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
This is find -dot- gif
Towards the middle of the century, ~4000 glaciers worldwide will disappear every year.
Towards the middle of the century, ~4000 glaciers worldwide will disappear every year.
Peak glacier extinction in the mid-twenty-first century - Nature Climate Change
Many mountain glaciers will disappear with warming. Here the authors assess how many glaciers will disappear per year under different warming scenarios, finding that a peak in glacier loss will happen...
www.nature.com
December 29, 2025 at 2:56 AM
This is find -dot- gif
Towards the middle of the century, ~4000 glaciers worldwide will disappear every year.
Towards the middle of the century, ~4000 glaciers worldwide will disappear every year.
Reposted by Harry Zekollari
Unbelievable. This would be a terrible blow to American science, writ large. It would decimate not only climate research, but also the kind of weather, wildfire, and disaster research that has underpinned half a century of progress in prediction, early warning, and increased resilience.
Exclusive: The Trump administration is moving to dismantle the National Center for Atmospheric Research in Colorado, according to a senior White House official, taking aim at one of the world's leading climate research labs.
Trump moves to dismantle major US climate research center in Colorado
The Trump administration is breaking up the National Center for Atmospheric Research, taking aim at one of the world's leading climate research labs.
bit.ly
December 17, 2025 at 2:49 AM
Unbelievable. This would be a terrible blow to American science, writ large. It would decimate not only climate research, but also the kind of weather, wildfire, and disaster research that has underpinned half a century of progress in prediction, early warning, and increased resilience.
Reposted by Harry Zekollari
NCAR is quite literally our global mothership.
Everyone who works in climate and weather has passed through its doors and benefited from its incredible resources.
Dismantling NCAR is like taking a sledgehammer to the keystone holding up our scientific understanding of the planet.
Unbelievable.
Everyone who works in climate and weather has passed through its doors and benefited from its incredible resources.
Dismantling NCAR is like taking a sledgehammer to the keystone holding up our scientific understanding of the planet.
Unbelievable.
Trump moves to dismantle major US climate research center in Colorado
The Trump administration is breaking up the National Center for Atmospheric Research, taking aim at one of the world's leading climate research labs.
www.usatoday.com
December 17, 2025 at 2:59 AM
NCAR is quite literally our global mothership.
Everyone who works in climate and weather has passed through its doors and benefited from its incredible resources.
Dismantling NCAR is like taking a sledgehammer to the keystone holding up our scientific understanding of the planet.
Unbelievable.
Everyone who works in climate and weather has passed through its doors and benefited from its incredible resources.
Dismantling NCAR is like taking a sledgehammer to the keystone holding up our scientific understanding of the planet.
Unbelievable.
Reposted by Harry Zekollari
It's like on the eve of WWII we decided to stop funding R&D into weapons systems to develop advanced aircraft, ships, and tanks. Climate change is going to kick our butts if we lose NCAR (and NOAA) at a time when climate change is increasing extreme weather events capable of crashing the economy.
Exclusive: The Trump administration is moving to dismantle the National Center for Atmospheric Research in Colorado, according to a senior White House official, taking aim at one of the world's leading climate research labs.
Trump moves to dismantle major US climate research center in Colorado
The Trump administration is breaking up the National Center for Atmospheric Research, taking aim at one of the world's leading climate research labs.
bit.ly
December 17, 2025 at 4:24 AM
It's like on the eve of WWII we decided to stop funding R&D into weapons systems to develop advanced aircraft, ships, and tanks. Climate change is going to kick our butts if we lose NCAR (and NOAA) at a time when climate change is increasing extreme weather events capable of crashing the economy.
Reposted by Harry Zekollari
🚨 New paper ❄️
Our new study led by @landervt.bsky.social tracks the fate of ~200,000 #glaciers worldwide.
Even if warming is limited to +1.5°C, only 50% remain. With higher warming, losses accelerate, with up to ~4,000 glaciers disappearing per year.
📄 www.nature.com/articles/s41...
@nature.com
Our new study led by @landervt.bsky.social tracks the fate of ~200,000 #glaciers worldwide.
Even if warming is limited to +1.5°C, only 50% remain. With higher warming, losses accelerate, with up to ~4,000 glaciers disappearing per year.
📄 www.nature.com/articles/s41...
@nature.com
December 16, 2025 at 5:00 PM
🚨 New paper ❄️
Our new study led by @landervt.bsky.social tracks the fate of ~200,000 #glaciers worldwide.
Even if warming is limited to +1.5°C, only 50% remain. With higher warming, losses accelerate, with up to ~4,000 glaciers disappearing per year.
📄 www.nature.com/articles/s41...
@nature.com
Our new study led by @landervt.bsky.social tracks the fate of ~200,000 #glaciers worldwide.
Even if warming is limited to +1.5°C, only 50% remain. With higher warming, losses accelerate, with up to ~4,000 glaciers disappearing per year.
📄 www.nature.com/articles/s41...
@nature.com
Reposted by Harry Zekollari
"In regions dominated by small and rapidly responding glaciers, such as [...] the European Alps, over 50% of the glaciers are projected to disappear within the next two decades." New @natclimate.nature.com study by @landervt.bsky.social @harryzeko.bsky.social @hydr-vub.bsky.social
December 16, 2025 at 4:13 PM
"In regions dominated by small and rapidly responding glaciers, such as [...] the European Alps, over 50% of the glaciers are projected to disappear within the next two decades." New @natclimate.nature.com study by @landervt.bsky.social @harryzeko.bsky.social @hydr-vub.bsky.social
Reposted by Harry Zekollari
#Glacier #extinction rates will peak within decades, with thousands of glaciers disappearing each year by 2040s. Peak extinction rates in #Alps will be reached in the 2030s.
Urgent policy action can still prevent thousands of glaciers from being lost per year.
🧪❄️ www.nature.com/articles/s41...
Urgent policy action can still prevent thousands of glaciers from being lost per year.
🧪❄️ www.nature.com/articles/s41...
Peak glacier extinction in the mid-twenty-first century - Nature Climate Change
Many mountain glaciers will disappear with warming. Here the authors assess how many glaciers will disappear per year under different warming scenarios, finding that a peak in glacier loss will happen...
www.nature.com
December 16, 2025 at 10:43 AM
#Glacier #extinction rates will peak within decades, with thousands of glaciers disappearing each year by 2040s. Peak extinction rates in #Alps will be reached in the 2030s.
Urgent policy action can still prevent thousands of glaciers from being lost per year.
🧪❄️ www.nature.com/articles/s41...
Urgent policy action can still prevent thousands of glaciers from being lost per year.
🧪❄️ www.nature.com/articles/s41...
Reposted by Harry Zekollari
Research involving Vrije Universiteit Brussel reveals peak glacier extinction will hit mid-century. Up to 4,000 glaciers could vanish annually. That equals the entire European Alps population. Limiting warming to +1.5°C halves this loss. #ClimateChange #Glaciers
🔗 doi.org/10.1038/s415...
🔗 doi.org/10.1038/s415...
December 16, 2025 at 3:45 PM
Research involving Vrije Universiteit Brussel reveals peak glacier extinction will hit mid-century. Up to 4,000 glaciers could vanish annually. That equals the entire European Alps population. Limiting warming to +1.5°C halves this loss. #ClimateChange #Glaciers
🔗 doi.org/10.1038/s415...
🔗 doi.org/10.1038/s415...
Reposted by Harry Zekollari
Rising temperatures could to lead to the loss of thousands of glaciers per year, with up to ~4,000 vanishing annually under high emissions.
1.5°C could halve this loss 🧵
@landervt.bsky.social @harryzeko.bsky.social @matthias-huss.bsky.social @davidrounce.bsky.social @lilianschuster.bsky.social
1.5°C could halve this loss 🧵
@landervt.bsky.social @harryzeko.bsky.social @matthias-huss.bsky.social @davidrounce.bsky.social @lilianschuster.bsky.social
December 15, 2025 at 11:04 PM
Rising temperatures could to lead to the loss of thousands of glaciers per year, with up to ~4,000 vanishing annually under high emissions.
1.5°C could halve this loss 🧵
@landervt.bsky.social @harryzeko.bsky.social @matthias-huss.bsky.social @davidrounce.bsky.social @lilianschuster.bsky.social
1.5°C could halve this loss 🧵
@landervt.bsky.social @harryzeko.bsky.social @matthias-huss.bsky.social @davidrounce.bsky.social @lilianschuster.bsky.social
Reposted by Harry Zekollari
« Selon cette recherche, publiée aujourd’hui dans Nature Climate Change, le nombre de glaciers disparaissant atteindra un pic entre 2041 et 2055. Au cours de cette décennie, jusqu’à 4 000 #glaciers pourraient être perdus chaque année. » #climat
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Peak glacier extinction in the mid-twenty-first century - Nature Climate Change
Many mountain glaciers will disappear with warming. Here the authors assess how many glaciers will disappear per year under different warming scenarios, finding that a peak in glacier loss will happen...
www.nature.com
December 15, 2025 at 4:25 PM
« Selon cette recherche, publiée aujourd’hui dans Nature Climate Change, le nombre de glaciers disparaissant atteindra un pic entre 2041 et 2055. Au cours de cette décennie, jusqu’à 4 000 #glaciers pourraient être perdus chaque année. » #climat
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Harry Zekollari
🚨 New paper alert! ❄️
How many glaciers will exist by 2100 at +1.5 °C vs +4 °C warming? Our new study led by @landervt.bsky.social , projects the extinction year of ~200,000 glaciers worldwide. 🌍🧊
Can you imagine the Alps with only 20 glaciers remaining?
🔗 www.nature.com/articles/s41...
How many glaciers will exist by 2100 at +1.5 °C vs +4 °C warming? Our new study led by @landervt.bsky.social , projects the extinction year of ~200,000 glaciers worldwide. 🌍🧊
Can you imagine the Alps with only 20 glaciers remaining?
🔗 www.nature.com/articles/s41...
December 15, 2025 at 4:28 PM
🚨 New paper alert! ❄️
How many glaciers will exist by 2100 at +1.5 °C vs +4 °C warming? Our new study led by @landervt.bsky.social , projects the extinction year of ~200,000 glaciers worldwide. 🌍🧊
Can you imagine the Alps with only 20 glaciers remaining?
🔗 www.nature.com/articles/s41...
How many glaciers will exist by 2100 at +1.5 °C vs +4 °C warming? Our new study led by @landervt.bsky.social , projects the extinction year of ~200,000 glaciers worldwide. 🌍🧊
Can you imagine the Alps with only 20 glaciers remaining?
🔗 www.nature.com/articles/s41...
Reposted by Harry Zekollari
Il existe plus de 200 000 glaciers dans le monde aujourd’hui, mais combien en restera-t-il à la fin du siècle ? www.lefigaro.fr/sciences/rec...
Réchauffement climatique : l’«extinction» des glaciers atteindra un pic au milieu du siècle
Des chercheurs ont calculé pour la première fois combien de glaciers devraient subsister à travers le monde d’ici la fin du siècle.
www.lefigaro.fr
December 15, 2025 at 4:03 PM
Il existe plus de 200 000 glaciers dans le monde aujourd’hui, mais combien en restera-t-il à la fin du siècle ? www.lefigaro.fr/sciences/rec...
Reposted by Harry Zekollari
Many thanks to this week’s Glaciological Seminar speaker, Magali Ponds from the Vrije Universiteit Brussel!
Magali shared fascinating insights into how irrigation influences glacier mass balance in High Mountain Asia.
Check out our upcoming Glaciological Seminars here:
vaw.ethz.ch/en/events/gl...
Magali shared fascinating insights into how irrigation influences glacier mass balance in High Mountain Asia.
Check out our upcoming Glaciological Seminars here:
vaw.ethz.ch/en/events/gl...
December 12, 2025 at 7:48 AM
Many thanks to this week’s Glaciological Seminar speaker, Magali Ponds from the Vrije Universiteit Brussel!
Magali shared fascinating insights into how irrigation influences glacier mass balance in High Mountain Asia.
Check out our upcoming Glaciological Seminars here:
vaw.ethz.ch/en/events/gl...
Magali shared fascinating insights into how irrigation influences glacier mass balance in High Mountain Asia.
Check out our upcoming Glaciological Seminars here:
vaw.ethz.ch/en/events/gl...
Reposted by Harry Zekollari
🌍Two members of our department @cjsmith.be and @harryzeko.bsky.social joined the first IPCC AR7 lead author meeting in Saint-Denis (Paris).
#IPCC #AR7 #ClimateScience #WG1 #ClimateAction
#IPCC #AR7 #ClimateScience #WG1 #ClimateAction
December 8, 2025 at 2:07 PM
🌍Two members of our department @cjsmith.be and @harryzeko.bsky.social joined the first IPCC AR7 lead author meeting in Saint-Denis (Paris).
#IPCC #AR7 #ClimateScience #WG1 #ClimateAction
#IPCC #AR7 #ClimateScience #WG1 #ClimateAction
Reminder for our PhD position on finding old ice in Antarctica - deadline this Friday!
❄️ 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? 🙂
December 8, 2025 at 9:33 AM
Reminder for our PhD position on finding old ice in Antarctica - deadline this Friday!
Reposted by Harry Zekollari
📣 PRESS RELEASE
#IPCC authors meet in Paris 🇫🇷 to begin drafting the Seventh Assessment Report
More than six hundred experts appointed to the three Working Groups of the IPCC are gathering in Paris this week to draft IPCC’s Seventh Assessment Report.
🔗 bit.ly/4ir09cC
#IPCC authors meet in Paris 🇫🇷 to begin drafting the Seventh Assessment Report
More than six hundred experts appointed to the three Working Groups of the IPCC are gathering in Paris this week to draft IPCC’s Seventh Assessment Report.
🔗 bit.ly/4ir09cC
December 1, 2025 at 9:46 AM
📣 PRESS RELEASE
#IPCC authors meet in Paris 🇫🇷 to begin drafting the Seventh Assessment Report
More than six hundred experts appointed to the three Working Groups of the IPCC are gathering in Paris this week to draft IPCC’s Seventh Assessment Report.
🔗 bit.ly/4ir09cC
#IPCC authors meet in Paris 🇫🇷 to begin drafting the Seventh Assessment Report
More than six hundred experts appointed to the three Working Groups of the IPCC are gathering in Paris this week to draft IPCC’s Seventh Assessment Report.
🔗 bit.ly/4ir09cC
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...