses of internal variability and long-term trends allow such events to occur. The study of extremes also raises the question of impacts, adaptation & anticipation tinyurl.com/2mstn48a 12/14

tinyurl.com

Jens Terhaar (@polarocean.bsky.social)

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Thibault Guinaldo @tguinaldo.bsky.social · 16/04/2025

🌊 The N.Atlantic has been experiencing extreme T°C in 2023. This situation raises a number of questions: Have we missed something? Do climate models allow us to understand such an event, or have we entered a new climate regime? We attempted to answer these questions in this study: rdcu.be/eh0e8 1/14

rdcu.be

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...

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Barack Obama @barackobama.bsky.social · 15/04/2025

Harvard has set an example for other higher-ed institutions - rejecting an unlawful and ham-handed attempt to stifle academic freedom, while taking steps to make sure students can benefit from an environment of intellectual inquiry, rigorous debate and mutual respect. Let’s hope others follow suit.

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Markus Grimmer @mgrimmer.bsky.social · 30/03/2025

Does the ocean warm when the AMOC weakens? 🌊 Our new ice-core noble-gas data say it does, at least during the last four deglaciations. A warmer ocean stores a lot of energy but also expands and has lower solubility, which has implications for CO2, sea level, and climate. doi.org/10.1029/2024...

doi.org

AMOC Modulates Ocean Heat Content During Deglaciations

First ocean heat content (OHC) record covering the last four deglaciations All studied deglaciations show millennial OHC variability anti-correlated with Atlantic meridional overturning circulati...

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Jens Terhaar @polarocean.bsky.social · 28/03/2025

A new estimate of the composite model-based estimate of the annually averaged ocean carbon sink. 🌊 This composite model-based estimate of the ocean carbon sink from 1959 to 2022 is similar in magnitude to the best estimate of the Global Carbon Budget but 70 % less uncertain.

bg.copernicus.org

Composite model-based estimate of the ocean carbon sink from 1959 to 2022

Abstract. The ocean takes up around one-quarter of anthropogenically emitted carbon and is projected to remain the main carbon sink once global temperatures stabilize. Despite the importance of this n...

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Mark Gongloff @markgongloff.bsky.social · 21/03/2025

"Today it’s university faculty, immigrants and civil servants on the enemies list. Tomorrow, it could be you. Anyone who challenges power can be transformed into a threat with frightening speed. Just ask the Jan. 6 Capitol Police" - @andrewdessler.com www.statesman.com/story/opinio...

statesman.com

As a professor and climate scientist, I'm suddenly on America's 'enemies list' | Opinion

When we are caught up in fear and anger, we miss what is happening in plain sight. We lose track of why schools are underfunded or roads are crumbling.

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Jens Terhaar @polarocean.bsky.social · 13/03/2025

A detailed interview about our recent study in @nature.com about the sudden rise in sea surface temperature (www.nature.com/articles/s41...). The interview is in German! Thank you @kathrinkuehn.bsky.social and @deutschlandfunk.de.web.brid.gy

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Kathrin Kühn @kathrinkuehn.bsky.social · 13/03/2025

Erwärmt sich die Erde schneller als erwartet? Inwiefern greifen die Klimamodelle noch? Eine neue Nature-Studie liefert erste Antworten, am Beispiel der Rekord-Ozeantemperaturen. Genauer wissen werden wir es ab Herbst - Interview mit @polarocean.bsky.social www.deutschlandfunk.de/rekord-ozean... 1/

deutschlandfunk.de

Rekord-Ozeantemperaturen: Passen die aktuellen Klimamodelle noch?

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Erich Fischer @erichfischer.bsky.social · 13/03/2025

Can climate models reproduce observed trends? The answer can be challenging. Our new review paper in Science Advances led by Isla Simpson and Tiffany Shaw @drshaw.bsky.social discusses challenges and ways forward in confronting climate models and observations. www.science.org/doi/10.1126/...

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Nature Portfolio @natureportfolio.nature.com · 12/03/2025

The large increase in sea surface temperatures in 2023-24 was anomalous, but not completely unexpected when applying climate models, according to research in Nature. go.nature.com/3R5Hmqk 🧪 🌊

This is figure 4, which shows anomalies of record-shattering jumps in SSTs in observations and climate models are mostly localized in the equatorial Pacific, North Pacific and North Atlantic.

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Dr. Jonathan Foley @globalecoguy.bsky.social · 13/03/2025

Yep. Recent warming records are not unexpected and fall within the expectations of climate models.

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Thibault Guinaldo @tguinaldo.bsky.social · 12/03/2025

🚨 🌊 Wonderful work by Jens et al on the 2023-2024 record of SST which shows that we were not in « uncharted territory » and that climate models are able to model such jump. However this record is exceptional and impossible by climate change. More to come soon

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Thomas Frölicher @froeltho.bsky.social · 12/03/2025

Key takeaways from our study on the record-breaking global sea surface temperature jump in 2023-24: • A rare 1-in-512-year event • Only possible due to human-caused global warming • Climate models capture it—no signs of unexpected climate change More details below 👇

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Jens Terhaar @polarocean.bsky.social · 12/03/2025

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👇

nature.com

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.

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Eleanor Frajka-Williams @eleanorfrajka.bsky.social · 08/03/2025

🚨**Job advert** 🚨 We are hiring a seagoing technician in Hamburg! Interested in going to sea, handling instrumentation (ship-based, moored, glider) and logistics of research-travel to remote places? See the advert - contact me with any questions. Deadline 4 April. eleanorfrajka.com/post/2025-03...

View of the back deck of the research vessel Maria S. Merian, showing the A-frame and flotation for moorings.

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Thomas Frölicher @froeltho.bsky.social · 09/03/2025

📢 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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