Melaine Le Roy

Here is a slice from a larch tree that died beneath an advancing glacier 4,213 years b2k! 🧊🌲💍 You can buy a copy (accompanied by a dendrochronological dating certificate) here: wemakeit.com/projects/gla... and, in doing so, help me to continue this research! 🙏

18h

Here is a slice from a larch tree that died beneath an advancing glacier 4,213 years b2k! 🧊🌲💍 You can buy a copy (accompanied by a dendrochronological dating certificate) here: wemakeit.com/projects/gla... and, in doing so, help me to continue this research! 🙏

Melaine Le Roy reposted

Aletsch Glacier 2021 | 2026 Over these 5 years, it has lost 25 m in thickness at Konkordiaplatz (2900 m asl) 🧊🔥 And likely more than 50 m over the section shown here (1800-2200 m asl) 😱 All this melting is entirely caused by human activity! 🏭

Aletsch Glacier 2021 | 2026 Over these 5 years, it has lost 25 m in thickness at Konkordiaplatz (2900 m asl) 🧊🔥 And likely more than 50 m over the section shown here (1800-2200 m asl) 😱 All this melting is entirely caused by human activity! 🏭

Mont Blanc and Bossons glaciers this morning! 🏔🧊 📷 @lomdumtblanc.bsky.social

Melaine Le Roy reposted

2d

Here is a slice from a larch tree that died beneath an advancing glacier 8,000 years ago! 🧊🌲💍 You can buy a copy (accompanied by a dendrochronological dating certificate) here: wemakeit.com/projects/gla... and, in doing so, help me to continue this research! 🙏

The magnetic granite walls of the Sciora Group (3,274 m) from Soglio this evening! 🤩 This glacial valley was the scene of one of the largest disasters in Alpine history! 😱 3M m3 of rocks fell from Piz Cengalo, swept down the glacier and partially buried the village of Bondo in Aug. 2017! 🌊🔥

Piz Badile (3 308 m asl) tonight! 🏔️❄️

A few years ago, setting foot on the Aletsch Glacier felt like setting out to sea! 🧊🌊 The gigantic crevasses required particular care to find one’s bearings and find one’s way back 🤔 For the first time this year, I didn’t feel that way. The sea is now calm. Before it disappears. 📷 S. Guillet

science.orgLate Holocene reexpansion of the Laurentide Ice SheetDuring interglaciations, the Laurentide Ice Sheet (LIS), which is the largest of the Pleistocene ice sheets, retreats to Arctic Canada, where it achieves a minimum configuration. The reexpansion of th...

Has anthropogenic warming prevented the next glacial cycle? 🧊🔥 Yes, it has. After shrinking throughout much of the early-/mid-Holocene, the LIS began to grow again around 2 ka, but then began shrinking once more around 1960 due to anthropogenic greenhouse forcing! www.science.org/doi/10.1126/...

2d

Here is a slice from a larch tree that died beneath an advancing glacier 8,000 years ago! 🧊🌲💍 You can buy a copy (accompanied by a dendrochronological dating certificate) here: wemakeit.com/projects/gla... and, in doing so, help me to continue this research! 🙏

2d

A lake at 4,000 metres? 🏔️💧 What seems unimaginable became a reality this summer at the Allalinhorn (4,027 m) above Saas Fee 🔥 Between 1 May and 30 September, the 0°C isotherm lay above 4,000 m for more than half the time (79 out of 152 days)! 🌡️ Insane. 📷 Patrick Gasser

4th worst year for Maladeta Glacier! 🧊🔥 A reduction of 234 cm in average thickness 📈 The report is here: chebro.es/documents/2012… Source: Discus 2cT

Rimpfischhorn (4,199 m) and Strahlhorn (4,190 m) yesterday evening! 😍 🏔🌲

Last rays on Dom (4,545 m) and Täschhorn (4,491 m) yesterday evening! 🤩

Aletsch Glacier this morning! 🧊🥰 Just before it started snowing continuously during the afternoon (+15 cm at 2200 m) ❄️

4d

Despite 'suboptimal' conditions (snowcover) I managed to find one decent sample at Zmutt Glacier today! 🧊🌲💍 Cherry on the cake, it has bark, the Holy Graal of tree ring dating! 🤍 And below the Matterhorn!! 🏔

4d

Another day Anothe ice cave! 🧊🔥 Zmutt Glacier has retreated so much that this is the new ice portal! Matterhorn at the background (not visible, just to the right) 🏔

4d

One random mountain (finally slightly white) spotted this morning! 😍

5d

Fortunate to have found this larch subfossil log near Gorner Glacier front yesterday! 🌲🧊 It will enable us to learn more about past Holocene warm periods 📈🌡️ Just 15 days left to help me funding this ongoing research and current fieldwork by purchasing subfossil wood: wemakeit.com/projects/gla...

5d

Collapse of the spectacular ice cave (that formed at the front of #Morteratsch Glacier in 2024) as a result of insane melting of the 2026 summer! 🧊🔥🌡️ 📷 @landervt.bsky.social

6d

Crime against Nature! 🤬 2 days ago Pitztaler Gletscher ski resort literally destroyed the front of the Mittelbergferner (2nd largest in Tirol) to build emergency exit slope for winter How much longer will (very) short-term economic interests continue to lead to such crimes? Boycott. 📷 Glacionaut

6d

Inside an Alpine ice cave today! 🤍 A pure wonder that our children will never experience because of our greed.

6d

What's left of Mer de Glace just downstream Leschaux's confluence yesterday! 😥

Wonder of Nature today! 🤩

'My moraine' 🥰 Been sampling this place precious to my heart once more today! (And every year for last.15 years!) If you are able to support this long term effort, please consider donate here (read all.argumentation before!) Glacier Subfossil Wood 2026 wemakeit.com/projects/gla...

Dent du Géant (4,013 m) today! 😍

Melaine Le Roy reposted

All these trees were alive during Ötzi’s lifetime! 🏹 Mid-Holocene (5.4 to 5.0 ka) subfossil Pinus cembra collected few years back at an Alpine glacier! 🧊🔥 To help me collect more of these samples this year, you can buy other unique pieces of wood here: wemakeit.com/projects/gla... 🙏

All these trees were alive during Ötzi’s lifetime! 🏹 Mid-Holocene (5.4 to 5.0 ka) subfossil Pinus cembra collected few years back at an Alpine glacier! 🧊🔥 To help me collect more of these samples this year, you can buy other unique pieces of wood here: wemakeit.com/projects/gla... 🙏

More than 20°C today at Megeve (1,100 m)! 🥵 20°C like almost every day this October! 😲 20°C while average would be 9.5-12°C! 😱 ... and still no water! 💧 📷 and reflections by Sam Bee 🙏

New measurement of Mont Blanc's elevation revealed today! 🏔️🧊📏 ~ 4 807,47 m asl ~ Alps's highest point has gained 1.88 m over 2023, and has virtually same elevation as in 2021. Highest in 2007 (4 810,90 m asl) 🏅 Bedrock at 4 792 m asl ⛰️ 📷 @lachainemeteo.bsky.social

We are advertising a Master 2 internship (5 months) starting end of January 2027! 📣 👇 If you want to dig into past Holocene glaciation in the Andes through cosmogenic dating and glaciological modeling, this is for you! 🏔️ 🧊 ⏱️ Work based in @cerege.bsky.social. Please apply before Nov. 5th!

Aneto and Aneto Glacier 2015 | 2026 Collapse of the ice continuum at the roof of the Pyrenees! 🧊🔥 (Main Aneto remaining ice body is right to this view) In coming years, we are moving towards complete de-icing of the region 💧 Future generations will enjoy a stone desert... 📷 Miquel Seu

Melaine Le Roy reposted

wemakeit.comGlacier Subfossil Wood 2026 – Crowdfunding on wemakeitWith your support, I will collect ancient wood from melting glaciers across the Alps (FR, CH, AT) to determine when these trees were alive and precisely measure glacier variations during the Holocene!

To help me gather more evidence like this 👇 - and to acquire such a sample! - have a look here: wemakeit.com/projects/gla... ...and spread the word! 🙏

Melaine Le Roy@subfossilguy.bsky.social

Just tree-ring dated this outer fragment of a Swiss stone pine log found at the front of a major Swiss glacier! 🌲💍🧊 460 rings over 10 cm! (= tree lifespan ~700 yrs!) 😲 This implies that the glacier was smaller than it is today between ~4.8 and 4.1 ka! 🔥 (...but not that it was warmer/today!) 🧐

wemakeit.comGlacier Subfossil Wood 2026 – Crowdfunding on wemakeitWith your support, I will collect ancient wood from melting glaciers across the Alps (FR, CH, AT) to determine when these trees were alive and precisely measure glacier variations during the Holocene!

To help me gather more evidence like this 👇 - and to acquire such a sample! - have a look here: wemakeit.com/projects/gla... ...and spread the word! 🙏

Melaine Le Roy@subfossilguy.bsky.social

Just tree-ring dated this outer fragment of a Swiss stone pine log found at the front of a major Swiss glacier! 🌲💍🧊 460 rings over 10 cm! (= tree lifespan ~700 yrs!) 😲 This implies that the glacier was smaller than it is today between ~4.8 and 4.1 ka! 🔥 (...but not that it was warmer/today!) 🧐

Mer de Glace has lost in thickness (on average across its entire surface!) 3.6 m this summer! 🧊🔥 This means 10 cm/day at 1900 m asl! (>13 m)! 😲 ...and that breaks the sad 2022 record! 📈😭 Source: www.montagnes-magazine.com/actus-la-mer...

Just tree-ring dated this outer fragment of a Swiss stone pine log found at the front of a major Swiss glacier! 🌲💍🧊 460 rings over 10 cm! (= tree lifespan ~700 yrs!) 😲 This implies that the glacier was smaller than it is today between ~4.8 and 4.1 ka! 🔥 (...but not that it was warmer/today!) 🧐

Melaine Le Roy reposted

📣📣 Call For Donations! 💰💰 I am raising funds to finance the 2026 'glacier subfossil wood' field campaign! Do you want to continue hearing tales about glaciers and trees? 🧊🌲💍 I need your help! 🤍 To contribute: wemakeit.com/projects/gla... 🙏 Please share it widely! 🙏

📣📣 Call For Donations! 💰💰 I am raising funds to finance the 2026 'glacier subfossil wood' field campaign! Do you want to continue hearing tales about glaciers and trees? 🧊🌲💍 I need your help! 🤍 To contribute: wemakeit.com/projects/gla... 🙏 Please share it widely! 🙏

A first: no snow at Weissfluhjoch (2,536 m, GR)! ❄️🔥 For 1st time in 90 yrs of measurements, there was no snowcover between July and September 2026 at the #SLF research site! Source and 📹 @slfdavos.bsky.social

Homme Glacier and La Meije (3,983 m) at sunset today! 🤩

La Meije (3,983 m) playing hide and seek this evening! 😍

Ailefroide NE face (3,954 m) and its cold based hanging glacier, Le 'Glacier Suspendu', today! 🏔🧊

Glacier Noir and Ailefroide (3,954m) today! 😍

Golden eagle and Râteau East (3,809 m) today! 🏔🦅🤍

Tabuchet Glacier and Doigt de Dieu (3,973 m asl, 2nd highest peak of La Meije) yesterday! 🤩