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@micheltsamados

Physicist, Associate Professor at CPOM, @ES_UCL. Study climate of polar regions. Also dynamics of complex systems. Main current interest : sea ice. https://www.ucl.ac.uk/earth-sciences/people/academic/dr-michel-tsamados

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17.11.2024
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Latest posts by @micheltsamados

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Anthropic Drops Flagship Safety Pledge In an abrupt shift, the companyΒ may release future AI models without ironclad safety guarantees

Oh

25.02.2026 17:56 πŸ‘ 103 πŸ” 33 πŸ’¬ 5 πŸ“Œ 15
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#ai4eo #earthobservation #artificialintelligence #ucl #climatetech #opensource #environmentalimpact #sustainability | Michel Tsamados AI can be dauntingβ€”sparking timely concerns about job displacement, data sovereignty, and surveillance. But like it or not, it is ubiquitous in research today and here to stay. As we navigate this tec...

www.linkedin.com/posts/michel...

23.02.2026 19:07 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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UCL celebrates 200 years: A landmark year begins Today, UCL marks 200 years since its foundation. Based in the heart of London, UCL is rooted in curiosity, tolerance and academic excellence. Throughout the year we will celebrate two centuries of lea...

πŸ’œ Today, @ucl.ac.uk marks 200 years since its foundation.
Throughout 2026, we will celebrate two centuries of learning and innovation and share those achievements with our global community.

➑️Discover our exciting #UCL200 programme of events and learn how you can get involved.

11.02.2026 06:55 πŸ‘ 33 πŸ” 16 πŸ’¬ 0 πŸ“Œ 1
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Should the Arctic be refrozen? | Michel Tsamados Interesting and well written article in The Economist this week on the climate intervention ideas around refreezing the Arctic. Our very own Alistair Duffey from UCL Earth Sciences and Matthew Henry d...

www.linkedin.com/posts/michel...

31.01.2026 17:41 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Tyler Fairbairn Ocean Physics
Tyler Fairbairn Ocean Physics YouTube video by tyler fairbairn

Another good video on forced and free motion with nice analogies between basketball πŸ€ and ocean physics 🌊 #GEOL0022 by the excellent Tyler Fairbairn

www.youtube.com/watch?v=XEEH...

31.01.2026 17:13 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
A photo of the front cover of issue 1666 of Private Eye magazine with the caption "on shelves now." The headline reads: β€œHappy New Fear!” The cover image shows a staged photograph of senior US political figures in suits gathered around a table in a darkened room, resembling a war-room scenario. Speech bubbles add satirical dialogue: one figure says β€œWe’ve invaded Venezuela,” another replies β€œCaracas?”, and a seated Donald Trump declares, β€œYes, I’m completely insane.” A banner at the bottom reads: β€œINSIDE: HAS TRUMP GONE BARKING MADURO?”

A photo of the front cover of issue 1666 of Private Eye magazine with the caption "on shelves now." The headline reads: β€œHappy New Fear!” The cover image shows a staged photograph of senior US political figures in suits gathered around a table in a darkened room, resembling a war-room scenario. Speech bubbles add satirical dialogue: one figure says β€œWe’ve invaded Venezuela,” another replies β€œCaracas?”, and a seated Donald Trump declares, β€œYes, I’m completely insane.” A banner at the bottom reads: β€œINSIDE: HAS TRUMP GONE BARKING MADURO?”

Happy New Fear!

The new Private Eye is out now.

07.01.2026 08:07 πŸ‘ 377 πŸ” 110 πŸ’¬ 12 πŸ“Œ 9
Line graph time series of monthly mean surface temperature anomalies for the Arctic region only. Every month is shown from 1940 to 2025. There is a long-term warming trend in all months of the year.

Line graph time series of monthly mean surface temperature anomalies for the Arctic region only. Every month is shown from 1940 to 2025. There is a long-term warming trend in all months of the year.

Line graph time series of monthly mean surface temperature anomalies for the Antarctic region only. Every month is shown from 1940 to 2025. There is a long-term warming trend in all months of the year, but less obvious than the other regions.

Line graph time series of monthly mean surface temperature anomalies for the Antarctic region only. Every month is shown from 1940 to 2025. There is a long-term warming trend in all months of the year, but less obvious than the other regions.

Comparison of monthly temperature anomalies in the #Arctic versus the #Antarctic so far in 2025 (yellow lines). The other lines show the monthly anomalies for years from 1940 (blue) to 2024 (red). Note the long-term trends through the color gradient.

Data from @copernicusecmwf.bsky.social ERA5.

28.12.2025 14:27 πŸ‘ 59 πŸ” 22 πŸ’¬ 2 πŸ“Œ 1
CΓ©dric Villani and Michel Tsamados: Is AI the doom of ecology?
CΓ©dric Villani and Michel Tsamados: Is AI the doom of ecology? YouTube video by FESTUM-PI

One of my highligths of 2025 was to listen to the conference by @cedricvillani.bsky.social and interview him this summer in Crete Hania as part of the #FestumPi series of conferences.

His talk entitled "Is AI the doom of ecology?" is a must watch www.youtube.com/watch?v=3pFT...

28.12.2025 15:40 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

#wearethierrybreton back off Donald

27.12.2025 17:24 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Line graph time series of daily Arctic temperatures north of 80Β°N latitude for every year from 1958 through 2025. There is a long-term warming trend for every day of the year and a clear seasonal cycle. 2025 is currently much warmer than average.

Line graph time series of daily Arctic temperatures north of 80Β°N latitude for every year from 1958 through 2025. There is a long-term warming trend for every day of the year and a clear seasonal cycle. 2025 is currently much warmer than average.

A few days before Christmas and near record high temperatures are occurring around the North Pole in the #Arctic πŸŽ…πŸ₯΅

Download at zacklabe.com/arctic-tempe...

20.12.2025 16:33 πŸ‘ 84 πŸ” 40 πŸ’¬ 3 πŸ“Œ 2
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⏳ Abstract submission countdown is already on!
-30 DAYS to go!
πŸ‘‡ Your next steps?
βœ”οΈYour Copernicus.org login details
βœ”οΈ An EGU membership (https://www.egu.eu/0ZFO4P/)
βœ”οΈ Your abstractπŸ₯³!
Submit here: https://www.egu26.eu/ or email egu26@copernicus.org for help.
πŸ“… Deadline: 15 January 2026, 13.00CET

15.12.2025 10:17 πŸ‘ 7 πŸ” 7 πŸ’¬ 1 πŸ“Œ 0

I would also argue that in France and Germany the green pressure undermined nuclear industry. Is that fair? Remind me why Nuclear is not a good solution in your opinion. I always felt that the French post second world nuclear path was a good one and never understood why France deviated from this?

12.12.2025 11:24 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Wave Bureau
Wave Bureau YouTube video by Fjodors Aleksejevs

"Wave bureau" A short movie for Ocean Physics and Climate Change #GEOL0022 by Fjodors Aleksejevs with amazing photography, music and humour reminding of me of the late David Lynch www.youtube.com/watch?v=5uTB...

This one deserves a price! @es-ucl.bsky.social @ucl.ac.uk

12.12.2025 10:36 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Gulf Stream - Keep Me Moving
Gulf Stream - Keep Me Moving YouTube video by Ceren Baylan

Another gem from my wonderful students in Ocean Physics and Climage Change #GEOL0022. This time it is by Ceren Baylan singing an ode to the Gulf Stream with her soothing guitar. Perfect way to start a relaxing week end www.youtube.com/watch?v=PRjS...

06.12.2025 11:13 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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"War is peace. Freedom is slavery. Ignorance is strength"

-- George Orwell (1949)

04.12.2025 14:42 πŸ‘ 501 πŸ” 149 πŸ’¬ 40 πŸ“Œ 12

Very nice to see this merged product available online and your beautiful visualisations

30.11.2025 22:34 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

And how many witches we’d be burning.

27.11.2025 16:25 πŸ‘ 225 πŸ” 37 πŸ’¬ 10 πŸ“Œ 2
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Our new article explores how @copernicusmarine.bsky.social uses data from EUMETSAT-operated Sentinel-3 satellites to support the ocean sector.

From algae monitoring to sea level & ice forecasts, @mercatorocean.bsky.social’s Pierre-Yves Le Traon explains why these services are vital: bit.ly/4pcwp64

27.11.2025 10:45 πŸ‘ 12 πŸ” 6 πŸ’¬ 0 πŸ“Œ 0
a, Geographic map of the Arctic Ocean with an enlarged view of the study region (black box). The schematic BG is marked by the yellow circle. The BG region is delimited by 130–180Β° W, 81Β° N and 300 m isobath (thick purple line), over which area averages (± standard errors) are computed, shown in b–d. The bathymetry from the International Bathymetric Chart of the Arctic Ocean v3 is coloured, with the isobaths of 40, 70, 150, 250, 500 m in grey, and 100 and 300 m highlighted in black. b, The annual mean BG DOT (m). c, The annual mean BG FWC (m) and volume (Γ—104 km3) estimated using the historical hydrographic data (FWC1, magenta) and using the DOT + GRACE data (FWC2, green). d, The annual mean BG thickness anomalies (m) relative to 2003 of the layer from the surface to the top of the cold halocline (yellow), the CHL beneath this (purple) and the sum of the two layers (orange). The standard error, shown by the bars, is the standard deviation divided by square root of the degrees of freedom, where the degrees of freedom for each year (ranging from 12 to 71) are computed using an integral timescale of three days for the hydrographic data and one month for the monthly satellite data. The dashed lines are the linear trends in the early and late periods, and the black lines in b and c denote the linear trends of DOT and FWC1 over the full study period, respectively. The trends were computed using the time series of annual mean variables.

a, Geographic map of the Arctic Ocean with an enlarged view of the study region (black box). The schematic BG is marked by the yellow circle. The BG region is delimited by 130–180Β° W, 81Β° N and 300 m isobath (thick purple line), over which area averages (± standard errors) are computed, shown in b–d. The bathymetry from the International Bathymetric Chart of the Arctic Ocean v3 is coloured, with the isobaths of 40, 70, 150, 250, 500 m in grey, and 100 and 300 m highlighted in black. b, The annual mean BG DOT (m). c, The annual mean BG FWC (m) and volume (Γ—104 km3) estimated using the historical hydrographic data (FWC1, magenta) and using the DOT + GRACE data (FWC2, green). d, The annual mean BG thickness anomalies (m) relative to 2003 of the layer from the surface to the top of the cold halocline (yellow), the CHL beneath this (purple) and the sum of the two layers (orange). The standard error, shown by the bars, is the standard deviation divided by square root of the degrees of freedom, where the degrees of freedom for each year (ranging from 12 to 71) are computed using an integral timescale of three days for the hydrographic data and one month for the monthly satellite data. The dashed lines are the linear trends in the early and late periods, and the black lines in b and c denote the linear trends of DOT and FWC1 over the full study period, respectively. The trends were computed using the time series of annual mean variables.

Our paper led by Peigen LIn on the related topic of Arctic Beaufort Gyre fresh water accumulation is available here www.nature.com/articles/s41...

20.11.2025 12:16 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Ekman & Geostrophic Motion. f.t. Beaufort Gyre (samirah khatun)
Ekman & Geostrophic Motion. f.t. Beaufort Gyre (samirah khatun) YouTube video by s

Amazing Ocean Physics and Climate Change #GEOL0022 presentation South Park style by Samirah Khatun...Very timely in view of risks of AMOC tipping if beaufort Gyre Arctic freshwater released to North Atlantic. Any resemblance to real persons is purely coincidental πŸ˜…

www.youtube.com/watch?v=P6qt...

20.11.2025 12:07 πŸ‘ 5 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Scary stuff showing that the UK is in the range of this AMOC tipping point induced large cooling area! @ucl.ac.uk and the UK is working on this topic with various projects already funded but also in the pipelines.

17.11.2025 07:57 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Is the Atlantic Ocean circulation close to tipping?
Is the Atlantic Ocean circulation close to tipping? YouTube video by Earth System Analysis - Potsdam Institute

Is the Atlantic Ocean circulation close to tipping?
Hear the latest science as I presented it last month at the ATLAS25 event in Helsinki.
Let me know if anything is unclear, or if you see good reasons why your government shouldn't immediately act on this. 🌊
youtu.be/ULJXqOZuY-8

16.11.2025 15:35 πŸ‘ 403 πŸ” 208 πŸ’¬ 15 πŸ“Œ 33

Scary indeed! Something to talk about with my ocean physics and climate change class ahead of our lecture on the Thermohaline Circulation 😱 #GEOL0022 @es-ucl.bsky.social

14.11.2025 13:06 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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The role of Arctic freshwater in shaping North Atlantic currents at University of Southampton on FindAPhD.com PhD Project - The role of Arctic freshwater in shaping North Atlantic currents at University of Southampton, listed on FindAPhD.com

3/3 The role of Arctic freshwater in shaping North Atlantic currents
Supervisors: Alessandro Silvano, Louis ClΓ©ment, Christine Gommenginger (Southampton), Michel Tsamados (UCL), Margaret Lindeman (Harvard)
Deadline: 8th January 2026
www.findaphd.com/phds/project...

14.11.2025 13:00 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
LinkedIn This link will take you to a page that’s not on LinkedIn

2/3 Forecasting the ecosystem and biogeochemical responses to sea ice change in the Southern Ocean
Supervisors: Lavenia Ratnarajah (UCL), Louisa Van Zeeland (Alan Turing Institute), Michel Tsamados (UCL)
Deadline: 14th January 2026
unrisk-cdt.ac.uk/projects/for...

14.11.2025 13:00 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
LinkedIn This link will take you to a page that’s not on LinkedIn

1/3 A lot of people are contacting me to do a PhD in polar remote sensing and modelling. Here are two advertised PhD studentship led by colleagues of mine that are super cool and in collaboration with me and UCL @es-ucl.bsky.social

14.11.2025 12:58 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Line graph time series of monthly mean surface temperature anomalies for the Antarctic region only. Every month is shown from 1940 to 2025. There is a long-term warming trend in all months of the year, but less obvious than the other regions.

Line graph time series of monthly mean surface temperature anomalies for the Antarctic region only. Every month is shown from 1940 to 2025. There is a long-term warming trend in all months of the year, but less obvious than the other regions.

Average temperature departures by month in the #Antarctic since the year 1940.

Data from @copernicusecmwf.bsky.social ERA5 reanalysis.

11.11.2025 23:57 πŸ‘ 103 πŸ” 43 πŸ’¬ 7 πŸ“Œ 5
A photo of the front cover of issue 1662 of Private Eye magazine with the caption "on shelves now." The front cover reads β€œBBC Under Attack: Pot and Kettle Special” and shows Broadcasting House with speech bubbles coming from the building. The quotes include β€œDonald Trump says we broadcast fake news!”, β€œNigel Farage says we’re totally biased!”, β€œBoris Johnson says we’re liars!”, β€œThe Daily Mail says we’re peddling conspiracy theories!”, β€œKemi Badenoch highlights poor leadership!”, β€œThe Daily Telegraph says we’re editing for political purposes!”, and β€œLiz Truss says we’ve done huge damage to the country!”

A photo of the front cover of issue 1662 of Private Eye magazine with the caption "on shelves now." The front cover reads β€œBBC Under Attack: Pot and Kettle Special” and shows Broadcasting House with speech bubbles coming from the building. The quotes include β€œDonald Trump says we broadcast fake news!”, β€œNigel Farage says we’re totally biased!”, β€œBoris Johnson says we’re liars!”, β€œThe Daily Mail says we’re peddling conspiracy theories!”, β€œKemi Badenoch highlights poor leadership!”, β€œThe Daily Telegraph says we’re editing for political purposes!”, and β€œLiz Truss says we’ve done huge damage to the country!”

BBC Under Attack: Pot and Kettle Special

The new Private Eye is out now.

12.11.2025 08:06 πŸ‘ 885 πŸ” 350 πŸ’¬ 21 πŸ“Œ 32

Problem is the big companies and media don't and they make it very clear to our politicians. Lets try and tilt the balance the way of the 99%

26.10.2025 09:03 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

One day, when this national nightmare is over and speaking up has no consequences, everyone will claim they were against this.

26.10.2025 08:34 πŸ‘ 643 πŸ” 157 πŸ’¬ 21 πŸ“Œ 10