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Thomas Frölicher

@froeltho.bsky.social
3.2K followers 528 following 73 posts

Professor in Climate and Environmental Physics @unibern, Lead Author @IPCC_CH SROCC, Views are my own

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Reposted by Thomas Frölicher
Dr. Raphael Marschall @spacemarschall.net · 26/01/2026
Hi y'all You still have a few days to apply for our open professor position in planetary science in Bern, Switzerland. See more details below! For any questions, feel free to reach out to me. 🔭🧪⚛️#planetSci
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Prof. Sonia I Seneviratne @soniaseneviratne.bsky.social · 01/12/2025
Great start of @ipcc.bsky.social #AR7 main reports with 1st ever joint first lead author meeting (#LAM1) of Working Groups I, II & III! Fantastic atmosphere! Amazing organisation of technical support units, with >600 participants! We also had a get-together of the Switzerland-based participants!
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Natacha Le Grix @natlegrix.bsky.social · 24/11/2025
This Thursday at 10am CET, join us for Climate Coffee! We'll talk about marine heatwaves, high acidity and low oxygen events - big threats to marine ecosystems 🔥 🐋 Findings from a study co-authored with @froeltho.bsky.social and Friedrich Burger 🙌 Link for registration below
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Thomas Frölicher @froeltho.bsky.social · 23/10/2025
Netflix schauen, Tropenfrüchte essen, Billigmode tragen – die meisten Treibhausgas-Emissionen entstehen durch importierte Güter und Dienstleistungen. Eine Tagung an der Universität Bern rückt diese «grauen Emissionen» ins Zentrum. Donnerstag, 30. Oktober. www.uniaktuell.unibe.ch/2025/klimasc...
uniaktuell.unibe.ch
Klimaschutz im Graubereich
Netflix schauen, Tropenfrüchte essen, Billigmode tragen – die meisten Treibhausgas-Emissionen entstehen durch importierte Güter und Dienstleistungen. Eine Tagung an der Universität Bern rückt diese «g...
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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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Prof. Stefan Rahmstorf @rahmstorf.bsky.social · 01/10/2025
You can still apply! If you know someone who might be interested, tell her or him about this! 🌊
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Zack Labe @zacklabe.com · 11/09/2025
The massive extreme marine heatwave continues to stretch across the entire northern Pacific Ocean. In fact, the magnitude of the sea surface temperature anomalies even grew in August 2025 compared to earlier in the summer. Yikes... 🫠 Data from OISSTv2.1 (psl.noaa.gov/data/gridded...). 🌊
Global map showing sea surface temperature anomalies in August 2025 relative to 1982 to 2010. Most areas are warmer than average. Red is shown for warmer sea surface temperatures, and blue is shown for colder sea surface temperatures. Data is from NOAA OISSTv2.1.
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Prof. Stefan Rahmstorf @rahmstorf.bsky.social · 09/09/2025
Here‘s a rare and excellent career opportunity for outstanding physical oceanographers at the Potsdam Institute (PIK) and the University of Potsdam, in beautiful surroundings just outside Berlin. Tell qualified friends or colleagues! 🌊 www.nature.com/naturecareer...
nature.com
Full Professorship (W3) for Physics of the Oceans - Potsdam-Mittelmark, Brandenburg (DE) job with Universität Potsdam | 12844582
Founded in 1991, the University of Potsdam has firmly established itself in the scientific landscape and has become an outstanding economic factor ...
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Thomas Frölicher @froeltho.bsky.social · 10/09/2025
🌊 Nacht der Forschung 2025 | University of Bern 🌊 What a fantastic evening! Thank you to the entire ocean modeling team and friends for their incredible effort. For one night, the Kuppelraum transformed into a "true" ocean, full of energy, visited by many, and filled with inspiring conversations.
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Universität Bern @unibe.ch · 19/08/2025
Der Weltklimarat ‪@ipcc.bsky.social‬ hat Thomas Frölicher #unibern zum Koordinierenden Leitautor der Arbeitsgruppe I des nächsten Weltklimaberichts ernannt. Er leitet das Kapitel über #Kipppunkte im Erdsystem. Mehr über seine Forschung: www.uniaktuell.unibe.ch/2025/uno_oze.... @froeltho.bsky.social
Thomas Frölicher
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Juliano Palacios A. @julianop.bsky.social · 30/07/2025
🚨 Our latest paper on how #climatechange will affect the distribution of shared fish stocks like #tuna and #billfishes across international borders is out now! 🐟🌍 Read the #OpenAccess article & IOF story below 👇 www.science.org/doi/10.1126/...
science.org
Climate change drives shifts in straddling fish stocks in the world’s ocean
As straddling stocks shift between EEZs and the high seas due to climate change, fisheries will require adaptive management.
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Universität Bern @unibe.ch · 23/06/2025
8 Jahre, 8 #Hitzerekorde im #Ozean – 2025 dürfte der nächste folgen. Klimaforscher Thomas Frölicher erklärt, warum das auch die #Schweiz betrifft und wo dennoch Hoffnung besteht: www.uniaktuell.unibe.ch/2025/uno_oze.... @froeltho.bsky.social
Ozean am Limit: Die globale Ozeantemperatur hat acht Jahre in Folge den Vorjahresrekord übertroffen – auch 2025 dürfte ein neuer Höchstwert folgen.
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Thomas Frölicher @froeltho.bsky.social · 10/06/2025
Have you ever wondered why a landlocked country like Switzerland should care about the health of the ocean? Check out our new 2-pager👇 Frölicher, T., & Jaccard, S. (2025). Why Switzerland Needs a Healthy Ocean: Global Interdependence and National Responsibility. Zenodo. lnkd.in/eMp5hN5d
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Prof Alessandro Tagliabue @altagliabue.bsky.social · 09/06/2025
New work by Lester Kwiatkowski and colleagues suggests that the reduction in coral reef calcification due to climate change may end up enhancing the ocean carbon sink by up to 1.25 Gt CO2 yr-1 by mid century (by even more by 2300) 🌊 www.pnas.org/doi/full/10....
pnas.org
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
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Jean-Pierre Gattuso @jpgattuso.bsky.social · 07/06/2025
A large number of products are available here: kdrive.infomaniak.com/app/share/20... - Recommendations to Heads of State and Governments, summary in 6 UN languages - Urgent call for coral reefs - Policy brief "Knowledge for a thriving ocean" - Manifesto - Correspondence on US federal cuts 🌊 #OOSC
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Jean-Pierre Gattuso @jpgattuso.bsky.social · 07/06/2025
‼️ Please disseminate widely: the manifesto of the One Ocean Science Congress #OOSC is open for digital signature: forms.ifremer.fr/pdg/oosc-man... #ScienceForTheOcean 🌊
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Jean-Pierre Gattuso @jpgattuso.bsky.social · 07/06/2025
My co-chair François Houllier and I are delighted with this resounding success, after 2 years of preparation and many hurdles to overcome. The recommendations will be presented to Heads of State and Governments tomorrow, the day before #UNOC starts. #OOSC #ScienceForTheOcean
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Thomas Frölicher @froeltho.bsky.social · 03/06/2025
The One Ocean Science Congress has started! Exciting four days ahead #OOSC25
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Thomas Frölicher @froeltho.bsky.social · 28/05/2025
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...
nature.com
US federal cuts threaten international ocean science and diplomacy - Nature Ecology & Evolution
Nature Ecology & Evolution - US federal cuts threaten international ocean science and diplomacy
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Met4Cast @met4cast.net · 25/05/2025
This is phenomenal. Sea surface temperatures are >5C above average to the west of the UK and around Iceland. It's the strongest area of anomalous warmth on the planet at the moment. It's the warmest in recorded history for northwest Europe.
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Andy Revkin 🌎 ✍🏼 🪕 ☮️ revkin.substack.com @revkin.bsky.social · 20/05/2025
#standupforscience2025. The sidewalk open house and NASA GISS swag giveaway is on at 2880 Broadway NY NY til 4 pm ET. Photos from a NASA scientist. 🌎🧪 matters.
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Thomas Frölicher @froeltho.bsky.social · 19/05/2025
New study led by @lilianschuster.bsky.social finds that temporarily overshooting +1.5°C leads to irreversible glacier loss and long-term changes in water runoff. Some fast-responding glaciers may regrow, but this could lead to water scarcity centuries later, a phenomenon called ‘trough water’.👇
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Thomas Frölicher @froeltho.bsky.social · 08/05/2025
Sixty-six percent of the entire planet is deep ocean (≥200 m), and a new study shows that less than 0.001%, a total area approximately a tenth of the size of 🇨🇭 has been visualized observed. There is soooo much to be discovered! www.science.org/doi/10.1126/...
science.org
How little we’ve seen: A visual coverage estimate of the deep seafloor
In decades of deep-sea exploration, humans have observed only 0.001% of the deep seafloor, leaving 66% of planet Earth unseen.
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Thomas Frölicher @froeltho.bsky.social · 07/05/2025
Really enjoyed the discussion on communicating tipping points at NASA GISS! It’s a tough topic, but I agree with the panel—we can do better than we have so far. Thanks for organizing it @aromanou.bsky.social and colleagues!
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Thomas Frölicher @froeltho.bsky.social · 01/05/2025
Compound events in the (subsurface) ocean and how they change under climate change. 👇
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Daniele Iudicone @diudicone.bsky.social · 27/04/2025
Here a new point of view on the response of the global ocean to climate change. In short: we cannot separate temperature from the rest when we look at trends in the dynamics. It is just a starting point. With the great Bruno Buongiorno Nardelli. www.science.org/doi/10.1126/...
science.org
A dynamical geography of observed trends in the global ocean
An empirical analysis of upper ocean physics reveals the factors that shape the seascape evolution in response to global warming.
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Forum Basiliense @forumbasiliense.bsky.social · 27/04/2025
Am 29. April sprechen Alexander Proelss und Thomas Frölicher über „Meeres-Wissenschaften und Internationales Recht im Klimawandel“. 🗓️ 29. April | 🕓 16:15–17:45 📍 Hörsaal 001, Kollegienhaus, Universität Basel
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Yona Silvy @yonasilvy.bsky.social · 27/04/2025
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-...
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Yona Silvy @yonasilvy.bsky.social · 27/04/2025
In the train to Vienna for #EGU25, first international conference since maternity leave! I will present: 1. AERA-MIP results on emission pathways and budgets compatible with 1.5 and 2C global warming —> Tuesday at 14:05 in CL4.13 (TCRE/ZEC session) meetingorganizer.copernicus.org/EGU25/EGU25-...
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Regina R Rodrigues @rrrocean.bsky.social · 16/04/2025
🌊🌡️ In this study published @natcomms.nature.com, we analysed the simultaneous occurrence of marine heatwaves with extreme events of high acidity and net primary productivity in the equatorial and South Atlantic. Why is this important? A short 🧵... www.nature.com/articles/s41...
nature.com
Extreme compound events in the equatorial and South Atlantic - Nature Communications
The co-occurrence of marine heatwaves with extremes of high acidity and low chlorophyll concentrations has increased dramatically over the past two decades in the equatorial and South Atlantic. El Niñ...
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Thomas Frölicher @froeltho.bsky.social · 16/04/2025
Compound event frequency strongly increased over the past two decades in the South Atlantic. New study led by @rrrocean.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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Thomas Frölicher @froeltho.bsky.social · 07/04/2025
Angriff auf Wissenschaft – US-Gelder in Forschungs­projekten – Uni Bern nervös www.bernerzeitung.ch/universitaet...
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Jean-Pierre Gattuso @jpgattuso.bsky.social · 30/03/2025
Tonight the Eiffel Tower turned blue to mark an SOS for the Ocean! ahead of #UNOC3 and the #OneOceanScience Congress in Nice, June 2025. 🌊 sos-ocean.com
Eiffel Tower in blue
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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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Thomas Frölicher @froeltho.bsky.social · 29/03/2025
Enjoyed the stimulating discussions in Paris at the 3rd International Scientific Committee meeting for the One Ocean Science Congress. Excited for the Congress in Nice this June & hopefully strong, science-based outcomes from #UNOC3! Thanks @jpgattuso.bsky.social & François Houllier for organizing!
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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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Thomas Frölicher @froeltho.bsky.social · 26/03/2025
Exciting hours ahead: Introducing the Tesla coil today to the students @unibe.ch .
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Jean-Pierre Gattuso @jpgattuso.bsky.social · 26/03/2025
This is a busy and exciting week for the One Ocean Science Congress - Programme published: meetingorganizer.copernicus.org/OOS2025/prog... - The International Scientific Committee meets over 3 days to finalize planning and work on outcomes #OOSC #OneOceanScience @cnrs.fr @ifremer.bsky.social 🌊
Logo of the One Ocean Science Congress
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Thomas Frölicher @froeltho.bsky.social · 18/03/2025
Temperaturanstieg der Meere: Schweizer lösen Rätsel www.20min.ch/story/uni-be...
20min.ch
Meere werden immer heisser: Schweizer Forscher lösen das Rätsel
Die globale Meereserwärmung erreichte jüngst Rekordwerte – doch eine neue Studie zeigt: Der Klimawandel allein erklärt den sprunghaften Temperaturanstieg.
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Thomas Frölicher @froeltho.bsky.social · 16/03/2025
Was bedeuten die Kürzungen bei der Wetter- und Ozeanbehörde @noaa.gov für die Wissenschaft und insbesondere für die Ozeanographie? Meine Einschätzungen im neusten #Wissenschaftsmagazin des Schweizer Radio. Vielen Dank für das Interview Katrin Zöfel. www.srf.ch/audio/wissen... @unibern.bsky.social
srf.ch
Was bedeuten Trumps Kürzungen in der Wissenschaft?
Trumps Regierung kürzt Mittel an allen Ecken und Enden. Wir zoomen rein und fragen, was die Kürzungen bei NOAA, der Wetter- und Ozeanografiebehörde bedeuten. Und: Warum Bäume ihre Blätter oft bis im F...
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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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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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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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Thomas Frölicher @froeltho.bsky.social · 05/03/2025
Had a great time teaching superconductivity to physics undergrads today! Always a pleasure having experiments accompanying theory - huge thanks to our lab experts for their great experiment preparation! #Physics #Superconductivity @unibern.bsky.social
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Thomas Frölicher @froeltho.bsky.social · 04/03/2025
This is really sad news. NOAA GFDL is one of the world's leading climate modeling centers, home to exceptional scientists. If anyone directly affected needs support, I’m happy to help. www.science.org/content/arti...
science.org
NOAA firings hit the birthplace of weather and climate forecasting
Dismissed researchers were improving severe weather predictions
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UBC Oceans @ubcoceans.bsky.social · 28/02/2025
RESEARCH: Long-term impacts of global temperature stabilization and overshoot on exploited marine species. Co-authored by Dr. William Cheung. @ubccoru.bsky.social @solvingfcb.bsky.social bg.copernicus.org/articles/22/... via @eurogeosciences.bsky.social
bg.copernicus.org
Long-term impacts of global temperature stabilization and overshoot on exploited marine species
Abstract. Global warming alters ocean conditions, which can have dramatic consequences for marine species. Yet, the centennial-scale effects and reversibility of habitat viability for marine species, ...
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Valérie Masson-Delmotte @valmasdel.bsky.social · 01/03/2025
Impacts from marine heatwaves call for proactive early warning and response strategies www.nature.com/articles/s41...
nature.com
Ocean extremes as a stress test for marine ecosystems and society - Nature Climate Change
In 2023–2024, widespread marine heatwaves associated with record ocean temperatures impacted ocean processes, marine species, ecosystems and coastal communities, with economic consequences. Despite wa...
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Valérie Masson-Delmotte @valmasdel.bsky.social · 28/02/2025
Dear US colleague scientists exposed to multiple unprecedented pressures on academic freedom, up to brutal and unfair firing, I do not know how to best help you in these horrible circumstances. You are not alone.
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