William Colgan
@glacierbytes.bsky.social
Science hustler into ice-sheet and sea-level research. Canadian living in Denmark and working in Greenland. 'The Color of Ice' documentary is now streaming open-access on WaterBear Network!
www.williamcolgan.net
www.williamcolgan.net
Pinned
William Colgan
@glacierbytes.bsky.social
· Feb 16
Yes, THE COLOR OF ICE is being released into the wilds of the wide open internet! You can now stream our documentary open access on WaterBear Network:
www.waterbear.com/watch/color-...
We’re delighted to add our voices to the messages of climate urgency already curated on WaterBear! 💙
www.waterbear.com/watch/color-...
We’re delighted to add our voices to the messages of climate urgency already curated on WaterBear! 💙
We're back baby! 🎉🎬
Our film -- The Color of Ice -- has been invited back to the UNG:DOX film festival in March 2026. UNG:DOX is the arm of CPH:DOX that introduces younger folks to documentary film as an art form and reflection on society.
Check out cphdox.dk for the full festival lineup.
Our film -- The Color of Ice -- has been invited back to the UNG:DOX film festival in March 2026. UNG:DOX is the arm of CPH:DOX that introduces younger folks to documentary film as an art form and reflection on society.
Check out cphdox.dk for the full festival lineup.
February 18, 2026 at 7:17 AM
We're back baby! 🎉🎬
Our film -- The Color of Ice -- has been invited back to the UNG:DOX film festival in March 2026. UNG:DOX is the arm of CPH:DOX that introduces younger folks to documentary film as an art form and reflection on society.
Check out cphdox.dk for the full festival lineup.
Our film -- The Color of Ice -- has been invited back to the UNG:DOX film festival in March 2026. UNG:DOX is the arm of CPH:DOX that introduces younger folks to documentary film as an art form and reflection on society.
Check out cphdox.dk for the full festival lineup.
Reposted by William Colgan
Cutting the National Center for Atmospheric Research is partisan and short-sighted when the US — like all countries — is confronting accelerating climate change. Fortunately, the US alone can’t reverse the global trend for increasing climate science capacity.
A leading American research lab is slated to lose its critical supercomputing facility, according to a letter released by the National Science Foundation.https://cnn.it/3MoF7zU
February 14, 2026 at 6:21 AM
Cutting the National Center for Atmospheric Research is partisan and short-sighted when the US — like all countries — is confronting accelerating climate change. Fortunately, the US alone can’t reverse the global trend for increasing climate science capacity.
Reposted by William Colgan
Great piece out today in Physics Today on historical origins, contemporary relevance, & fundamental irreplaceability of the National Center for Atmospheric Research, which remains at imminent risk of dismantling for partisan political reasons.
What the National Center for Atmospheric Research means to the atmospheric sciences
Born out of a time of great need for the federal government, NCAR plays a role with few analogues.
physicstoday.aip.org
February 13, 2026 at 5:46 PM
Great piece out today in Physics Today on historical origins, contemporary relevance, & fundamental irreplaceability of the National Center for Atmospheric Research, which remains at imminent risk of dismantling for partisan political reasons.
Cutting the National Center for Atmospheric Research is partisan and short-sighted when the US — like all countries — is confronting accelerating climate change. Fortunately, the US alone can’t reverse the global trend for increasing climate science capacity.
A leading American research lab is slated to lose its critical supercomputing facility, according to a letter released by the National Science Foundation.https://cnn.it/3MoF7zU
February 14, 2026 at 6:21 AM
Cutting the National Center for Atmospheric Research is partisan and short-sighted when the US — like all countries — is confronting accelerating climate change. Fortunately, the US alone can’t reverse the global trend for increasing climate science capacity.
Our new study documents glacier loss in the Himalaya accelerating since 2003. Annual ice losses are consistent with those projected under the high emissions scenario.
This is impactful, but not joyful, science led by Javed Hassan (DTU). ⤵️
Open-access article: ieeexplore.ieee.org/document/113...
This is impactful, but not joyful, science led by Javed Hassan (DTU). ⤵️
Open-access article: ieeexplore.ieee.org/document/113...
February 11, 2026 at 4:26 PM
Our new study documents glacier loss in the Himalaya accelerating since 2003. Annual ice losses are consistent with those projected under the high emissions scenario.
This is impactful, but not joyful, science led by Javed Hassan (DTU). ⤵️
Open-access article: ieeexplore.ieee.org/document/113...
This is impactful, but not joyful, science led by Javed Hassan (DTU). ⤵️
Open-access article: ieeexplore.ieee.org/document/113...
More science, same message: The Greenland ice sheet is likely more sensitive to climate change than we previously understood.
If the ice sheet’s northernmost sector didn’t survive the Holocene Thermal Maximum, it’s tough to see how is will survive anticipated future warming.
If the ice sheet’s northernmost sector didn’t survive the Holocene Thermal Maximum, it’s tough to see how is will survive anticipated future warming.
The Prudhoe ice dome disappeared during a warm period 7000 years ago. Global warming could cause similar temperatures by 2100, showing the Greenland ice sheet’s vulnerability
Northern Greenland ice dome melted before and could melt again
The Prudhoe ice dome disappeared during a warm period 7000 years ago. Global warming could cause similar temperatures by 2100, showing the Greenland ice sheet’s vulnerability
www.newscientist.com
January 14, 2026 at 7:58 PM
More science, same message: The Greenland ice sheet is likely more sensitive to climate change than we previously understood.
If the ice sheet’s northernmost sector didn’t survive the Holocene Thermal Maximum, it’s tough to see how is will survive anticipated future warming.
If the ice sheet’s northernmost sector didn’t survive the Holocene Thermal Maximum, it’s tough to see how is will survive anticipated future warming.
While the world burns with noise and conflict, the Arctic is changing, whether we’re paying attention or not.
👇
👇
Plugged with the world’s oldest and thickest sea ice, the fjords of the Queen Elizabeth Islands have long been impenetrable to icebreaker ships.
But even here, in a place where climate models predict ice will persist the longest, global warming is taking its toll. https://scim.ag/4qNgPxW
But even here, in a place where climate models predict ice will persist the longest, global warming is taking its toll. https://scim.ag/4qNgPxW
The Arctic’s ‘last ice area’ is showing signs of weakness
Mission to Canada’s Queen Elizabeth Islands reveals degradation of a sea ice haven
scim.ag
January 14, 2026 at 7:39 PM
While the world burns with noise and conflict, the Arctic is changing, whether we’re paying attention or not.
👇
👇
🚨 If you're a Canadian-curious researcher currently based outside of Canada, you need to check out the Canada Impact+ Research Chairs programme! 🚨
Competitive single-PI grants for up to 1M CAD/yr for eight years (8M CAD!) to attract folks to Canada! 🤩 #ElbowsUp 🫠
Competitive single-PI grants for up to 1M CAD/yr for eight years (8M CAD!) to attract folks to Canada! 🤩 #ElbowsUp 🫠
January 9, 2026 at 3:15 PM
🚨 If you're a Canadian-curious researcher currently based outside of Canada, you need to check out the Canada Impact+ Research Chairs programme! 🚨
Competitive single-PI grants for up to 1M CAD/yr for eight years (8M CAD!) to attract folks to Canada! 🤩 #ElbowsUp 🫠
Competitive single-PI grants for up to 1M CAD/yr for eight years (8M CAD!) to attract folks to Canada! 🤩 #ElbowsUp 🫠
Hey again ice-sheet modellers! 👋
Reminder that registration for the ISMIP7-Copenhagen workshop closes next week (Jan 15). 👇
Reminder that registration for the ISMIP7-Copenhagen workshop closes next week (Jan 15). 👇
Hey ice-sheet modellers! 👋
The next Ice Sheet Model Intercomparison Project (ISMIP) workshop will be hosted in Copenhagen (at GEUS) 23-25 March 2026. Details to follow!
Learn more about ISMIP at: www.ismip.org
The next Ice Sheet Model Intercomparison Project (ISMIP) workshop will be hosted in Copenhagen (at GEUS) 23-25 March 2026. Details to follow!
Learn more about ISMIP at: www.ismip.org
Ice Sheet Model Intercomparison Project
ISMIP7 is the Ice Sheet Model Intercomparison Project for CMIP7 (pronounced `IZ-mip`)
Melt of Earth's ice sheets is already contributing to flooding experienced by coastal communities, globally.
ISM...
www.ismip.org
January 9, 2026 at 6:43 AM
Hey again ice-sheet modellers! 👋
Reminder that registration for the ISMIP7-Copenhagen workshop closes next week (Jan 15). 👇
Reminder that registration for the ISMIP7-Copenhagen workshop closes next week (Jan 15). 👇
The IPCC will, of course, hum along without U.S. participation, but folks will be hoping for their swift return.
Until then, give hugs to your climate-conscious U.S. friends, and encourage them to keep fighting for a livable future.
It’s always darkest before dawn.
🌍👊
eos.org/research-and...
Until then, give hugs to your climate-conscious U.S. friends, and encourage them to keep fighting for a livable future.
It’s always darkest before dawn.
🌍👊
eos.org/research-and...
January 8, 2026 at 6:45 PM
The IPCC will, of course, hum along without U.S. participation, but folks will be hoping for their swift return.
Until then, give hugs to your climate-conscious U.S. friends, and encourage them to keep fighting for a livable future.
It’s always darkest before dawn.
🌍👊
eos.org/research-and...
Until then, give hugs to your climate-conscious U.S. friends, and encourage them to keep fighting for a livable future.
It’s always darkest before dawn.
🌍👊
eos.org/research-and...
All my American friends right now. 👇
January 6, 2026 at 6:57 PM
All my American friends right now. 👇
I suspect the entire Kingdom of Denmark is celebrating ‘Festivus’ this year, which begins with the quirky tradition of ‘airing of grievances’ 👇
www.theguardian.com/world/2025/d...
www.theguardian.com/world/2025/d...
December 23, 2025 at 2:36 AM
I suspect the entire Kingdom of Denmark is celebrating ‘Festivus’ this year, which begins with the quirky tradition of ‘airing of grievances’ 👇
www.theguardian.com/world/2025/d...
www.theguardian.com/world/2025/d...
Reposted by William Colgan
There are 211,500 glaciers on this planet and we'll lose most of them this century because of human emissions! 🧊🔥
The peak of glacier extinction will occur 2040 to 2055! 📈
But each fraction of degree matters! 🌡️
Some of them can be saved! 🙏
@landervt.bsky.social
www.nature.com/articles/s41...
The peak of glacier extinction will occur 2040 to 2055! 📈
But each fraction of degree matters! 🌡️
Some of them can be saved! 🙏
@landervt.bsky.social
www.nature.com/articles/s41...
December 18, 2025 at 3:44 PM
There are 211,500 glaciers on this planet and we'll lose most of them this century because of human emissions! 🧊🔥
The peak of glacier extinction will occur 2040 to 2055! 📈
But each fraction of degree matters! 🌡️
Some of them can be saved! 🙏
@landervt.bsky.social
www.nature.com/articles/s41...
The peak of glacier extinction will occur 2040 to 2055! 📈
But each fraction of degree matters! 🌡️
Some of them can be saved! 🙏
@landervt.bsky.social
www.nature.com/articles/s41...
Agreed. 👇
As scientists 🧪 who regularly attend UN #climate summits, we've noticed efforts to downplay, confuse and dilute the latest scientific findings, especially from the cryosphere ❄️.
This is alarming.
More details in @theconversation.com
theconversation.com/earths-froze...
@geogdurham.bsky.social
This is alarming.
More details in @theconversation.com
theconversation.com/earths-froze...
@geogdurham.bsky.social
Earth’s frozen regions are sending a clear warning about climate change – but politicians are ignoring it
The warning lights from the cryosphere have been flashing red for several years and governments and policymakers ignore this at their peril.
theconversation.com
December 18, 2025 at 7:31 PM
Agreed. 👇
🥺
The NSF has a short post on how it plans to take apart NCAR. (No, that is not a sentence I ever foresaw typing.)
www.nsf.gov/news/intent-...
www.nsf.gov/news/intent-...
Intent to restructure critical weather science infrastructure
The U.S. National Science Foundation (NSF) announced today that the agency is reviewing the structure of the research and observational capabilities operated by the NSF National Center for Atmospheric...
www.nsf.gov
December 17, 2025 at 8:25 PM
🥺
I’ve enjoyed many years of @agu.org Annual Meeting — it’s a fantastic gathering of our diverse research community! — but it seems I’m not alone in sitting out this year. 👀
Wishing a delightful #AGU25 to all who participate!
Wishing a delightful #AGU25 to all who participate!
Attendance at US-based science conferences is bouncing around this year but generally down. #AGU25 has ~10k fewer this year! I explored these trends for @nature.com — including solutions to keep conferences local & productive:
www.nature.com/articles/d41...
🧪
www.nature.com/articles/d41...
🧪
Scientists skip key US meetings — and seize on smaller alternatives
Researchers are devising creative ways to get together as Trump’s policies curb travel to US gatherings.
www.nature.com
December 17, 2025 at 8:23 PM
The folks at @ncar-ucar.bsky.social are among the world’s best minds on global climate— exceptional individually and extraordinary together! I have fond memories of the long cycle up to the Mesa Laboratory during my PhD at Boulder.
Thoughts and prayers for them tonight. 🥺
Thoughts and prayers for them tonight. 🥺
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 8:08 PM
The folks at @ncar-ucar.bsky.social are among the world’s best minds on global climate— exceptional individually and extraordinary together! I have fond memories of the long cycle up to the Mesa Laboratory during my PhD at Boulder.
Thoughts and prayers for them tonight. 🥺
Thoughts and prayers for them tonight. 🥺
Yes! @icymatters.bsky.social and I are seeking a project coordinator for using highly specialized vehicles on the Greenland ice sheet! It's a four-year position across two projects: 'Seis-Sustain' funded by the @novo-nordisk.bsky.social and 'FirnMelt' funded by @erc.europa.eu.
December 16, 2025 at 8:38 AM
Yes! @icymatters.bsky.social and I are seeking a project coordinator for using highly specialized vehicles on the Greenland ice sheet! It's a four-year position across two projects: 'Seis-Sustain' funded by the @novo-nordisk.bsky.social and 'FirnMelt' funded by @erc.europa.eu.
Hey Folks! 👋
If you've got a moment -- mere moment! -- drop a like for 'Girls on Ice Austria' in this empowerment fundraiser by FrauTIROLER. They receive 1€ for every like up to 5000 likes! 👍
www.frautiroler.info/girls-on-ice...
If you've got a moment -- mere moment! -- drop a like for 'Girls on Ice Austria' in this empowerment fundraiser by FrauTIROLER. They receive 1€ for every like up to 5000 likes! 👍
www.frautiroler.info/girls-on-ice...
Girls* on Ice Austria 2026: Expedition, Workshops & Alumni-Treff - FrauTIROLER
Stell dir vor, du bist ein fünfzehnjähriges Mädchen, das in einem Dorf im Unterland wohnt. Deine Mutter ist… Mehr Info
www.frautiroler.info
December 9, 2025 at 7:16 AM
Hey Folks! 👋
If you've got a moment -- mere moment! -- drop a like for 'Girls on Ice Austria' in this empowerment fundraiser by FrauTIROLER. They receive 1€ for every like up to 5000 likes! 👍
www.frautiroler.info/girls-on-ice...
If you've got a moment -- mere moment! -- drop a like for 'Girls on Ice Austria' in this empowerment fundraiser by FrauTIROLER. They receive 1€ for every like up to 5000 likes! 👍
www.frautiroler.info/girls-on-ice...
Our first Lead Author Meeting of the #IPCC Seventh Assessment Report was an incredible experience last week! Merci @ipcc.bsky.social!
Now, we are writing our way towards zero-order-draft (ZOD).
#LAM1 #ClimateScience #ClimateAction #ClimateChange #ClimatePolicy #Adaptation #Mitigation #AR7
Now, we are writing our way towards zero-order-draft (ZOD).
#LAM1 #ClimateScience #ClimateAction #ClimateChange #ClimatePolicy #Adaptation #Mitigation #AR7
December 8, 2025 at 8:29 PM
Our first Lead Author Meeting of the #IPCC Seventh Assessment Report was an incredible experience last week! Merci @ipcc.bsky.social!
Now, we are writing our way towards zero-order-draft (ZOD).
#LAM1 #ClimateScience #ClimateAction #ClimateChange #ClimatePolicy #Adaptation #Mitigation #AR7
Now, we are writing our way towards zero-order-draft (ZOD).
#LAM1 #ClimateScience #ClimateAction #ClimateChange #ClimatePolicy #Adaptation #Mitigation #AR7
Yes, this week Lead Authors for the @ipcc.bsky.social Seventh Assessment Report (AR7) are meeting in Paris — almost 700 of us across all three working groups!
As IPCC Chair Jim Skea shares, there's even some highest-level climate diplomacy happening beyond the plenary sessions. 👇
As IPCC Chair Jim Skea shares, there's even some highest-level climate diplomacy happening beyond the plenary sessions. 👇
December 2, 2025 at 8:35 PM
Yes, this week Lead Authors for the @ipcc.bsky.social Seventh Assessment Report (AR7) are meeting in Paris — almost 700 of us across all three working groups!
As IPCC Chair Jim Skea shares, there's even some highest-level climate diplomacy happening beyond the plenary sessions. 👇
As IPCC Chair Jim Skea shares, there's even some highest-level climate diplomacy happening beyond the plenary sessions. 👇
🎉🇩🇰🌍
As Denmark announces the world's most ambitious climate plan, COP30 negotiations are sharpening with a framework for two packages now. Read the latest from Belém: bloom.bg/49mrZEx
November 19, 2025 at 8:12 PM
🎉🇩🇰🌍
You can learn more about the Climate Vulnerable Forum, and their bid for observer status at the UN General Assembly, at: cvfv20.org
November 18, 2025 at 6:36 PM
You can learn more about the Climate Vulnerable Forum, and their bid for observer status at the UN General Assembly, at: cvfv20.org
Denmark at #COP30 quietly showing the way to >80% reduction in carbon dioxide emissions by 2035 (relative to 1990 NDC baseline). 🇩🇰✊
Regeringen vil have et af verdens mest ambitiøse klimamål for 2035.
Klimaminister @larsaagaard.bsky.social har netop præsenteret regeringens forslag på COP30 i Belem.
Regeringen foreslår, at der fastsættes et punktmål for 2035 på mellem 82 og 85 procent.
Læs mere👇
www.kefm.dk/aktuelt/nyhe...
Klimaminister @larsaagaard.bsky.social har netop præsenteret regeringens forslag på COP30 i Belem.
Regeringen foreslår, at der fastsættes et punktmål for 2035 på mellem 82 og 85 procent.
Læs mere👇
www.kefm.dk/aktuelt/nyhe...
November 17, 2025 at 6:44 PM
Denmark at #COP30 quietly showing the way to >80% reduction in carbon dioxide emissions by 2035 (relative to 1990 NDC baseline). 🇩🇰✊
Reposted by William Colgan
We cannot air condition our way out of the heat crisis.
Many cooling methods add planet warming emissions, in-turn increasing cooling demand.
But solutions exist to make cooling more sustainable & affordable: www.unep.org/news-and-sto...
#COP30
Many cooling methods add planet warming emissions, in-turn increasing cooling demand.
But solutions exist to make cooling more sustainable & affordable: www.unep.org/news-and-sto...
#COP30
November 16, 2025 at 8:01 AM
We cannot air condition our way out of the heat crisis.
Many cooling methods add planet warming emissions, in-turn increasing cooling demand.
But solutions exist to make cooling more sustainable & affordable: www.unep.org/news-and-sto...
#COP30
Many cooling methods add planet warming emissions, in-turn increasing cooling demand.
But solutions exist to make cooling more sustainable & affordable: www.unep.org/news-and-sto...
#COP30