Aaron Putnam
@aaronputnam.bsky.social
Dad. Husband. Associate Professor of Earth Science at the University of Maine. I am interested in glaciers and climate in the past, present, and future.
Reposted by Aaron Putnam
The Prehistoric Planet trailer is out! It was an honor to work with this incredible team: youtube.com/watch?v=f7kv...
Prehistoric Planet: Ice Age — Season 3 Official Trailer | Apple TV
YouTube video by Apple TV
youtube.com
November 6, 2025 at 6:06 PM
The Prehistoric Planet trailer is out! It was an honor to work with this incredible team: youtube.com/watch?v=f7kv...
🧪⚒️
The PRI Museum of the Earth, in Ithaca New York, is one of the great museums of the East Coast, punching way above its size and with an incomparable research collection. Help save them! www.priweb.org/mortgage-cam...
Mortgage Campaign Landing Page — Paleontological Research Institution
www.priweb.org
November 6, 2025 at 12:50 PM
🧪⚒️
Reposted by Aaron Putnam
The PRI Museum of the Earth, in Ithaca New York, is one of the great museums of the East Coast, punching way above its size and with an incomparable research collection. Help save them! www.priweb.org/mortgage-cam...
Mortgage Campaign Landing Page — Paleontological Research Institution
www.priweb.org
November 5, 2025 at 8:47 PM
The PRI Museum of the Earth, in Ithaca New York, is one of the great museums of the East Coast, punching way above its size and with an incomparable research collection. Help save them! www.priweb.org/mortgage-cam...
Reposted by Aaron Putnam
World premier Saturday 29 November, of The Exoplanets, composed by my colleague composer Robert Laidlow, and performed by the London Symphony Orchestra at Royal Festival Hall. Some background on the genesis of the piece is here: www.jesus.ox.ac.uk/astrophysics...
Astrophysics chat inspires Fellow’s new musical work – Jesus College
www.jesus.ox.ac.uk
November 4, 2025 at 11:12 AM
World premier Saturday 29 November, of The Exoplanets, composed by my colleague composer Robert Laidlow, and performed by the London Symphony Orchestra at Royal Festival Hall. Some background on the genesis of the piece is here: www.jesus.ox.ac.uk/astrophysics...
Reposted by Aaron Putnam
Your daily dose of climate hope. From the team at RMI: rmi.org/wp-content/u...
November 3, 2025 at 11:36 PM
Your daily dose of climate hope. From the team at RMI: rmi.org/wp-content/u...
Reposted by Aaron Putnam
Our new study emphasizes the potential importance of the Southern Ocean under ambitious emission mitigation:
agupubs.onlinelibrary.wiley.com/doi/10.1029/..., with an EOS spotlight: eos.org/research-spo....
agupubs.onlinelibrary.wiley.com/doi/10.1029/..., with an EOS spotlight: eos.org/research-spo....
Southern Ocean Heat Burp in a Cooling World
Under net-negative CO2 emissions and global cooling ocean heat release causes substantial centennial scale atmospheric warming The ocean heat release originates from Southern Ocean deep convectio...
agupubs.onlinelibrary.wiley.com
October 22, 2025 at 2:54 PM
Our new study emphasizes the potential importance of the Southern Ocean under ambitious emission mitigation:
agupubs.onlinelibrary.wiley.com/doi/10.1029/..., with an EOS spotlight: eos.org/research-spo....
agupubs.onlinelibrary.wiley.com/doi/10.1029/..., with an EOS spotlight: eos.org/research-spo....
Reposted by Aaron Putnam
It's v hard to tell but it might be Didal Glacier, which is surge-type and actually was surging in the months prior to this video. I don't know if something switched allowing the runaway mode seen in the video. Curious for thoughts of other glaciologists 🧪⚒️❄️ www.planet.com/stories/dida...
October 31, 2025 at 7:03 PM
It's v hard to tell but it might be Didal Glacier, which is surge-type and actually was surging in the months prior to this video. I don't know if something switched allowing the runaway mode seen in the video. Curious for thoughts of other glaciologists 🧪⚒️❄️ www.planet.com/stories/dida...
Excellent spooky bog 🧵!
Do you love bogs and Halloween? If so, please follow and share this thread to explore the eerie, the dark and the supernatural side of bog ecosystems. BogBoo. 1/
You are terrifying
and strange and
beautiful,
something not
everyone knows how
to love.
-Warsan Shire
You are terrifying
and strange and
beautiful,
something not
everyone knows how
to love.
-Warsan Shire
October 31, 2025 at 7:21 PM
Excellent spooky bog 🧵!
Reposted by Aaron Putnam
Do you love bogs and Halloween? If so, please follow and share this thread to explore the eerie, the dark and the supernatural side of bog ecosystems. BogBoo. 1/
You are terrifying
and strange and
beautiful,
something not
everyone knows how
to love.
-Warsan Shire
You are terrifying
and strange and
beautiful,
something not
everyone knows how
to love.
-Warsan Shire
October 31, 2025 at 3:03 PM
Do you love bogs and Halloween? If so, please follow and share this thread to explore the eerie, the dark and the supernatural side of bog ecosystems. BogBoo. 1/
You are terrifying
and strange and
beautiful,
something not
everyone knows how
to love.
-Warsan Shire
You are terrifying
and strange and
beautiful,
something not
everyone knows how
to love.
-Warsan Shire
Reposted by Aaron Putnam
I wanted to offer some thoughts on the Gates climate memo that has been circulating this week. While I can't directly speak for others, I can say that my own response is one of dismay & deep frustration (and that this view is shared by many climate/Earth scientists). [1/n]
October 30, 2025 at 5:02 PM
I wanted to offer some thoughts on the Gates climate memo that has been circulating this week. While I can't directly speak for others, I can say that my own response is one of dismay & deep frustration (and that this view is shared by many climate/Earth scientists). [1/n]
Reposted by Aaron Putnam
NOAA Hurricane Hunters going through this 👇 to collect valuable scientific data to help forecast Hurricane #Melissa. 🧪
THEY. WERE. DOING. THIS. WITHOUT. PAY.
NOAA’s hurricane hunter pilots (and Kermit The Frog hanging from the control panel) fly into Hurricane Melissa.
Extraordinary bravery, saving lives.
(🎥 Cmdr. Danielle Varwig, NOAA Corps).
NOAA’s hurricane hunter pilots (and Kermit The Frog hanging from the control panel) fly into Hurricane Melissa.
Extraordinary bravery, saving lives.
(🎥 Cmdr. Danielle Varwig, NOAA Corps).
October 30, 2025 at 4:36 PM
NOAA Hurricane Hunters going through this 👇 to collect valuable scientific data to help forecast Hurricane #Melissa. 🧪
Reposted by Aaron Putnam
Amazing COLDEX.org results - 6Million year old ice, with bubbles of old atmosphere. Thank you ice, for the stories you share about our planet and its climate. Led by Sarah Shakleton #glaciology #womeninstem #cryosphere #Antarctica
www.pnas.org/doi/10.1073/...
news.oregonstate.edu/news/six-mil...
www.pnas.org/doi/10.1073/...
news.oregonstate.edu/news/six-mil...
Miocene and Pliocene ice and air from the Allan Hills blue ice area, East Antarctica | PNAS
Antarctic ice cores provide a unique archive of Earth’s atmosphere and its largest
extant ice sheet. The oldest continuous ice core extends back 80...
www.pnas.org
October 29, 2025 at 3:19 PM
Amazing COLDEX.org results - 6Million year old ice, with bubbles of old atmosphere. Thank you ice, for the stories you share about our planet and its climate. Led by Sarah Shakleton #glaciology #womeninstem #cryosphere #Antarctica
www.pnas.org/doi/10.1073/...
news.oregonstate.edu/news/six-mil...
www.pnas.org/doi/10.1073/...
news.oregonstate.edu/news/six-mil...
Reposted by Aaron Putnam
Last year, @michaelfwehner.bsky.social and Jim Kossin made the scientific case for a Cat6 cyclone. This week, Hurricane Melissa became the 6th storm in recorded history to smash through that threshold, with max winds of 216mph. And conditions leading to these storms are on the rise.
Read more:
Read more:
The growing inadequacy of an open-ended Saffir–Simpson hurricane wind scale in a warming world | PNAS
Global warming increases available sensible and latent heat energy, increasing the
thermodynamic potential wind intensity of tropical cyclones (TCs...
www.pnas.org
October 29, 2025 at 3:32 AM
Last year, @michaelfwehner.bsky.social and Jim Kossin made the scientific case for a Cat6 cyclone. This week, Hurricane Melissa became the 6th storm in recorded history to smash through that threshold, with max winds of 216mph. And conditions leading to these storms are on the rise.
Read more:
Read more:
Reposted by Aaron Putnam
I've been involved in this CH4 vs CO2 thing for years, and indeed GWP* is a concise embodiment of the concept I proposed in my Annual Reviews article on short lived climate pollution. I cannot understand why something like GWP*, which demonstrably
October 19, 2025 at 9:29 AM
I've been involved in this CH4 vs CO2 thing for years, and indeed GWP* is a concise embodiment of the concept I proposed in my Annual Reviews article on short lived climate pollution. I cannot understand why something like GWP*, which demonstrably
Reposted by Aaron Putnam
the Muppets have been real quiet since the Louvre heist
October 19, 2025 at 10:19 PM
the Muppets have been real quiet since the Louvre heist
I am proud to report a major breakthrough. Our 7-yr old asked what was for dinner.
“Lasagna.”
“What’s that?” she asked (we have had lasagna several times, but she always refused to touch it)….
1/2
“Lasagna.”
“What’s that?” she asked (we have had lasagna several times, but she always refused to touch it)….
1/2
October 19, 2025 at 11:12 PM
I am proud to report a major breakthrough. Our 7-yr old asked what was for dinner.
“Lasagna.”
“What’s that?” she asked (we have had lasagna several times, but she always refused to touch it)….
1/2
“Lasagna.”
“What’s that?” she asked (we have had lasagna several times, but she always refused to touch it)….
1/2
Reposted by Aaron Putnam
PHILLY
I stepped out to walk across Philly last night and get a sense of things. City Hall always captures me here, Philadelphia has maintained its European layout and much of its early architecture.
I stepped out to walk across Philly last night and get a sense of things. City Hall always captures me here, Philadelphia has maintained its European layout and much of its early architecture.
October 18, 2025 at 3:34 PM
PHILLY
I stepped out to walk across Philly last night and get a sense of things. City Hall always captures me here, Philadelphia has maintained its European layout and much of its early architecture.
I stepped out to walk across Philly last night and get a sense of things. City Hall always captures me here, Philadelphia has maintained its European layout and much of its early architecture.
October 18, 2025 at 8:26 PM
Reposted by Aaron Putnam
"we propose this Potassium-40 deficit represents primitive proto-Earth mantle domains that largely escaped mantle mixing after the [moon-forming] giant impact and exist in the present-day deep mantle, contributing to some modern hotspot volcanism" ⚒️
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Potassium-40 isotopic evidence for an extant pre-giant-impact component of Earth’s mantle - Nature Geoscience
Some mafic rocks have a ⁴⁰K/³⁹K ratio lower than all other terrestrial samples, according to isotopic composition analyses, suggesting parts of Earth’s mantle have retained their composition prior to ...
www.nature.com
October 14, 2025 at 10:48 PM
"we propose this Potassium-40 deficit represents primitive proto-Earth mantle domains that largely escaped mantle mixing after the [moon-forming] giant impact and exist in the present-day deep mantle, contributing to some modern hotspot volcanism" ⚒️
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Aaron Putnam
Faculty and Student Unions understand that the only way through this is by university communities joining forces.
When will administrators listen?
When will administrators listen?
Student government leaders of MIT, UVA, U of AZ, Dartmouth, UPenn, Brown, and Vanderbilt united in their opposition to the "compact" proposed by the Trump administration.
October 14, 2025 at 2:36 AM
Faculty and Student Unions understand that the only way through this is by university communities joining forces.
When will administrators listen?
When will administrators listen?
If you see this post a sunset.
Juneau Icefield, Alaska.
Juneau Icefield, Alaska.
October 14, 2025 at 1:47 AM
If you see this post a sunset.
Juneau Icefield, Alaska.
Juneau Icefield, Alaska.
Reposted by Aaron Putnam
🚨New Paper 🚨
The PeatPic Project: Predicting plot-scale green leaf #phenology across #peatlands
So happy to see this paper online — one of my favourite projects!
We explored how to capture how peatlands change colour using smartphones and community science!
iopscience.iop.org/article/10.1...
The PeatPic Project: Predicting plot-scale green leaf #phenology across #peatlands
So happy to see this paper online — one of my favourite projects!
We explored how to capture how peatlands change colour using smartphones and community science!
iopscience.iop.org/article/10.1...
October 13, 2025 at 12:28 PM
🚨New Paper 🚨
The PeatPic Project: Predicting plot-scale green leaf #phenology across #peatlands
So happy to see this paper online — one of my favourite projects!
We explored how to capture how peatlands change colour using smartphones and community science!
iopscience.iop.org/article/10.1...
The PeatPic Project: Predicting plot-scale green leaf #phenology across #peatlands
So happy to see this paper online — one of my favourite projects!
We explored how to capture how peatlands change colour using smartphones and community science!
iopscience.iop.org/article/10.1...
Reposted by Aaron Putnam
In contrast to the other side of the #Arctic, sea ice along the Atlantic front is a record low for this time of year. This relates to the recent record warmth and southerly winds/waves pushing the marginal ice zone closer to the North Pole.
Data from @nsidc.bsky.social (nsidc.org/data/seaice_...).
Data from @nsidc.bsky.social (nsidc.org/data/seaice_...).
October 13, 2025 at 12:05 PM
In contrast to the other side of the #Arctic, sea ice along the Atlantic front is a record low for this time of year. This relates to the recent record warmth and southerly winds/waves pushing the marginal ice zone closer to the North Pole.
Data from @nsidc.bsky.social (nsidc.org/data/seaice_...).
Data from @nsidc.bsky.social (nsidc.org/data/seaice_...).
Reposted by Aaron Putnam
Stay strong! commonslibrary.org/defending-de...
Defending Democracy with Humor and Dilemma Actions Tactics
The Commons is an online library for the change makers of the world and for those interested in social change, activism, organising, advocacy and justice.
commonslibrary.org
October 13, 2025 at 2:17 AM
Stay strong! commonslibrary.org/defending-de...