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micheltsamados.bsky.social
@micheltsamados.bsky.social
300 followers 350 following 110 posts

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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Environmental science 35%
Geology 32%
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micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Dec 5
Check the short video of our project put together by the amazing #CINUK team and explaining the project here youtu.be/JKyvfs06T-4 @es-ucl.bsky.social
Sikuttiaq: Sea ice travel safety, Inuit Qaujimajatuqangit, sea ice monitoring | CINUK
YouTube video by British Antarctic Survey
youtu.be

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · 5d
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...
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 130–180° W, 81° 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 (×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.

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · 6d
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 😅

www.youtube.com/watch?v=P6qt...
Ekman & Geostrophic Motion. f.t. Beaufort Gyre (samirah khatun)
YouTube video by s
www.youtube.com

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · 9d
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.

Reposted by David Johnson, Fabián Muniesa, Michel Tsamados , and 2 more

rahmstorf.bsky.social
Prof. Stefan Rahmstorf @rahmstorf.bsky.social · 9d
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
Is the Atlantic Ocean circulation close to tipping?
YouTube video by Earth System Analysis - Potsdam Institute
youtu.be

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · 11d
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

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · 11d
3/3 The role of Arctic freshwater in shaping North Atlantic currents
Supervisors: Alessandro Silvano, Louis Clément, Christine Gommenginger (Southampton), Michel Tsamados (UCL), Margaret Lindeman (Harvard)
Deadline: 8th January 2026
www.findaphd.com/phds/project...
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
www.findaphd.com

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · 11d
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...
LinkedIn
This link will take you to a page that’s not on LinkedIn
lnkd.in

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · 11d
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
LinkedIn
This link will take you to a page that’s not on LinkedIn
lnkd.in

Reposted by James M. Bullock, Steve Peers, Anand Menon , and 2 more

privateeyenews.bsky.social
Private Eye Magazine @privateeyenews.bsky.social · 14d
BBC Under Attack: Pot and Kettle Special

The new Private Eye is out now.
A photo of the front cover of issue 1662 of Private Eye magazine with the caption "on shelves now." The front cover reads “BBC Under Attack: Pot and Kettle Special” and shows Broadcasting House with speech bubbles coming from the building. The quotes include “Donald Trump says we broadcast fake news!”, “Nigel Farage says we’re totally biased!”, “Boris Johnson says we’re liars!”, “The Daily Mail says we’re peddling conspiracy theories!”, “Kemi Badenoch highlights poor leadership!”, “The Daily Telegraph says we’re editing for political purposes!”, and “Liz Truss says we’ve done huge damage to the country!”

Reposted by Michel Tsamados

zacklabe.com
Zack Labe @zacklabe.com · 14d
Average temperature departures by month in the #Antarctic since the year 1940.

Data from @copernicusecmwf.bsky.social ERA5 reanalysis.
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.

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Oct 26
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%

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Oct 26
#GEOL0022 all you ever wanted to know about the key role of the Southern Ocean in our climate system summarized in a great 5 minutes video by one of my students www.youtube.com/watch?v=f_zZ... Great work Billy Liu 👍.

See credits at the end for inspiration from @jbsallee.bsky.social and others...
The Southern Ocean
YouTube video by Xin Liu
www.youtube.com

Reposted by Anna O. Law, Carl T. Bergstrom, Philip N. Cohen , and 6 more

chicagotribune.com
Chicago Tribune @chicagotribune.com · Oct 25
A Naperville man was hauled away by federal immigration agents Thursday morning as his two sons watched, the older boy begging them not to hurt his father and tearfully asking for a chance to speak to him before they left.
As his two sons watch and cry, ‘Pa, te amo,’ federal agents arrest man outside of Naperville apartments
A Naperville man was hauled away by federal immigration agents Thursday as his two sons cried and begged for him not to be hurt.
trib.al

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Oct 17
As part of my ocean physics and climate change module #GEOL0022 students put together quick summaries of my previous class. Here is one of these presentation that really stand out due to the creativity and acting talents of its author James Ge. Great job James!

www.youtube.com/watch?v=A2MQ...
The Ocean Heat Budget Video Presentation
YouTube video by Jamez
www.youtube.com

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Oct 12
A new year of teaching Ocean Physics and Climate Change @ucl.ac.uk @es-ucl.bsky.social and the students are already producing some gems as part of their flipped classroom assignments.

Radiative Forcing by Elizabeth Goodwin:
www.youtube.com/watch?v=u8bT...
Radiative Forcing Summary Presentation
YouTube video by Elizabeth Goodwin
www.youtube.com

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Oct 9
😂

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Oct 4
I wrote a post (with ChatGPT's help) on my stepdad's mathematical theories. Interested to hear your thoughts... www.linkedin.com/posts/michel...
Here’s a provocative take I’d love your reactions to 👇 What if the “laws of physics” aren’t out there in nature at all—but are programs our brains run, written by evolution to keep organisms… | Mich...
Here’s a provocative take I’d love your reactions to 👇 What if the “laws of physics” aren’t out there in nature at all—but are programs our brains run, written by evolution to keep organisms alive? ...
www.linkedin.com

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Oct 3
Conflict of interest disclaimer: JL Krivine happens to be my step-dad ❤️

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Oct 3
Very thought provoking talk from a famous maths professor Jean-Louis Krivine with a possible explanation of the paradoxes of physics, the Curry–Howard correspondence, the brain and much more...Physicist friends and colleagues buckle up! English subtitles available

www.youtube.com/watch?app=de...
P&M, Jean-Louis Krivine - La correspondance preuves-programmes : une découverte capitale et ignorée
YouTube video by Archive Trust for Research
www.youtube.com

Reposted by Doerthe Tetzlaff, Mattias Hallquist, Christoph Scherber , and 2 more

rahmstorf.bsky.social
Prof. Stefan Rahmstorf @rahmstorf.bsky.social · Aug 30
Wow. Check this out.
Politicians actually trying to solve problems can achieve a lot!
www.washingtonpost.com/climate-solu...
Paris said au revoir to cars. Air pollution maps reveal a dramatic change.
Air pollution fell substantially as the city restricted car traffic and made way for parks and bike lanes.
www.washingtonpost.com

Reposted by S. J. Holmes, Michel Tsamados

davidho.bsky.social
David Ho @davidho.bsky.social · Aug 29
Let me rewatch The Day After Tomorrow to see what to expect.
Collapse of critical Atlantic current is no longer low-likelihood, study finds
Scientists say ‘shocking’ discovery shows rapid cuts in carbon emissions are needed to avoid catastrophic fallout
www.theguardian.com

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Aug 26
Hi Alex you are onto something and couplings between ice-shelves and sea ice and ocean are important areas of research. I am afraid I can't tell you anything in more detail.

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Aug 26
To sum up, I wouldn't call this a good news story as the recent slow down of sea ice extent is only one part of a complex Arctic landscape (ice volume, ecology, temperature). I also don't think that we can draw any confident projections that the current slow down will persist in the coming years.

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Aug 26
7/n In my experience (e.g. Gregory et al. 2020) sea ice is too thick in climate models and there are also issues with the feedback processes in both summer and winter in the models.

tc.copernicus.org/articles/16/...
Network connectivity between the winter Arctic Oscillation and summer sea ice in CMIP6 models and observations
Abstract. The indirect effect of winter Arctic Oscillation (AO) events on the following summer Arctic sea ice extent suggests an inherent winter-to-summer mechanism for sea ice predictability. On the ...
tc.copernicus.org

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Aug 26
6/n Another aspect of the study that is lacking some discussion and would be very interesting to investigate more is the so called 'model response uncertainty'. In other words how much of the model trends are due to deficiencies and biases in the models iopscience.iop.org/article/10.1...
Figure 3. Fractional contribution of model structure, emissions scenario, and internal variability to total uncertainty for percent of remaining sea ice cover in July, August and September (JAS) for the Central Arctic, Siberian Marginal Seas (Kara Sea, Laptev Sea, East Siberian Sea), and North American Marginal Seas (Chukchi Sea, Beaufort Sea, Canadian Archipelago). The solid white lines indicate the borders between sources of uncertainty, while the transparent white shading around those lines is the range of this estimate based on different estimates of internal variability in the MMLEA. All panels are for five-year mean projections of percent of remaining Arctic sea-ice cover relative to 1995–2014.

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Aug 26
5/n The authors briefly address this by looking at a model results on sea ice thickness but don't dive deeper into how their results hold when looking at the total sea ice volume. Satellite data on sea ice thickness exist (e.g. Landy et al. 2022). www.nature.com/articles/s41...
A year-round satellite sea-ice thickness record from CryoSat-2 - Nature
Deep learning and numerical simulations of CryoSat-2 radar altimeter data are used to generate a pan-Arctic sea-ice thickness dataset for the Arctic melt period.
www.nature.com

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Aug 26
4/n I think the study is good and sound but might hide some more nuanced aspects of sea ice decline. Sea ice extent is a simplistic metric that encompasses a complex 3D field into a 2D projection. Other metrics, such as sea ice age for example, paint an even more alarming picture.

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Aug 26
3/n Similar pauses or hiatuses are natural in the climate system and were extensively scrutinised in the past in the context of global climate warming (see 1998-2013 period).

en.wikipedia.org/wiki/Global_...

micheltsamados.bsky.social
micheltsamados.bsky.social @micheltsamados.bsky.social · Aug 26
2/n By contrasting model results and satellite observations over the 2005-2024 period this study documents clearly a 'slowdown' or 'pause' in Arctic sea ice extent (the area where sea ice fraction is above 15%).