Aaron Putnam

A good night for the Resistance. Well done Serbia and Brazil!

Springtails on the march…

Unpopular opinion: I like the platypus USPS EV rigs.

These pages no longer provide international observations. It's a good thing that weather stops at international borders. 😢

The world needs more train tunes. #BMFS

🚨New paper!🚨 (I feel very fortunate to have been involved with this effort and wonderful team!) 🌊

✨ New paper ✨ on subsurface ocean warming in both N and S hemispheres during the early deglaciation! 🌊 I am incredibly proud of this work, which is led by my former graduate student, Cassie Stirpe. www.nature.com/articles/s43...

Thai dinner with @mkaplan.bsky.social and George Denton. Mike will be giving the seminar for the School of Earth and Climate Science tomorrow… Stay tuned.

In comparison to the recent revelations that Trump is abandoning the free world and siding with Russia and Putin, the bone-headedness of Guardian columnist Simon Jenkins is small beer, but I can't let it pass without comment. He says, no point to teach kids math! www.theguardian.com/commentisfre...

🗳️ Elections matter more than ever this year. 📍 Early voting is underway in many states, and Election Day is approaching. To check registration status, find your polling place, or learn how to register, visit sciencevotesthefuture.org 🗣️ Make a plan to vote. sciencevotesthefuture.org

Ho boy, do I have a story for you. The question of how ice breaks has been central to glaciology for well over a century.

First half of October. 🔥

Our new paper is out! How can we trace ocean currents a million years ago? During my PhD, I studied chemical signals preserved in deep-sea sediments to answer this question. But I quickly discovered that scientists don't always agree on how much we can trust them. 1/5🧵

To all #paleoceanography people: give a read to this new paper co-authored by Maayan Yehudai! 👇🏻 🧪 ⚒️ 🌊 🦣 👩‍🔬 #PaleoSky

Preprint alert: coalcrossover.org now available without a password: 6,580 coal units in 2,384 plants in 73 countries. The math: for >95% of these units, coal OpEx alone > full CapEx + OpEx aka "LCOE" for solar and/or wind. The preprint explaining how, what, why: gwagner.com/coalcrossover

As a child of the 80’s and a teen during the ‘98 El Niño, this hits.

My heart breaks for mathematicians whose lives and careers are being destroyed by AI — and especially this PhD student, who doesn’t even know he is a poet

I’m voting for @hannahpingree.bsky.social. She cares about kids and their future. Make Maine a great place to be a kid and vote for Hannah.

Yes indeed, scarier than climate change. Solar geoengineering advocates are now trying to hook this to discussions of overshoot by rebranding solargeo as "climate stabilization." It's not. It sets up the climate for a destabilization of a kind that is unprecedented in all of Earth history.

Billions of dollars’ worth of contracts predicting oil would fall and the S&P 500 would rise were placed about 15 minutes before Trump announced a U-turn on Iran in a post on Truth Social. CFTC staff began to investigate...then were told to lay off. www.bloomberg.com/news/feature...

Very few people study air-water gas exchange, which determines how quickly the ocean takes up atmospheric CO₂. But because of marine CO₂ removal, everyone is throwing the term "gas exchange" around. So here's everyone's chance to attend a gas exchange meeting to learn and share. www.gtws2027.se

From paper to proof: revealing Congo Basin warming through rescued climate archives 1 million rescued weather observations from original paper sheets allow @derrickmuheki.bsky.social et al to clearly show warming in a region of very sparse historical observations esd.copernicus.org/articles/17/...

Phish friends (others feel free to ignore)… Just noticed this. What’s going on?

CK5 is making 🐸 eyes…

🌊 The global ocean holds some 40 times more carbon than the atmosphere. It absorbs more than a quarter of our emissions every year, slowing the pace of climate change. The Southern Ocean has an outsized role in the #carbon budget and the #climate system. 🫧 aapp.shorthandstories.com/our-climate-...

Piper @mikelowetpt.bsky.social

Another massive flood caused by a landslide in Nepal - this one in the Budhi Gandaki valley. No decent cloud-free imagery from @planet.com yet but this is from @esa.int Sentinel2.

The “Cottonwood curse” may be the new “Bristlecone curse” after this…

Congratulations to #quartz. I have learned much from the secrets locked within your lattice. And I will probably suffer from lifelong nightmares that involve dissolving you with HF.

Congratulations to our Mineral Cup 2026 Champion Quartz! For #MinCup26, we collectively chose a nostalgic beauty of resilience as persistence as our champion. Please celebrate #Quartz, a friend to humans since time immemorial! www.mineralcup.org/about/2026-q...

It's Friday afternoon and I am stuck waiting for a UPS delivery. So... send me seismology and tectonics (geology) questions and I will answer them or find stuff to do so.

Turns out we don’t have to invoke weapons of mass destruction when talking about ocean heat uptake. The ocean absorbed a record-breaking 23 zettajoules of heat last year, equivalent to 40 times the energy used by humanity. It’s not going to end well.

All latitude bands outside of the Antarctic saw above average temperatures over the last 3 months. The tropical warming is notable, which is partly associated with El Niño. [Plot shows zonal-mean surface air temperature anomalies, where latitude = y-axis (not scaled by distance). Data: GISTEMPv4]

Beach ridge complex and dunes at Pointe aux Chenes, Michigan. I've got it in my slides for a case study on post-glacial rebound and other causes of lake level change on the Great Lakes, and I had to post it here again.

I still want a pet dicynodont.

Congratulations @melissaberke.bsky.social on being awarded the @agu “Asahiko Taira International Scientific Ocean Drilling Research Prize”!!

🏆 AGU is excited to announce the recipients of the 2026 Union Medals, Awards and Prizes; Fellows; and Section Awards and Lectures. Please join us in congratulating these accomplished individuals. spklr.io/63325ETfjN

About to fly from Newark to Bangor, and we were informed that there will be no beverage service and that the seatbelt light will be on the entire flight. Now I can see why…

The US National Science Foundation Directorate for Geosciences, which has funded most of my research over the past three decades, has been enshitified by Trump and his lackeys.

On The Climate Brink: The Atmosphere Just Set a Water Vapor Record. Aug. 2026 probably had more water vapor in the atmosphere than any month in the last few thousand years, if not a 100,000 years. www.theclimatebrink.com/p/the-atmosp...