Being harassed at an NBA game by the “public relations” guy of a startup you just wrote an op-ed against and ending it in a shouting match is definitely an experience I did not have in my AGU bingo for 2025.

At an @agu.org Town Hall today, @ncar-ucar.bsky.social President Antonio Busalacchi spoke to #AGU25 attendees about what's at stake if NCAR is dismantled. One attendee asked anyone who uses NCAR research to stand up. Almost everyone in the room stood. Read more here: eos.org/research-and...

Good to be here amongst family. @ncar-ucar.bsky.social

I’m going to be brutal: I think anyone that will engage with NSF on their request for feedback about how best to dismantle NCAR without just being clear it’s a shitty stupid plan - in the hope of getting some spoil, perhaps - needs to be shunned forever and globally.

Anything I were to say today about the NCAR news would probably put me at risk of having my Green Card revoked, so I'm going to have to shut up and turn my heartbreak and anger into something productive.

Kasatochi (2008), Sarychev (2009), Nabro (2011), and Raikoke (2019) all had higher sulfur contents than HT but a few things made HT stand out: 1) the WV, while huge, was rather far away from the tropopause, and advected up even higher, leading to a very small LW forcing \cont

I’m glad that Italian Cuisine has UNESCO status now because I look forward to my “Yes I’m Italian and I love pineapple on pizza” opinion having Crime Against Humanity status.

Just published to wrap up the year: “Response of Tipping Elements to Different Strategies of Stratospheric Aerosol Injection” We analyzed the response of various climate metrics relevant to a set of climate tipping element under SSP2-4.5 and under a set of SAI scenarios modeled using CESM2.

Just published to wrap up the year: “Response of Tipping Elements to Different Strategies of Stratospheric Aerosol Injection” We analyzed the response of various climate metrics relevant to a set of climate tipping element under SSP2-4.5 and under a set of SAI scenarios modeled using CESM2.

Watch our new WCRP video! See how global climate scientists work together to provide trusted, actionable climate information: https://loom.ly/pZxvxTg #WCRP #WMO #OceanScience #OceanAction #ISC

It’s so very easy to weaponize uncertainty:“We just can’t know if it’s safe, so better not to act at all”. Everyone is glad when the precautionary principle is used as a cudgel against something they already dislike, but the problem comes when it’s used to ban something you know works-like vaccines🤓

For unfathomable reasons, the last class of the semester makes me *so emotional*, and that, coupled with the fact the students have the sweet yet terrible vice to clap when the last class ends and I say goodbye means I always conclude the semester muttering inaudible things trying not to cry.

COP30 text failures are more than one: failing to mention the necessity of fossil-fuel phase-out is an obvious one, but gaslighting the world over the fact that there is a chance of “keeping 1.5°C within reach” is another. The latter however is not any lighter: it directly enables the former.

COP30 text failures are more than one: failing to mention the necessity of fossil-fuel phase-out is an obvious one, but gaslighting the world over the fact that there is a chance of “keeping 1.5°C within reach” is another. The latter however is not any lighter: it directly enables the former.

When one reads reports/articles about “We’re on track for 2.6 degrees of warming” it would be useful to bear in mind that’s not peak warming that will be reached, that’s just an arbitrary cutoff value at a nice round date, 2100.

www.rollingstone.com/politics/pol... @hollyjeanbuck.bsky.social, @davidho.bsky.social and I were interviewed by @rollingstone.com about the Trump admin and Climate Intervention research. Compared to initial hopes/worries, Trump admin has shown zero interest to support any kind of climate research.

Giving a bully your lunch money doesn't make them leave you alone. It shows them you're an easy mark and encourages them to demand more. Appeasing fascists doesn't make them less fascist. It shows them you're weak and encourages them to demand more. It's only ONE OF THE MOST REPEATED LESSONS EVER!

We have more than enough evidence to conclude that the Trump administration -is committed to attacking academia -cannot be trusted to honor its commitments, nor to follow court orders -has weaponized "fighting antisemitism" in bad faith -will use Cornell's appeasement to go after other universities

Cornell agreed to pay $30m, hand over admissions data with demographic breakdowns, produce annual "campus climate" surveys to check on antisemitism and changes "since October of 2023," and—here's the dumbest part they agreed to—that the govt can open new investigations whenever it wants. Appeasers.

As an educator at Cornell, I feel like it's my duty to just say "bribes are bad, don't pay bribes".

Please, please, please, stop with the bad cheeky titles with the word "cop", I beg all of you. There have been THIRTY YEARS of those.

I just finished this fantastic trilogy of 80s feminist sci-fi (I’d never heard about before going to my local bookstore!) that explores a future world where the 19th amendment has been repelled [then many wacky things happen in pure 80s sci-fi style]. A good reminder of how flimsy progress is..

www.technologyreview.com/2025/11/04/1... In @technologyreview.com, @davidkeith.bsky.social and I explain why, especially if you think solar geoengineering is worth exploring, you should be skeptical of for-profit attempts. We bounced around thoughts for a while, but it got more urgent obviously.

In an op-ed for TR, @davidkeith.bsky.social & @danvisioni.bsky.social voice deep concerns about Stardust & other for-profits racing into solar geoengineering — and asserting claims that, they argue, the science doesn't support.

For our department Halloween party, I went as scary Stratospheric Aerosol Injection (SAI) - mostly to tease @danvisioni.bsky.social

On October 6-9, the World Climate Research Programme Lighthouse Activity on Climate Intervention Research (www.wcrp-climate.org/ci-overview) and the Core Activity on Atmospheric Processes and their Role in Climate (APARC) co-hosted a Virtual Workshop Series on Stratospheric Aerosol Injection (SAI).

Ultimately, I agree I don’t expect much from founders (public & private). I prefer expecting much more from bottom-up efforts from within the community to be ethical and accountable, which is why we wrote the AGU guidelines.. www.agu.org/learn-about-...

In May, with UNEP+WMO we organized a consultive dialogue with countries & scientists that was a great success in bringing together multiple levels of concerns (www.unep.org/events/works... the report). It was challenging, and a huge effort, but one thing I didn’t feel at the end was “shame”.

I’ve never been shy nor ashamed of the fact that the core of my research is around SRM. I think there is merit in research: if we can show there are ways to ameliorate current and future climate change, we should know. If there aren’t, or if SRM could be used to make things worse, we should know.

I’ve never been shy nor ashamed of the fact that the core of my research is around SRM. I think there is merit in research: if we can show there are ways to ameliorate current and future climate change, we should know. If there aren’t, or if SRM could be used to make things worse, we should know.

I’m sure is just a coincidence, but the Syracuse Orchestra today is playing Beethoven’s Seventh, which premiered at a concert celebrating Napoleon’s defeat. He dedicated the Third to Napoleon as a champion of liberty, but ripped the dedication from the manuscript when he declared himself Emperor.

I just finished reading “The Terraformers” by @annaleen.bsky.social and it made me so happy I need to share it here. It is rare to find such forward-looking, powerful sci-fi that manages to be hopeful about humanity while not shying away from its problems.

Dakota Gruener and I have a new piece out in the new issue of @worksinprogress.bsky.social : worksinprogress.co/issue/sunscr...

Beautifully illustrated and clear write-up on SRM by @danvisioni.bsky.social and Dakota Gruener. worksinprogress.co/issue/sunscr...

Today we joined Natalie Mahowald, Lead Author of the IPCC 1.5SRE, to have a wide-ranging discussion on the topic of geoengineering, from the science to the governance challenges and ethical implications. Thanks to @cornelluniversity.bsky.social for organizing! www.youtube.com/watch?v=o15F...

Who would have guessed that putting together your own group of people to write an "assessment" with the specific goal from the beginning to come out with a specific set of conclusions, cherry-picking data, highlighting uncertainties to imply there is no understanding, ...

Out as preprint, we have some very interesting results looking at the radiative forcing impacts of the 2022 Hunga eruption. Based on the outcomes of the related OMIP, with many models from all over the world participating in this effort, we find a robust cooling signal from the Hunga volcanic plume.

Tomorrow is the start of my Climate Dynamics course. While I was incredibly excited to teach it before -I ❤️ this class- this year feels exciting in different ways: doesn’t matter who is in charge or what censorship they demand, physics’s physics. More motivated than ever to engage with my students!😎

Tomorrow is the start of my Climate Dynamics course. While I was incredibly excited to teach it before -I ❤️ this class- this year feels exciting in different ways: doesn’t matter who is in charge or what censorship they demand, physics’s physics. More motivated than ever to engage with my students!😎

Our paper exploring in depth the potential response of the Atlantic Meridional Circulation (AMOC) to Stratospheric Aerosol Injections led by Ewa Bednarz at NOAA CSL is now available online! Check out the paper here: agupubs.onlinelibrary.wiley.com/doi/10.1029/...

WG1, Chapter 9 reporting for duty 🫡 Very excited to participate in the next @ipcc.bsky.social Assessment Report, especially in a chapter with so many great colleagues and friends!

The @ipcc.bsky.social Seventh Assessment Report authors have been announced.

This thing we spread lies about is too controversial now and some people don’t like it, and it’s the scientists fault because of their lack of humility, so we’ll stop funding it completely. It’s just common sense!

The Data Foundation is fundraising for a new initiative that will coordinate efforts among nonprofits, experts & companies to modernize US greenhouse-gas measurements, striving to build on a Biden effort that Trump nullified on his first day in office.

The deadline for abstract submission is approaching!

The Cornell Atkinson Center is now accepting applications for our 2026 Postdoctoral Fellowships in Sustainability at Cornell Atkinson! Reach out if you’re interested & read more details below 👇 www.atkinson.cornell.edu/cornell-atki...

The Cornell Atkinson Center is now accepting applications for our 2026 Postdoctoral Fellowships in Sustainability at Cornell Atkinson! Reach out if you’re interested & read more details below 👇 www.atkinson.cornell.edu/cornell-atki...

Sorry but personally if a miniature horse woke me up from anesthesia by banging out nonsense on a miniature keyboard it would send me into a liminal space between life and death from which I would never return

🚨 Very, very big news. Today, a global coalition - including members of the IPCC, IPBES, and WHO expert advisors, as well as independent virologists, epidemiologists, and lawyers - started the process of creating an "IPCC for Pandemics." 🔓 www.thelancet.com/journals/lan... 🧵 Five things to know 👉

I don’t care if this was “the best” - it was incredibly entertaining and joyful, and a pleasure overall for sure - but it was definitely the Superman we needed, and also the one we collectively deserved after 7 months of putting up with cartoonishly evil shit.