Harry Zekollari

@lilianschuster.bsky.social @rodaguayo.bsky.social

It was an honour to host this year's #OGGM workshop at @vubrussel.bsky.social . 3 days of #glacier modelling and so much more! Next year (10th year celebration!) the OGGM workshop will take place in #Obergurgl (24-28 AUG 2026)

Exploring the hidden world beneath the #PersGlacier. Scanning the ice cave in 3D with a LiDAR system to reveal its shapes and layers.

📣 Attention: Early-career researchers from developing countries & countries in transition!

Are you interested in becoming a Chapter Scientist and supporting author teams for #IPCC’s Seventh Assessment Report?

Apply by 18 Oct 2025

🔗 www.ipcc.ch/2025/10/07/c...

IJsgrotten: de plek om gletsjers van binnenuit te bestuderen, maar ook een teken van een stervende gletsjer. ❄️

Tijdens veldwerk op de #Morteratsch en #Pers gletsjer ontdekten we meerdere ijsgrotten: natuurlijke tunnels gevormd door smeltwater dat het ijs van binnenuit uitholt.

📸👇

Very happy to start my FWO-funded postdoctoral fellowship today, working with @harryzeko.bsky.social , Jordi Bolibar, and @marit-vantiel.bsky.social. Our project will explore how glaciers buffer streamflow droughts worldwide 🌊🌍 and how this role may change under what-if scenarios🔥🧊.

[1/2] Sometimes pictures say more than 1,000 words.
This repeat photography of Birchgletscher (1927–2025) shows a century of change, ending in this year’s tragic collapse that destroyed Blatten and claimed one life.

📷 1927 vs 2025

Lopende projectoproep voor interuniversitair wetenschappelijke onderzoek in Vlaanderen wordt geannuleerd als gevolg van besparingen Vlaamse regering.

Excited to be back on the #Morteratsch #glacier complex for our annual fieldwork. Together with colleagues from the Geography department, the coming week we will measure how the glacier is changing. Stay tuned for some updates!
@vubrussel.bsky.social #GLAMOS

Over the last decade, glaciers in the European Alps have lost more than 15% of their area.

New study by Codruț-Andrei Diaconu, introducing automated tool to map and quantify glacier area changes (+uncertainties)!

agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Together with @jlbamber.bsky.social

Update on this thread: Thanks to the feedback on this thread, I realized the methodological problems with the Voortman and De Vos (2025) paper (which the New York Post heralded as "Rising-sea hysteria debunked") went deeper than I originally realized, and clearly necessitate retraction. 1/

New starter pack with @ipcc.bsky.social #AR7 scientists (bureau, authors, REs)! Full list: apps.ipcc.ch/report/autho...
For SR cities scientists see separate starter pack!
@dianaurge.bsky.social @sherilee.bsky.social @siir-kilkis.bsky.social @janfuglestvedt.bsky.social
go.bsky.app/2FuXb3Y

🎉 Thrilled to announce Episode 1 of the Overshoot Conference Podcast is now live! This marks the start of our 9-episode series exploring the challenges of climate overshoot ahead of the Overshoot Conference Sep 30-Oct 02. overshootconference.org/the-overshoo... (or wherever you get your podcasts) 1/

Postdoctoral Research Associate at King's College London Explore an exciting academic career as a Postdoctoral Research Associate. Don't miss out on other academic jobs. Click to apply and explore more opportunities.

Looking for a job in AI/ML? Interested in climate change? 1 year interdisciplinary research role at King's College London using ML to quantify uncertainties in future sea level rise: www.jobs.ac.uk/job/DOL498/p... Please share - thanks

#MachineLearning #Climate @kingscollegelondon.bsky.social

The Cryosphere in the IPCC AR7 Working Group I - AntarcticGlaciers.org The IPCC Assessment Report 6 (AR6) Working Group I (WGI) had a strong focus on the Cryosphere, polar regions and glaciology. Chapter 9, “Ocean, Cryosphere and Sea Level Change” ensured a detailed anal...

The Cryosphere in IPCC AR7 - some thoughts and observations of mine here: www.antarcticglaciers.org/2025/08/the-...

Modeling the Impact of Mining Activities on the Dynamics and Evolution of a Kyrgyz Glacier The Davydov Glacier has been reduced by 160 million m3 and shortened by 2 km due to ice excavation for the Kumtor Gold Mine operations Davydov Glacier may briefly advance if mining stops, but cli...

📢 𝗡𝗲𝘄 𝗣𝗮𝗽𝗲𝗿! ❄️🇰🇬
We modeled the #𝗗𝗮𝘃𝘆𝗱𝗼𝘃 𝗚𝗹𝗮𝗰𝗶𝗲𝗿 (1850–2100) in #Kyrgyzstan.
Not just another glacier (>200,000 exist worldwide) — this one is special.
👉 Why? Stay tuned.
👉 Full paper: agupubs.onlinelibrary.wiley.com/doi/10.1029/...

🚨 Update from #Kyrgyzstan. Our mass balance model shows record glacier mass loss this year (and the melt season isn’t over yet). Causes: little snow 🌨️, high temperatures 🌡️, hardly any summer snowfall ❄️. Our fieldwork confirmed: even at the summit of some glaciers (#Grigoriev), no snow remained.

La fonte des glaciers impactera jusqu’à la Belgique Bonne nouvelle : on peut encore sauver une grande partie des glaciers. Si le réchauffement climatique est limité à 1,5 °C par rapport aux valeurs préindustrielles, comme le prévoit l’accord de Paris, il est possible de préserver plus de la moitié de la masse des glaciers dans le monde. En revanche, si l’on reste sur la trajectoire empruntée par les politiques climatiques actuelles et menant à environ 2,7 °C de réchauffement, seul un peu plus d’un quart subsistera. C’est l’une des conclusions d’une très vaste étude, menée par une équipe internationale de 25 chercheurs s’appuyant sur l’utilisation de pas moins de huit modèles différents. Ce qui rend cette étude particulièrement remarquable, c’est qu’elle s’intéresse à l’évolution des glaciers sur le long terme.

La fonte des glaciers impactera jusqu’à la Belgique

Bonne nouvelle : on peut encore sauver une grande partie des glaciers. Si le réchauffement climatique est limité à 1,5 °C par rapport aux valeurs préindustrielles, comme le prévoit l’accord de Paris, il est possible de préserver plus de la moitié…

„Een paar jaar geleden zou ik nog van mijn stoel zijn gevallen bij het zien van deze resultaten. Maar inmiddels liggen deze cijfers helaas in de lijn der verwachtingen." @harryzeko.bsky.social

@gemmatetlow.bsky.social @nrcwetenschap.bsky.social #glaciologie
www.nrc.nl/nieuws/2025/...

Tune in this morning for the opening of the June UN Climate Meetings #SB62 in Bonn 🇺🇳

The meetings drive forward progress on key issues and prepare decisions for adoption at COP30 in November.

UNFCCC Executive Secretary Simon Stiell will be giving an opening speech: youtube.com/live/N2co8huVN

In gesprek met topklimaatwetenschapper Joeri Rogelj | 6 juni 2025 Mis de keynote van Joeri Rogelj niet, die is aangevuld met sprekers uit domeinen zoals klimaatwetenschap, beleid, scenario's en rechtszaken.

Van harte welkom op het symposium "In gesprek met topklimaatwetenschapper Joeri Rogelj" nu vrijdag 9-12h @vubrussel.bsky.social, met keynote van @joerirogelj.bsky.social en korte lezingen van @cjsmith.be, @cohelongo.bsky.social, @harryzeko.bsky.social & mezelf. receptie. www.vub.be/nl/evenement...

Tourists hike to visit the Nigardsbreen glacier in Jostedal, Norway, in August 2022. | Bram Janssen/AP/File photo

The world’s glaciers are in dire health with almost 40% of their total mass already doomed, even if global temperatures stopped rising immediately, a new study has found: cnn.it/4kP9Cus

Irreversible glacier change and trough water for centuries after overshooting 1.5 °C - Nature Climate Change How mountain glaciers will react to temporarily overshooting 1.5 °C of warming is poorly understood. Here the authors show irreversible global glacier loss for centuries after overshoot, implying long...

🏔️🌍🌎🌏 New study warns: Even if we only temporarily exceed 1.5 °C, mountain glaciers face irreversible losses lasting centuries. Such an overshoot reduces glacier runoff, specifically in regions where some glaciers regrow.

Further interested? Check out our new publication: doi.org/10.1038/s415...

If we limit global warming to +1.5°C, more than half of non-polar glaciers can be saved.

This is the finding of an international collaborative study that calculated the potential ice loss of more than 200,000 glaciers: ethz.ch/en/news-and-...

Nearly 40% of the world’s glaciers are already doomed, scientists say | CNN The world’s glaciers are in dire health with almost 40% of their total mass already doomed even if global temperatures stopped rising immediately, a new study has found.

edition.cnn.com/2025/06/02/c...

[15/n]

Almost 40% of glaciers are already doomed to melt, says a new Science study led by Belgian & European researchers. Limiting warming to 1.5°C could save half the ice. Every fraction of a degree counts: doi.org/10.1126/scie...

The importance of just one degree on glacier preservation - by holding temperature increase to +1.5°C, more than twice as much glacier mass remains compared with an increase of 2.7°C. “Our findings stress the need for stringent mitigation policies to ensure the long-term preservation of glaciers”.

📣 A new study by Harry Zekollari and others estimates that glaciers around the world will lose ~40% of their mass relative to 2020 even if we managed to keep warming at present-day levels (1.2°C above preindustrial). This committed loss would add 113mm to sea level. www.science.org/doi/10.1126/...

Every +0.1°C of global warming leads to ~2% more glacier ice loss. Sticking to the #ParisAgreement (+1.5°C) would preserve over half the ice compared to current policies (+2.7°C). This is the result of a new study based, led by Harry Zekollari, Lilian Schuster & several co-authors from our group.

Glacier preservation doubled by limiting warming to 1.5°C versus 2.7°C Glaciers adapt slowly to changing climatic conditions, with long-term implications for sea-level rise and water supply. Using eight glacier models, we simulated global glacier evolution over multicent...

Landmark study shows that our current emissions pathway will destroy over 75% of glacier ice globally, but ambitious mitigation (1.5°C) can still save twice as much

www.science.org/doi/10.1126/...