Harry Zekollari
@harryzeko.bsky.social
Glaciologist - Associate professor at @vubrussel.bsky.social
Interested in glaciers, climate, hydrology, meteorites,...
Previously at ETH Zurich, WSL Birmensdorf, TU Delft, and Université libre de Bruxelles.
Interested in glaciers, climate, hydrology, meteorites,...
Previously at ETH Zurich, WSL Birmensdorf, TU Delft, and Université libre de Bruxelles.
Pinned
⛰️ In a new study in @science.org, we project that 39% of the global glacier mass is committed to be lost irrespective of future warming.
However, a lot can still be saved - see title:
“Glacier preservation doubled by limiting warming to 1.5°C versus 2.7°C”
www.science.org/doi/10.1126/...
[1/n]
However, a lot can still be saved - see title:
“Glacier preservation doubled by limiting warming to 1.5°C versus 2.7°C”
www.science.org/doi/10.1126/...
[1/n]
Reposted by Harry Zekollari
As glaciers shrink in size, they will no longer be able to generate katabatic winds, and their rate of warming will begin to reflect ambient temperatures.
eos.org/articles/gla...
eos.org/articles/gla...
Glaciers Are Warming More Slowly Than Expected, but Not for Long - Eos
An unprecedented dataset offers insight into the counterintuitive cooling effect of glaciers on a global scale.
eos.org
November 20, 2025 at 4:28 PM
As glaciers shrink in size, they will no longer be able to generate katabatic winds, and their rate of warming will begin to reflect ambient temperatures.
eos.org/articles/gla...
eos.org/articles/gla...
Do you want to help us find some of the oldest ice on our planet?
The consider applying for this fully-funded PhD position to join us at the
@vubrussel.bsky.social / @ulbruxelles.bsky.social
Thanks for reposting / helping us to spread the word!
The consider applying for this fully-funded PhD position to join us at the
@vubrussel.bsky.social / @ulbruxelles.bsky.social
Thanks for reposting / helping us to spread the word!
❄️ We’re hiring!
The #bglacier group is looking for a motivated #PhD to join the #BECOOLproject and search for ancient ice near Princess Elisabeth Station in #Antarctica.
📋 Mix of modelling, remote sensing & fieldwork.
🗓️ Apply by 12 Dec: hydr.vub.be/media/attach...
Will you join us? 🙂
The #bglacier group is looking for a motivated #PhD to join the #BECOOLproject and search for ancient ice near Princess Elisabeth Station in #Antarctica.
📋 Mix of modelling, remote sensing & fieldwork.
🗓️ Apply by 12 Dec: hydr.vub.be/media/attach...
Will you join us? 🙂
November 18, 2025 at 3:39 PM
Do you want to help us find some of the oldest ice on our planet?
The consider applying for this fully-funded PhD position to join us at the
@vubrussel.bsky.social / @ulbruxelles.bsky.social
Thanks for reposting / helping us to spread the word!
The consider applying for this fully-funded PhD position to join us at the
@vubrussel.bsky.social / @ulbruxelles.bsky.social
Thanks for reposting / helping us to spread the word!
Reposted by Harry Zekollari
🚨 New study alert! Our research reveals contrasting water futures for Western Patagonia under climate change. Some areas could face severe shortages, while others may see increased flows. 🏔️💧 #ClimateChange #Patagonia #Glaciers
dx.doi.org/10.1029/2025...
dx.doi.org/10.1029/2025...
Hybrid Glacio‐Hydrological Modeling Reveals Contrasting Runoff Changes in Western Patagonia Over the 21st Century
Hybrid glacio-hydrological models outperformed traditional approaches in predicting streamflow in ungauged basins and areas The regional freshwater flux was 19,815 m3 s−1 (2000–2019), with glacie...
dx.doi.org
November 13, 2025 at 1:19 PM
🚨 New study alert! Our research reveals contrasting water futures for Western Patagonia under climate change. Some areas could face severe shortages, while others may see increased flows. 🏔️💧 #ClimateChange #Patagonia #Glaciers
dx.doi.org/10.1029/2025...
dx.doi.org/10.1029/2025...
Reposted by Harry Zekollari
Many congratulations to the amazing @frediotto.bsky.social for receiving the Hans Oeschger Medal! This career award from the @egu.eu Climate Division underlines the ground-breaking research Fredi did on many fronts, most notably on near-realtime extreme event attribution @wwattribution.bsky.social
I've got a medal! And not just any, but the Hans Oeschger Medal from the EGU, for outstanding contributions to research on climatic changes. www.egu.eu/news/1551/eg...
November 13, 2025 at 8:07 AM
Many congratulations to the amazing @frediotto.bsky.social for receiving the Hans Oeschger Medal! This career award from the @egu.eu Climate Division underlines the ground-breaking research Fredi did on many fronts, most notably on near-realtime extreme event attribution @wwattribution.bsky.social
Reposted by Harry Zekollari
🚨 New paper alert!
Research by postdoc Maaike Izeboud from the bglacier group in Nature Climate Change 🎉
Using 20 years of satellite data, she mapped Antarctic ice shelf fractures and showed how damage rises under high emissions but stabilises in low-emission futures
www.nature.com/articles/s41...
Research by postdoc Maaike Izeboud from the bglacier group in Nature Climate Change 🎉
Using 20 years of satellite data, she mapped Antarctic ice shelf fractures and showed how damage rises under high emissions but stabilises in low-emission futures
www.nature.com/articles/s41...
Damage development on Antarctic ice shelves sensitive to climate warming - Nature Climate Change
Damages such as crevasses or cracks can be early indicators of ice shelf weakening. Here, the authors quantify changes in damage structures in Antarctic ice sheets, which show sensitivity to warming
www.nature.com
October 17, 2025 at 1:27 PM
🚨 New paper alert!
Research by postdoc Maaike Izeboud from the bglacier group in Nature Climate Change 🎉
Using 20 years of satellite data, she mapped Antarctic ice shelf fractures and showed how damage rises under high emissions but stabilises in low-emission futures
www.nature.com/articles/s41...
Research by postdoc Maaike Izeboud from the bglacier group in Nature Climate Change 🎉
Using 20 years of satellite data, she mapped Antarctic ice shelf fractures and showed how damage rises under high emissions but stabilises in low-emission futures
www.nature.com/articles/s41...
Reposted by Harry Zekollari
24 years of satellite data reveal a dynamic, cyclic pattern of ice shelf damage across Antarctica.
Damage, linked to flow acceleration, strain, and thinning, shows strong sensitivity to climate warming, suggesting current models may underestimate future retreat.
www.nature.com/articles/s41...
Damage, linked to flow acceleration, strain, and thinning, shows strong sensitivity to climate warming, suggesting current models may underestimate future retreat.
www.nature.com/articles/s41...
Damage development on Antarctic ice shelves sensitive to climate warming - Nature Climate Change
Damages such as crevasses or cracks can be early indicators of ice shelf weakening. Here, the authors quantify changes in damage structures in Antarctic ice sheets, which show sensitivity to warming
www.nature.com
October 19, 2025 at 4:13 AM
24 years of satellite data reveal a dynamic, cyclic pattern of ice shelf damage across Antarctica.
Damage, linked to flow acceleration, strain, and thinning, shows strong sensitivity to climate warming, suggesting current models may underestimate future retreat.
www.nature.com/articles/s41...
Damage, linked to flow acceleration, strain, and thinning, shows strong sensitivity to climate warming, suggesting current models may underestimate future retreat.
www.nature.com/articles/s41...
Reposted by Harry Zekollari
Op deze dag waarop belgische universiteiten protesteren tegen de kille besparingen op hoger onderwijs en wetenschappelijk onderzoek, komt deze boodschap van het Nobelprijscommité duidelijk binnen.
Joel Mokyr, Philippe Aghion and Pewter Howitt share economics prize for work that underlines the importance of investing in research and development.
go.nature.com/4hj9NNV
go.nature.com/4hj9NNV
Economics Nobel prize won by researchers who showed how science boosts growth
Joel Mokyr, Philippe Aghion and Pewter Howitt share economics prize for work that underlines the importance of investing in research and development.
go.nature.com
October 14, 2025 at 6:54 AM
Op deze dag waarop belgische universiteiten protesteren tegen de kille besparingen op hoger onderwijs en wetenschappelijk onderzoek, komt deze boodschap van het Nobelprijscommité duidelijk binnen.
Reposted by Harry Zekollari
Please join USAA-IPCC and @agu.org next week for a webinar on how to engage with @ipcc.bsky.social reports as an Expert Reviewer! The Special Report on Cities and Climate Change opens for first review on Oct 17 - we'll discuss in our webinar how to register and what makes for good review comments.
October 6, 2025 at 7:58 PM
Please join USAA-IPCC and @agu.org next week for a webinar on how to engage with @ipcc.bsky.social reports as an Expert Reviewer! The Special Report on Cities and Climate Change opens for first review on Oct 17 - we'll discuss in our webinar how to register and what makes for good review comments.
Reposted by Harry Zekollari
Excited to advertise a new interdisciplinary PhD opportunity at @geogdurham.bsky.social - "From ice to ecosystem: assessing the risk of glacier melt and legacy contamination for reindeer in Sápmi (Lapland)" ❄️ 🦌
To learn more about the project and how to apply visit: iapetus.ac.uk/studentships...
To learn more about the project and how to apply visit: iapetus.ac.uk/studentships...
October 13, 2025 at 8:51 AM
Excited to advertise a new interdisciplinary PhD opportunity at @geogdurham.bsky.social - "From ice to ecosystem: assessing the risk of glacier melt and legacy contamination for reindeer in Sápmi (Lapland)" ❄️ 🦌
To learn more about the project and how to apply visit: iapetus.ac.uk/studentships...
To learn more about the project and how to apply visit: iapetus.ac.uk/studentships...
Reposted by Harry Zekollari
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)
October 10, 2025 at 10:28 AM
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)
Reposted by Harry Zekollari
Exploring the hidden world beneath the #PersGlacier. Scanning the ice cave in 3D with a LiDAR system to reveal its shapes and layers.
October 10, 2025 at 6:49 AM
Exploring the hidden world beneath the #PersGlacier. Scanning the ice cave in 3D with a LiDAR system to reveal its shapes and layers.
Reposted by Harry Zekollari
📣 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...
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...
October 7, 2025 at 6:07 PM
📣 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...
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...
Reposted by Harry Zekollari
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.
📸👇
Tijdens veldwerk op de #Morteratsch en #Pers gletsjer ontdekten we meerdere ijsgrotten: natuurlijke tunnels gevormd door smeltwater dat het ijs van binnenuit uitholt.
📸👇
October 6, 2025 at 6:46 AM
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.
📸👇
Tijdens veldwerk op de #Morteratsch en #Pers gletsjer ontdekten we meerdere ijsgrotten: natuurlijke tunnels gevormd door smeltwater dat het ijs van binnenuit uitholt.
📸👇
Reposted by Harry Zekollari
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🔥🧊.
October 1, 2025 at 1:37 PM
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🔥🧊.
Reposted by Harry Zekollari
[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
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
September 30, 2025 at 9:39 AM
[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
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
Reposted by Harry Zekollari
Lopende projectoproep voor interuniversitair wetenschappelijke onderzoek in Vlaanderen wordt geannuleerd als gevolg van besparingen Vlaamse regering.
September 29, 2025 at 6:50 AM
Lopende projectoproep voor interuniversitair wetenschappelijke onderzoek in Vlaanderen wordt geannuleerd als gevolg van besparingen Vlaamse regering.
Reposted by Harry Zekollari
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
@vubrussel.bsky.social #GLAMOS
September 25, 2025 at 4:44 PM
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
@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
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
September 22, 2025 at 3:15 PM
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
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
Reposted by Harry Zekollari
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/
I had an engagement with blogger, failed California gubernatorial candidate, and self-identified reporter Michael Shellenberger this past week, which started out being about this new paper being heralded by climate skeptics as disproving global sea-level acceleration. (LONG 🧵)
September 9, 2025 at 2:13 AM
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/
Reposted by Harry Zekollari
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
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
September 6, 2025 at 2:37 PM
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
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
Reposted by Harry Zekollari
🎉 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/
The Overshoot Conference Podcast | Overshoot
overshootconference.org
September 3, 2025 at 8:15 AM
🎉 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/
Reposted by Harry Zekollari
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
#MachineLearning #Climate @kingscollegelondon.bsky.social
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.
www.jobs.ac.uk
August 29, 2025 at 9:15 AM
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
#MachineLearning #Climate @kingscollegelondon.bsky.social
Reposted by Harry Zekollari
The Cryosphere in IPCC AR7 - some thoughts and observations of mine here: www.antarcticglaciers.org/2025/08/the-...
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...
www.antarcticglaciers.org
August 24, 2025 at 3:40 PM
The Cryosphere in IPCC AR7 - some thoughts and observations of mine here: www.antarcticglaciers.org/2025/08/the-...
Reposted by Harry Zekollari
📢 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/...
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/...
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...
agupubs.onlinelibrary.wiley.com
August 21, 2025 at 7:09 AM
📢 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/...
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/...
Reposted by Harry Zekollari
🚨 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.
August 17, 2025 at 11:30 AM
🚨 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.