Nils Hählen
@nilshaehlen.bsky.social
Passionate about mountains and natural hazards, Head of Natural Hazards Division at the Office of Forests and Natural Hazards Canton Bern, Switzerland
Reposted by Nils Hählen
Was bedeuten Extremereignisse für die Schweiz – heute & morgen?
Unsere neue Web-App macht’s erlebbar!
Astrid hat sie am Treffpunkt Science City (ETH) vorgestellt – und besonders schön: Auch die Kinder waren begeistert dabei!
➡️ extremesapp.wsl.ch/de
Unsere neue Web-App macht’s erlebbar!
Astrid hat sie am Treffpunkt Science City (ETH) vorgestellt – und besonders schön: Auch die Kinder waren begeistert dabei!
➡️ extremesapp.wsl.ch/de
November 11, 2025 at 12:27 PM
Was bedeuten Extremereignisse für die Schweiz – heute & morgen?
Unsere neue Web-App macht’s erlebbar!
Astrid hat sie am Treffpunkt Science City (ETH) vorgestellt – und besonders schön: Auch die Kinder waren begeistert dabei!
➡️ extremesapp.wsl.ch/de
Unsere neue Web-App macht’s erlebbar!
Astrid hat sie am Treffpunkt Science City (ETH) vorgestellt – und besonders schön: Auch die Kinder waren begeistert dabei!
➡️ extremesapp.wsl.ch/de
Reposted by Nils Hählen
MeteoSwiss, ETH Zurich, and C2SM present the new Swiss climate scenarios.
These show how the Swiss climate will change if the global average temperature rises by 3 degrees. ethz.ch/en/news-and-...
@meteoschweiz.ch, @usyseth.bsky.social #klimaszenarien #meteoschweiz #ETH #C2SM #NCCS
These show how the Swiss climate will change if the global average temperature rises by 3 degrees. ethz.ch/en/news-and-...
@meteoschweiz.ch, @usyseth.bsky.social #klimaszenarien #meteoschweiz #ETH #C2SM #NCCS
Climate change particularly pronounced in Switzerland
Switzerland will become drier and hotter, experience less snow and face heavier rainfall in the future. Those are the conclusions reached by climate researchers from its Federal Office of Meteorology ...
ethz.ch
November 4, 2025 at 10:17 AM
MeteoSwiss, ETH Zurich, and C2SM present the new Swiss climate scenarios.
These show how the Swiss climate will change if the global average temperature rises by 3 degrees. ethz.ch/en/news-and-...
@meteoschweiz.ch, @usyseth.bsky.social #klimaszenarien #meteoschweiz #ETH #C2SM #NCCS
These show how the Swiss climate will change if the global average temperature rises by 3 degrees. ethz.ch/en/news-and-...
@meteoschweiz.ch, @usyseth.bsky.social #klimaszenarien #meteoschweiz #ETH #C2SM #NCCS
Reposted by Nils Hählen
🌍 When nature shows its force
Rockfalls, glacier collapses & debris flows are becoming more intense in a warming world. Join our VAW-glaciology group member Mylène Jacquemart at Treffpunkt Science City for her talk “Es rumort am Berg, Klimawandel und alpine Naturgefahren”
ethz.ch/de/news-und-...
Rockfalls, glacier collapses & debris flows are becoming more intense in a warming world. Join our VAW-glaciology group member Mylène Jacquemart at Treffpunkt Science City for her talk “Es rumort am Berg, Klimawandel und alpine Naturgefahren”
ethz.ch/de/news-und-...
November 3, 2025 at 1:40 PM
🌍 When nature shows its force
Rockfalls, glacier collapses & debris flows are becoming more intense in a warming world. Join our VAW-glaciology group member Mylène Jacquemart at Treffpunkt Science City for her talk “Es rumort am Berg, Klimawandel und alpine Naturgefahren”
ethz.ch/de/news-und-...
Rockfalls, glacier collapses & debris flows are becoming more intense in a warming world. Join our VAW-glaciology group member Mylène Jacquemart at Treffpunkt Science City for her talk “Es rumort am Berg, Klimawandel und alpine Naturgefahren”
ethz.ch/de/news-und-...
Reposted by Nils Hählen
#JobAlert in #Davos: For the #SLF Alpine Remote Sensing research group we are looking for a scientific assistant. If you are interested in working with #satellite data, check the following link for more information: apply.refline.ch/273855/1787/...
#CERC
#CERC
October 22, 2025 at 2:25 PM
#JobAlert in #Davos: For the #SLF Alpine Remote Sensing research group we are looking for a scientific assistant. If you are interested in working with #satellite data, check the following link for more information: apply.refline.ch/273855/1787/...
#CERC
#CERC
Reposted by Nils Hählen
In the red zone: New #SLF model reveals altitude-dependent #snow trends across the whole of Switzerland for the first time: average snow depths have been decreasing for decades.
More details: www.slf.ch/en/news/in-t...
📷 C. Marty, J. Götte / SLF
#climatechange
More details: www.slf.ch/en/news/in-t...
📷 C. Marty, J. Götte / SLF
#climatechange
October 20, 2025 at 1:05 PM
In the red zone: New #SLF model reveals altitude-dependent #snow trends across the whole of Switzerland for the first time: average snow depths have been decreasing for decades.
More details: www.slf.ch/en/news/in-t...
📷 C. Marty, J. Götte / SLF
#climatechange
More details: www.slf.ch/en/news/in-t...
📷 C. Marty, J. Götte / SLF
#climatechange
Reposted by Nils Hählen
Tour de CCAMM: noch bis 10. Oktober ist die Anmeldung möglich!
Infos und Anmeldung: www.slf.ch/de/veranstal...
Infos und Anmeldung: www.slf.ch/de/veranstal...
October 6, 2025 at 9:27 AM
Tour de CCAMM: noch bis 10. Oktober ist die Anmeldung möglich!
Infos und Anmeldung: www.slf.ch/de/veranstal...
Infos und Anmeldung: www.slf.ch/de/veranstal...
Reposted by Nils Hählen
The summer is over - and for about 16,600 people across 854 European cities that doesn't mean autumn comes, but death. People who would still be alive if it wasn't for our burning of fossil fuels. - New study with @lshtm.bsky.social www.imperial.ac.uk/grantham/pub...
September 17, 2025 at 10:09 AM
The summer is over - and for about 16,600 people across 854 European cities that doesn't mean autumn comes, but death. People who would still be alive if it wasn't for our burning of fossil fuels. - New study with @lshtm.bsky.social www.imperial.ac.uk/grantham/pub...
Reposted by Nils Hählen
Incredible ice loss measured again at #Konkordiaplatz on the #Aletsch #Glacier, home to the thickest ice in the #Alps (still about 800 m!). Yesterday’s survey revealed another –4.6 m of ice gone in just one year. :(
Measurements by @matthias-huss.bsky.social for GLAMOS
Measurements by @matthias-huss.bsky.social for GLAMOS
September 16, 2025 at 1:19 PM
Incredible ice loss measured again at #Konkordiaplatz on the #Aletsch #Glacier, home to the thickest ice in the #Alps (still about 800 m!). Yesterday’s survey revealed another –4.6 m of ice gone in just one year. :(
Measurements by @matthias-huss.bsky.social for GLAMOS
Measurements by @matthias-huss.bsky.social for GLAMOS
Reposted by Nils Hählen
Calling for EGU 2026 session proposals! If you have an idea for a geomorphology session, head to meetingorganizer.copernicus.org/EGU26/provis... and enter it in. Sessions on new topics and themes are extremely welcome! Help to build a great programme for EGU26!
Call for session proposals
meetingorganizer.copernicus.org
August 20, 2025 at 5:39 PM
Calling for EGU 2026 session proposals! If you have an idea for a geomorphology session, head to meetingorganizer.copernicus.org/EGU26/provis... and enter it in. Sessions on new topics and themes are extremely welcome! Help to build a great programme for EGU26!
Reposted by Nils Hählen
🤩New paper from our team member @cchartierrescan.bsky.social entitled 'Snow drought propagation and its impacts on streamflow drought in the Alps' published on Environmental Research Letters! Big congrats! Check out more details here: iopscience.iop.org/article/10.1...
#ClimateChange #Hydrology
#ClimateChange #Hydrology
August 27, 2025 at 3:16 PM
🤩New paper from our team member @cchartierrescan.bsky.social entitled 'Snow drought propagation and its impacts on streamflow drought in the Alps' published on Environmental Research Letters! Big congrats! Check out more details here: iopscience.iop.org/article/10.1...
#ClimateChange #Hydrology
#ClimateChange #Hydrology
Reposted by Nils Hählen
Getting used to this image: #glaciers almost completely naked - unprotected by the white snow - in August...
While July was good for glaciers after record-melt in June, the new heat wave again results in major ice loss
@vaw-glaciology.bsky.social
While July was good for glaciers after record-melt in June, the new heat wave again results in major ice loss
@vaw-glaciology.bsky.social
August 11, 2025 at 1:21 PM
Getting used to this image: #glaciers almost completely naked - unprotected by the white snow - in August...
While July was good for glaciers after record-melt in June, the new heat wave again results in major ice loss
@vaw-glaciology.bsky.social
While July was good for glaciers after record-melt in June, the new heat wave again results in major ice loss
@vaw-glaciology.bsky.social
Reposted by Nils Hählen
#Satellites reveal early signs of slope instability: #SLF scientist Andrea Manconi shows that #radar monitoring with satellites help to detect slope instabilities like at Blatten years in advance.
For details check the #ESA news article: eo4society.esa.int/2025/08/08/s...
@esa.int @esaearth.esa.int
For details check the #ESA news article: eo4society.esa.int/2025/08/08/s...
@esa.int @esaearth.esa.int
Satellite radars reveal early signs of slope instability years before Blatten rock/ice avalanche - eo science for society
On 28 May 2025, a massive rock/ice avalanche detached from the Birch Glacier above the village of Blatten in the Lötschental valley (Valais, Switzerland).
eo4society.esa.int
August 8, 2025 at 8:02 AM
#Satellites reveal early signs of slope instability: #SLF scientist Andrea Manconi shows that #radar monitoring with satellites help to detect slope instabilities like at Blatten years in advance.
For details check the #ESA news article: eo4society.esa.int/2025/08/08/s...
@esa.int @esaearth.esa.int
For details check the #ESA news article: eo4society.esa.int/2025/08/08/s...
@esa.int @esaearth.esa.int
Reposted by Nils Hählen
The Swiss Cryosphere Report 2024 is out: Despite heavy snow, Swiss glaciers lost >2% of their volume. Permafrost hit record levels as heatwaves & Saharan dust take a toll on snow & ice. 🧊📉 #Kryosphärenbericht2024 #GLAMOS @slfdavos.bsky.social #PERMOS @scnat.ch
🖇️ cryosphere.scnat.ch/de/publicati...
🖇️ cryosphere.scnat.ch/de/publicati...
July 11, 2025 at 8:40 AM
The Swiss Cryosphere Report 2024 is out: Despite heavy snow, Swiss glaciers lost >2% of their volume. Permafrost hit record levels as heatwaves & Saharan dust take a toll on snow & ice. 🧊📉 #Kryosphärenbericht2024 #GLAMOS @slfdavos.bsky.social #PERMOS @scnat.ch
🖇️ cryosphere.scnat.ch/de/publicati...
🖇️ cryosphere.scnat.ch/de/publicati...
Reposted by Nils Hählen
Hunting the extreme year 2022...
Yes, I'm really worried about the current state of Swiss #glaciers! After a dry winter, the scorching heat of the last weeks pushes glaciers towards another black year.
Hoping for some cooling but the summer has only just started
@vaw-glaciology.bsky.social
Yes, I'm really worried about the current state of Swiss #glaciers! After a dry winter, the scorching heat of the last weeks pushes glaciers towards another black year.
Hoping for some cooling but the summer has only just started
@vaw-glaciology.bsky.social
June 25, 2025 at 1:55 PM
Hunting the extreme year 2022...
Yes, I'm really worried about the current state of Swiss #glaciers! After a dry winter, the scorching heat of the last weeks pushes glaciers towards another black year.
Hoping for some cooling but the summer has only just started
@vaw-glaciology.bsky.social
Yes, I'm really worried about the current state of Swiss #glaciers! After a dry winter, the scorching heat of the last weeks pushes glaciers towards another black year.
Hoping for some cooling but the summer has only just started
@vaw-glaciology.bsky.social
Reposted by Nils Hählen
🌡️ Der #Permafrost in den Schweizer #Alpen war 2024 so warm wie noch nie – das zeigen die neuesten Daten des Beobachtungsnetzwerks #PERMOS. Diese Veränderungen werden sich auch in den kommenden Jahren und Jahrzehnten fortsetzen ➡️ scnat.ch/de/id/WbQd9
#Klima #Klimawandel
#Klima #Klimawandel
June 17, 2025 at 6:58 AM
🌡️ Der #Permafrost in den Schweizer #Alpen war 2024 so warm wie noch nie – das zeigen die neuesten Daten des Beobachtungsnetzwerks #PERMOS. Diese Veränderungen werden sich auch in den kommenden Jahren und Jahrzehnten fortsetzen ➡️ scnat.ch/de/id/WbQd9
#Klima #Klimawandel
#Klima #Klimawandel
Reposted by Nils Hählen
FAQ "Influence of #permafrost on #rockslopefailure": The permafrost in the Alps is warming rapidly and affecting major rock slope instabilities. Experts from the #SLF provide answers to the most important questions: www.slf.ch/en/permafros...
📷️ D. Hunziker
#CERC #naturalhazards
📷️ D. Hunziker
#CERC #naturalhazards
June 10, 2025 at 8:47 AM
FAQ "Influence of #permafrost on #rockslopefailure": The permafrost in the Alps is warming rapidly and affecting major rock slope instabilities. Experts from the #SLF provide answers to the most important questions: www.slf.ch/en/permafros...
📷️ D. Hunziker
#CERC #naturalhazards
📷️ D. Hunziker
#CERC #naturalhazards
Reposted by Nils Hählen
[1/2] We’ve released a new version of the factsheet on #Birchgletscher -- the Swiss glacier that catastrophically collapsed on 28 May 2025 following heavy debris loading from Kleines Nesthorn -- and some first field impressions that we were able to collect yesterday
🗂 polybox.ethz.ch/index.php/s/...
🗂 polybox.ethz.ch/index.php/s/...
June 2, 2025 at 10:50 AM
[1/2] We’ve released a new version of the factsheet on #Birchgletscher -- the Swiss glacier that catastrophically collapsed on 28 May 2025 following heavy debris loading from Kleines Nesthorn -- and some first field impressions that we were able to collect yesterday
🗂 polybox.ethz.ch/index.php/s/...
🗂 polybox.ethz.ch/index.php/s/...
Reposted by Nils Hählen
Nice annotated 3D model of the Birch Glacier collapse! 🏔️🧊🌊
sketchfab.com/3d-models/bl...
Source: Simeon Schmauß - created from @swisstopo Rapid Mapping oblique imagery
sketchfab.com/3d-models/bl...
Source: Simeon Schmauß - created from @swisstopo Rapid Mapping oblique imagery
June 1, 2025 at 12:38 PM
Nice annotated 3D model of the Birch Glacier collapse! 🏔️🧊🌊
sketchfab.com/3d-models/bl...
Source: Simeon Schmauß - created from @swisstopo Rapid Mapping oblique imagery
sketchfab.com/3d-models/bl...
Source: Simeon Schmauß - created from @swisstopo Rapid Mapping oblique imagery
Reposted by Nils Hählen
Wie genau kam es zum Gletscherabbruch, der zur bedauerlichen Verschüttung des Walliser Dorfes Blatten führte?
Dieser Frage sind ETH-Forschende nachgegangen:
ethz.ch/de/news-und-...
#Blatten #Gletscher #Bergsturz #Birchgletscher
Dieser Frage sind ETH-Forschende nachgegangen:
ethz.ch/de/news-und-...
#Blatten #Gletscher #Bergsturz #Birchgletscher
Was ETH-Gletscherforschende über den Abbruch des Birchgletschers wissen
Am Mittwoch ist der Birchgletscher unter der Last von Fels- und Schuttmassen eingebrochen, die von Felsstürzen am Kleinen Nesthorn stammten. In einem Faktenblatt erläutern ETH-Forschende die Hintergrü...
ethz.ch
May 30, 2025 at 7:18 AM
Wie genau kam es zum Gletscherabbruch, der zur bedauerlichen Verschüttung des Walliser Dorfes Blatten führte?
Dieser Frage sind ETH-Forschende nachgegangen:
ethz.ch/de/news-und-...
#Blatten #Gletscher #Bergsturz #Birchgletscher
Dieser Frage sind ETH-Forschende nachgegangen:
ethz.ch/de/news-und-...
#Blatten #Gletscher #Bergsturz #Birchgletscher
Reposted by Nils Hählen
Here is a factsheet on what is currently known about Birchgletscher, the Swiss glacier that catastrophically collapsed on 28 May 2025, following heavy debris loading from Kleines Nesthorn.
Our thoughts are with all those most deeply affected.
polybox.ethz.ch/index.php/s/...
Our thoughts are with all those most deeply affected.
polybox.ethz.ch/index.php/s/...
88028-VAW-2025-05_Birchgletscher_Factsheet_20250529_layouted.pdf
polybox - Use it as a logical memory stick, store your data on the ETH campus!
polybox.ethz.ch
May 29, 2025 at 10:28 AM
Here is a factsheet on what is currently known about Birchgletscher, the Swiss glacier that catastrophically collapsed on 28 May 2025, following heavy debris loading from Kleines Nesthorn.
Our thoughts are with all those most deeply affected.
polybox.ethz.ch/index.php/s/...
Our thoughts are with all those most deeply affected.
polybox.ethz.ch/index.php/s/...
Reposted by Nils Hählen
On 28 May 2025, the Birch Glacier in Switzerland catastrophically failed, generating a massive landslide that has partially buried Blatten. So what happens next?
eos.org/thelandslide...
eos.org/thelandslide...
May 29, 2025 at 6:02 AM
On 28 May 2025, the Birch Glacier in Switzerland catastrophically failed, generating a massive landslide that has partially buried Blatten. So what happens next?
eos.org/thelandslide...
eos.org/thelandslide...
Reposted by Nils Hählen
The major glacier collapse or rock-ice avalanche that was feared over the past few day occurred this afternoon in Lötschental, Switzerland. Our thoughts are with the local population and emergency responders as the we gain clarity on the dimensions of this event. #Lötschental #hazards #risk
May 28, 2025 at 4:01 PM
The major glacier collapse or rock-ice avalanche that was feared over the past few day occurred this afternoon in Lötschental, Switzerland. Our thoughts are with the local population and emergency responders as the we gain clarity on the dimensions of this event. #Lötschental #hazards #risk
Reposted by Nils Hählen
May 28, 2025 at 4:14 PM
Reposted by Nils Hählen
Reposted by Nils Hählen
In the dossier "Rockfalls, rockslides and more", our experts answer the most frequently asked questions about mountain hazards: www.slf.ch/en/natural-h...
📷️ R. Kenner
#SLF #SLFDavos #WSL #CERC #naturalhazards #rockfall #rockslide #debrisflow
📷️ R. Kenner
#SLF #SLFDavos #WSL #CERC #naturalhazards #rockfall #rockslide #debrisflow
May 20, 2025 at 6:29 AM
In the dossier "Rockfalls, rockslides and more", our experts answer the most frequently asked questions about mountain hazards: www.slf.ch/en/natural-h...
📷️ R. Kenner
#SLF #SLFDavos #WSL #CERC #naturalhazards #rockfall #rockslide #debrisflow
📷️ R. Kenner
#SLF #SLFDavos #WSL #CERC #naturalhazards #rockfall #rockslide #debrisflow