Melaine Le Roy
@subfossilguy.bsky.social
Assiduous dendroglaciologist, moraine lover, wandering geomorphologist, living in the Holocene, climate (and eco-) anxious, @edytem.bsky.social
https://www.researchgate.net/profile/Melaine-Le-Roy-2?ev=hdr_xprf
https://www.researchgate.net/profile/Melaine-Le-Roy-2?ev=hdr_xprf
Pinned
Melaine Le Roy
@subfossilguy.bsky.social
· Oct 21
Aletsch Glacier forefield is so gigantic that fieldwork is demanding there!
Today was maybe one of the hardest working day ever...
Took me 3h40 to get back to Belalp with 40kg (rope, chainsaw, wood)... 😫
Today was maybe one of the hardest working day ever...
Took me 3h40 to get back to Belalp with 40kg (rope, chainsaw, wood)... 😫
Highway with a view! 😲❄️🌊
Huge aerosol shot yesterday below Corno Grande north face, 2912 m asl (Gran Sasso massif, Apennines, IT) just before the entrance to the 10 km tunnel that passes under the mountain!
📷 L. Visconti
Huge aerosol shot yesterday below Corno Grande north face, 2912 m asl (Gran Sasso massif, Apennines, IT) just before the entrance to the 10 km tunnel that passes under the mountain!
📷 L. Visconti
January 10, 2026 at 4:21 PM
Highway with a view! 😲❄️🌊
Huge aerosol shot yesterday below Corno Grande north face, 2912 m asl (Gran Sasso massif, Apennines, IT) just before the entrance to the 10 km tunnel that passes under the mountain!
📷 L. Visconti
Huge aerosol shot yesterday below Corno Grande north face, 2912 m asl (Gran Sasso massif, Apennines, IT) just before the entrance to the 10 km tunnel that passes under the mountain!
📷 L. Visconti
Lovely study site! 🥰🧊
Sampling of a moraine boulder deposited by Bonnepierre Glacier 3.6 ka yr ago for TCN dating 🔨⏲️
The Dôme des Ecrins (4,015 m asl) towers Bonnepierre Gl. from its 1100 m-high NW face! 🏔️
Left moraine is 4.2 ka yr old!
Published here:
www.sciencedirect.com/science/arti...
Sampling of a moraine boulder deposited by Bonnepierre Glacier 3.6 ka yr ago for TCN dating 🔨⏲️
The Dôme des Ecrins (4,015 m asl) towers Bonnepierre Gl. from its 1100 m-high NW face! 🏔️
Left moraine is 4.2 ka yr old!
Published here:
www.sciencedirect.com/science/arti...
January 10, 2026 at 4:03 PM
Lovely study site! 🥰🧊
Sampling of a moraine boulder deposited by Bonnepierre Glacier 3.6 ka yr ago for TCN dating 🔨⏲️
The Dôme des Ecrins (4,015 m asl) towers Bonnepierre Gl. from its 1100 m-high NW face! 🏔️
Left moraine is 4.2 ka yr old!
Published here:
www.sciencedirect.com/science/arti...
Sampling of a moraine boulder deposited by Bonnepierre Glacier 3.6 ka yr ago for TCN dating 🔨⏲️
The Dôme des Ecrins (4,015 m asl) towers Bonnepierre Gl. from its 1100 m-high NW face! 🏔️
Left moraine is 4.2 ka yr old!
Published here:
www.sciencedirect.com/science/arti...
All this wood grew during Otzi's lifetime and died with a glacier advance in 3058 BCE! 🧊🌲💍
#subfossil #wood #Alps
#subfossil #wood #Alps
January 10, 2026 at 1:31 PM
All this wood grew during Otzi's lifetime and died with a glacier advance in 3058 BCE! 🧊🌲💍
#subfossil #wood #Alps
#subfossil #wood #Alps
Western Canada glaciers suffered 2nd-greatest ice loss on record in 2025! 🥈🔥
"it's not a question of if the glaciers are going to disappear, they are going to disappear" (B. Menounos)
www.cbc.ca/news/canada/...
Bare Illecillewaet Glacier, inside Glacier National Park, taken on 18 September 2025 👇
"it's not a question of if the glaciers are going to disappear, they are going to disappear" (B. Menounos)
www.cbc.ca/news/canada/...
Bare Illecillewaet Glacier, inside Glacier National Park, taken on 18 September 2025 👇
January 9, 2026 at 7:45 PM
Western Canada glaciers suffered 2nd-greatest ice loss on record in 2025! 🥈🔥
"it's not a question of if the glaciers are going to disappear, they are going to disappear" (B. Menounos)
www.cbc.ca/news/canada/...
Bare Illecillewaet Glacier, inside Glacier National Park, taken on 18 September 2025 👇
"it's not a question of if the glaciers are going to disappear, they are going to disappear" (B. Menounos)
www.cbc.ca/news/canada/...
Bare Illecillewaet Glacier, inside Glacier National Park, taken on 18 September 2025 👇
Aiguille Verte and Drus tonight! 🤩
Snowpack still very weak in the Northern Alps before the weather change that is expected to finally bring decent snow... ❄️
📷 @pinpinmag
Snowpack still very weak in the Northern Alps before the weather change that is expected to finally bring decent snow... ❄️
📷 @pinpinmag
January 7, 2026 at 5:19 PM
Aiguille Verte and Drus tonight! 🤩
Snowpack still very weak in the Northern Alps before the weather change that is expected to finally bring decent snow... ❄️
📷 @pinpinmag
Snowpack still very weak in the Northern Alps before the weather change that is expected to finally bring decent snow... ❄️
📷 @pinpinmag
Greenland North East coast
Paul Emile Victor
1937-1950
Those who neither recognise nor create Beauty do not deserve this. 🤍
Paul Emile Victor
1937-1950
Those who neither recognise nor create Beauty do not deserve this. 🤍
January 6, 2026 at 3:57 PM
Greenland North East coast
Paul Emile Victor
1937-1950
Those who neither recognise nor create Beauty do not deserve this. 🤍
Paul Emile Victor
1937-1950
Those who neither recognise nor create Beauty do not deserve this. 🤍
Reposted by Melaine Le Roy
A sensational guest post by Derek Cronmiller, Theron Finley Panya Lipovsky and Jan Dettmer of the Yukon Geological Survey: Photos and Preliminary Observations from an Overview Flight of the 6 December 2025 Hubbard Glacier Earthquake, Yukon Territory, Canada.
eos.org/thelandslide...
eos.org/thelandslide...
January 5, 2026 at 7:36 AM
A sensational guest post by Derek Cronmiller, Theron Finley Panya Lipovsky and Jan Dettmer of the Yukon Geological Survey: Photos and Preliminary Observations from an Overview Flight of the 6 December 2025 Hubbard Glacier Earthquake, Yukon Territory, Canada.
eos.org/thelandslide...
eos.org/thelandslide...
Remember to have this figure in memory when speaking to denialists is 2026.
Everything else is just lies.
Anything that contributes to these emissions will make harmonious coexistence on this planet impossible.
Via @hausfath.bsky.social 🙏
Everything else is just lies.
Anything that contributes to these emissions will make harmonious coexistence on this planet impossible.
Via @hausfath.bsky.social 🙏
January 2, 2026 at 7:36 PM
Remember to have this figure in memory when speaking to denialists is 2026.
Everything else is just lies.
Anything that contributes to these emissions will make harmonious coexistence on this planet impossible.
Via @hausfath.bsky.social 🙏
Everything else is just lies.
Anything that contributes to these emissions will make harmonious coexistence on this planet impossible.
Via @hausfath.bsky.social 🙏
Reposted by Melaine Le Roy
Sweden has declared Snowy Owl nationally extinct, marking the first official loss of a bird species in the country for two decades:
Snowy Owl declared extinct in Sweden after decade without breeding
Sweden has declared Snowy Owl nationally extinct after no breeding records since 2015. Climate change, declining prey and shifting ecosystems are believed to have driven the iconic Arctic owl from the country.
bit.ly
January 2, 2026 at 7:02 PM
Sweden has declared Snowy Owl nationally extinct, marking the first official loss of a bird species in the country for two decades:
"It's just cycles.
The climate has always changed"
🤪🤡
The climate has always changed"
🤪🤡
Humans have emitted 2750 gigatons of CO2 since the industrial revolution from burning fossil fuels and land use change. To put this in perspective, this is more than the (dry) mass of all living things on earth and everything humans have ever built combined:
January 2, 2026 at 7:13 PM
"It's just cycles.
The climate has always changed"
🤪🤡
The climate has always changed"
🤪🤡
The Queen of Valais today! 🏔️🥰
📷 Sandra Gorsic 🙏
📷 Sandra Gorsic 🙏
December 30, 2025 at 2:51 PM
The Queen of Valais today! 🏔️🥰
📷 Sandra Gorsic 🙏
📷 Sandra Gorsic 🙏
After a snowfall last October, the weather cleared at duskand low-angle light magnified three major spots of that Mont Blanc massif sector ❄️🧊😍
- The Grands Mulets Hut (3,057 m) at foreground
- The monolithe Aig. de Saussure (3,839 m) to the L.
- The Mont Maudit (4465 m) to the R. 🏔️
- The Grands Mulets Hut (3,057 m) at foreground
- The monolithe Aig. de Saussure (3,839 m) to the L.
- The Mont Maudit (4465 m) to the R. 🏔️
December 29, 2025 at 9:54 PM
After a snowfall last October, the weather cleared at duskand low-angle light magnified three major spots of that Mont Blanc massif sector ❄️🧊😍
- The Grands Mulets Hut (3,057 m) at foreground
- The monolithe Aig. de Saussure (3,839 m) to the L.
- The Mont Maudit (4465 m) to the R. 🏔️
- The Grands Mulets Hut (3,057 m) at foreground
- The monolithe Aig. de Saussure (3,839 m) to the L.
- The Mont Maudit (4465 m) to the R. 🏔️
Rhône Glacier
1910 | 2025
In one century the Rhône Glacier entirely disappeared from the road of Furka Pass! 🧊🔥
What a sight it must have been! 🤩
📷 Juergen Merz (@glacionaut)
1910 | 2025
In one century the Rhône Glacier entirely disappeared from the road of Furka Pass! 🧊🔥
What a sight it must have been! 🤩
📷 Juergen Merz (@glacionaut)
December 29, 2025 at 5:49 PM
Rhône Glacier
1910 | 2025
In one century the Rhône Glacier entirely disappeared from the road of Furka Pass! 🧊🔥
What a sight it must have been! 🤩
📷 Juergen Merz (@glacionaut)
1910 | 2025
In one century the Rhône Glacier entirely disappeared from the road of Furka Pass! 🧊🔥
What a sight it must have been! 🤩
📷 Juergen Merz (@glacionaut)
Reposted by Melaine Le Roy
Retreat of the Breiðamerkurjökull glacier, Iceland
🙏@copernicuseu.bsky.social
Sentinel-2 imagery -Breiðamerkurjökull Georef with #MediaLayers in @esriuk.bsky.social #ArcGISOnline and imported to #3DScene
@copernicusecmwf.bsky.social
@subfossilguy.bsky.social @edhawkins.org
arcg.is/1PKif54
🙏@copernicuseu.bsky.social
Sentinel-2 imagery -Breiðamerkurjökull Georef with #MediaLayers in @esriuk.bsky.social #ArcGISOnline and imported to #3DScene
@copernicusecmwf.bsky.social
@subfossilguy.bsky.social @edhawkins.org
arcg.is/1PKif54
December 29, 2025 at 2:27 PM
Retreat of the Breiðamerkurjökull glacier, Iceland
🙏@copernicuseu.bsky.social
Sentinel-2 imagery -Breiðamerkurjökull Georef with #MediaLayers in @esriuk.bsky.social #ArcGISOnline and imported to #3DScene
@copernicusecmwf.bsky.social
@subfossilguy.bsky.social @edhawkins.org
arcg.is/1PKif54
🙏@copernicuseu.bsky.social
Sentinel-2 imagery -Breiðamerkurjökull Georef with #MediaLayers in @esriuk.bsky.social #ArcGISOnline and imported to #3DScene
@copernicusecmwf.bsky.social
@subfossilguy.bsky.social @edhawkins.org
arcg.is/1PKif54
Survival estimates and population numbers for wolves in France for winter 2024/25! 🐺
Population: ~1088 ± 100
Survival rate: significant decrease (down to 66%)
Cause: special levy scheme, which rose from around 10% of the population (2014-18) to 19% (2019-25)
hal.science/hal-05417020v1
Population: ~1088 ± 100
Survival rate: significant decrease (down to 66%)
Cause: special levy scheme, which rose from around 10% of the population (2014-18) to 19% (2019-25)
hal.science/hal-05417020v1
December 29, 2025 at 2:29 PM
Survival estimates and population numbers for wolves in France for winter 2024/25! 🐺
Population: ~1088 ± 100
Survival rate: significant decrease (down to 66%)
Cause: special levy scheme, which rose from around 10% of the population (2014-18) to 19% (2019-25)
hal.science/hal-05417020v1
Population: ~1088 ± 100
Survival rate: significant decrease (down to 66%)
Cause: special levy scheme, which rose from around 10% of the population (2014-18) to 19% (2019-25)
hal.science/hal-05417020v1
Fancy an immersive tour of Chamonix 130 yrs ago? ⛰️ 🥰
AI-generated overview of classic Mer de Glace tourist route during the Belle Époque! ⏲️
Tourists used to climb up to Montenvers on muleback and descend via the Mauvais Pas, passing by the Chapeau Buvette 🧊 🐎 👣
📽️ C. Boymond Lasserre/ S. Mugnier
AI-generated overview of classic Mer de Glace tourist route during the Belle Époque! ⏲️
Tourists used to climb up to Montenvers on muleback and descend via the Mauvais Pas, passing by the Chapeau Buvette 🧊 🐎 👣
📽️ C. Boymond Lasserre/ S. Mugnier
December 28, 2025 at 2:53 PM
Fancy an immersive tour of Chamonix 130 yrs ago? ⛰️ 🥰
AI-generated overview of classic Mer de Glace tourist route during the Belle Époque! ⏲️
Tourists used to climb up to Montenvers on muleback and descend via the Mauvais Pas, passing by the Chapeau Buvette 🧊 🐎 👣
📽️ C. Boymond Lasserre/ S. Mugnier
AI-generated overview of classic Mer de Glace tourist route during the Belle Époque! ⏲️
Tourists used to climb up to Montenvers on muleback and descend via the Mauvais Pas, passing by the Chapeau Buvette 🧊 🐎 👣
📽️ C. Boymond Lasserre/ S. Mugnier
Landslide on the SE face of Petit Flambeau (3,440 m asl) in the Géant basin around the 13th Dec. 2025! 🔥
📷 Gilles Leger
📷 Gilles Leger
December 28, 2025 at 12:48 PM
Landslide on the SE face of Petit Flambeau (3,440 m asl) in the Géant basin around the 13th Dec. 2025! 🔥
📷 Gilles Leger
📷 Gilles Leger
December 27, 2025 at 8:56 PM
Dent Blanche tonight! 🏔️🥰
📷 Sandra Gorsic 🙏
📷 Sandra Gorsic 🙏
December 27, 2025 at 8:29 PM
Dent Blanche tonight! 🏔️🥰
📷 Sandra Gorsic 🙏
📷 Sandra Gorsic 🙏
Bossons Glacier before the collapse 🤍
16th Aug. 2021
Chiaro-oscuro Glacier series 🖤
16th Aug. 2021
Chiaro-oscuro Glacier series 🖤
December 27, 2025 at 4:02 PM
Bossons Glacier before the collapse 🤍
16th Aug. 2021
Chiaro-oscuro Glacier series 🖤
16th Aug. 2021
Chiaro-oscuro Glacier series 🖤
Reposted by Melaine Le Roy
Bedmap - Ever wondered what the land underneath the frozen ice of Antarctica looks like? We released the most detailed map of Antarctica's hidden landscape, revealing ice up to 4,757m thick and filling major knowledge gaps across the continent.
December 27, 2025 at 9:01 AM
Bedmap - Ever wondered what the land underneath the frozen ice of Antarctica looks like? We released the most detailed map of Antarctica's hidden landscape, revealing ice up to 4,757m thick and filling major knowledge gaps across the continent.
Time to share! 🤍
Here are some of the subfossil wood samples that have been shipped all over Europe these days as counterparts for my recent crowdfunding campaign on Wemakeit! 🧊🔬
Thank you to all contributors for this incredible success! 🙏
Which one do you prefer? 🌲💍
Here are some of the subfossil wood samples that have been shipped all over Europe these days as counterparts for my recent crowdfunding campaign on Wemakeit! 🧊🔬
Thank you to all contributors for this incredible success! 🙏
Which one do you prefer? 🌲💍
December 26, 2025 at 5:27 PM
Time to share! 🤍
Here are some of the subfossil wood samples that have been shipped all over Europe these days as counterparts for my recent crowdfunding campaign on Wemakeit! 🧊🔬
Thank you to all contributors for this incredible success! 🙏
Which one do you prefer? 🌲💍
Here are some of the subfossil wood samples that have been shipped all over Europe these days as counterparts for my recent crowdfunding campaign on Wemakeit! 🧊🔬
Thank you to all contributors for this incredible success! 🙏
Which one do you prefer? 🌲💍
Chiaro-oscuro is the most moving aesthetic 🖤🤍
December 23, 2025 at 10:05 PM
Chiaro-oscuro is the most moving aesthetic 🖤🤍
Love this photo, perfectly capturing the tense fieldwork in these unique locations, perched 200 metres above the valley floor, at the top of a steep (>50°) and frightening gully! 🏔️
Operating the chainsaw with one hand...on one foot! 🔥
Can you spot the subfossil log? 🌲
Mont Miné's days... 2017 🥰
Operating the chainsaw with one hand...on one foot! 🔥
Can you spot the subfossil log? 🌲
Mont Miné's days... 2017 🥰
December 22, 2025 at 10:10 PM
Love this photo, perfectly capturing the tense fieldwork in these unique locations, perched 200 metres above the valley floor, at the top of a steep (>50°) and frightening gully! 🏔️
Operating the chainsaw with one hand...on one foot! 🔥
Can you spot the subfossil log? 🌲
Mont Miné's days... 2017 🥰
Operating the chainsaw with one hand...on one foot! 🔥
Can you spot the subfossil log? 🌲
Mont Miné's days... 2017 🥰
On 20th Dec. in the morning, a huge aerosol caused by the break-up of a serac from the Aiguille Verte summit ice cap ran down the Cordier couloir and ended up on Argentière Glacier! 😮🧊❄️
📽️ Thomas Lebas
📽️ Thomas Lebas
December 22, 2025 at 8:12 PM
On 20th Dec. in the morning, a huge aerosol caused by the break-up of a serac from the Aiguille Verte summit ice cap ran down the Cordier couloir and ended up on Argentière Glacier! 😮🧊❄️
📽️ Thomas Lebas
📽️ Thomas Lebas