Jessica Tierney
@leafwax.bsky.social
Climate scientist living in the Sonoran Desert. Analyzer of leaf waxes to learn about past climate change. Professor at the University of Arizona. I also like birds, nature, pets🦉🌿🐕 | Opinions are mine, not those of my employer
Benito is a threat b/c he makes art so alluring and enjoyable you want to understand everything about it and then you end up learning about sugar and slavery and colonialism and the Taínos and Hawaii and then you probably have some thoughts of your own, and that's why art is powerful and dangerous
Really excited to see this paper out!! Led by @vtcoop.bsky.social we show that if you use cold and warm paleoclimates together, you can reduce uncertainty in Earth's climate sensitivity by quantifying the pattern effect and more precisely constrain future climate change www.pnas.org/doi/10.1073/...
Paleoclimate pattern effects help constrain climate sensitivity and 21st-century warming | PNAS
Paleoclimates provide examples of past climate change that inform estimates of modern warming from greenhouse-gas emissions, known as Earth’s clima...
pnas.org
Who I wonder is an "appropriate operator" for the Trump administration? 🤔 Will we be losing Derecho core hours to an AI company? 🤦♀️ #SaveNCAR
The latest unhinged threat from the Trump administration would destroy the best climate modeling center in the world. It would also be a blow to US researchers (including me) who depend on NCAR's modeling expertise and educational training programs for students. #SaveNCAR www.cnn.com/2025/12/17/c...
The Trump admin is closing a critical climate research center. Officials believe it’s really trying to punish a governor | CNN
The Trump administration announced plans Tuesday to shut down the National Center for Atmospheric Research, an organization responsible for improved weather models to tools that aid hurricane safety. ...
cnn.com
I am currently seeking a Lab Manager for our Organic Geochemistry Lab at the University of Arizona! Full time position with benefits. If you have a chemistry/biology/geology degree and like fixing things and working with students, this position could be for you! arizona.csod.com/ux/ats/caree...
Laboratory Coordinator I - Geosciences
Maintenance and repair of the Organic Geochemistry Laboratory equipment, including but not limited to gas chromatographs, liquid chromatographs & ...
arizona.csod.com
The special issue @quantamagazine.bsky.social on Climate Science just dropped and I know what my weekend readings is gonna be 👍🏻 www.quantamagazine.org/how-we-came-...
How We Came To Know Earth | Quanta Magazine
Climate science is the most significant scientific collaboration in history. This series from Quanta Magazine guides you through basic climate science — from quantum effects to ancient hothouses, from...
quantamagazine.org
I do love Reddit for so many reasons. Thanks for accepting me bros!
I stand by my offer to appear on Joe Rogan and set the record straight about our half-billion-year temperature reconstruction www.theguardian.com/environment/...
Joe Rogan claims study shows Earth cooling – but report’s authors say he’s wrong
Scientists say ‘old-school denier nonsense’ isn’t helpful as podcaster repeatedly airs false claim on his show
theguardian.com
A proposed Amazon data center in Tucson (“Project Blue”, FFS) that would have sapped power and water from the city has been REJECTED thanks to amazing community solidarity. The people of the desert have spoken and won ✊🌵🏜️
The Tucson city council unanimously rejected the Project Blue data center today. That comes after weeks of dogged organizing plus our little team @azluminaria.org going hard on helping Tucson understand who was behind this project and its impact on our community azluminaria.org/2025/08/06/t...
This @wired.com article is extremely timely for those of us in Tucson, Arizona, as we face the possibility of Amazon Web Services building a huge data center at our outskirts. Energy and water use for AI data centers are non-trivial. Read my thread below if you want to hear about our local story ⬇️
AI this, AI that, what about how much energy AI actually uses? “It blows my mind that you can buy a car and know how many miles per gallon it consumes, yet we use all these AI tools every day and we have absolutely no efficiency metrics, emissions factors, nothing." From the experts:
Update on the NOAA Fellows situation: as of late last week the furlough has been lifted (phew!). However, there are no new Fellows this year, and we still don't know the future of this program.
As of today, all current NOAA Climate and Global Change postdoctoral fellows have been furloughed due to the Dept of Commerce not releasing the funding for the program. In addition no new Fellows were awarded this year. cpaess.ucar.edu/cgc
✨Paper #2 has just been published @weareagc.bsky.social ✨ And it is about hopanoids!! Thank you @climategordon.bsky.social for trusting a brand new journal with your research. AGC is 💎 open access: free to publish and free to read 🙌 Geochemists, come publish with us! journals.uu.se/AGC/article/...
Hopanoid distributions differ in mineral soils and peat: a re-evaluation of hopane-based pH proxies | Advances in Geochemistry and Cosmochemistry
Advances in Geochemistry and Cosmochemistry, ISSN 2977-1994 | CC BY 4.0
journals.uu.se
The Trump administration's proposed budget would slash NOAA's climate research funds. It still has to pass Congress, but it's already affecting scientists. A program supporting promising new climate scientists furloughed its current cohort and canceled 2025 awards. www.nytimes.com/2025/07/09/c...
Recipients of a U.S. Climate Science Fellowship Are Put on Unpaid Leave
nytimes.com
Reporting on the NOAA Fellow furlough, from the @nytimes.com www.nytimes.com/2025/07/09/c...
Recipients of a U.S. Climate Science Fellowship Are Put on Unpaid Leave
nytimes.com
As of today, all current NOAA Climate and Global Change postdoctoral fellows have been furloughed due to the Dept of Commerce not releasing the funding for the program. In addition no new Fellows were awarded this year. cpaess.ucar.edu/cgc
NOAA Climate & Global Change (C&GC) Postdoctoral Program | Cooperative Programs for the Advancement of Earth System ScienceNOAA Climate & Global Change (C&GC) Postdoctoral Program | Cooperative Progra...
cpaess.ucar.edu
So cool!! The journey started in 2018, I think the photo on the left was 2021 (?) and now the Judd curve is on the wall in the Smithsonian 👍🏻
How it started, How it’s going (Judd et al. 2024 now in the Smithsonian, @leafwax.bsky.social !) www.science.org/doi/10.1126/...
The fact that "climate is always changing" should not bring us comfort! @hausfath.bsky.social and I break down common climate denier arguments on @pbs.org Weathered www.youtube.com/watch?v=iP2l... Feat. temp and CO2 reconstructions from our lab and @mudwaterclimate.bsky.social
Did Climate Skeptics Get THIS Right?!
YouTube video by PBS Terra
youtube.com
Yesterday, the NIH R35 “Outstanding Investigator” grant to fund scientists in my lab studying antibiotic resistance was terminated for reasons not related to the content of the science, or any actions taken by me or members of my lab
Useful post here on things you can do to communicate the importance of science to your representatives.
Upset about federal funding cuts in the US? Want some ideas of what to do? I wrote a long-ish blog post about it here ecoevoevoeco.blogspot.com summarizing things I learned meeting with Senate & House aides this week with the @aibsbiology.bsky.social Congressional Visits Day event.
Hard to post about ‘normal’ things, but - we had an amazing field trip out to CA with ugrads to learn and practice oceanography this Spring ❤️🌊 when things are dark I get a boost from teaching great students!
We've quickly moved from being the spokesperson for a protest movement to being arrested at a protest to publishing a critical op-ed as the criteria for summary deportation. A slippery slope for free speech indeed. www.nytimes.com/2025...
Rumeysa Ozturk, a Tufts Student, Is Detained by ICE
The university was told that the student’s visa had been terminated, its president said in a late-night email to students and faculty members.
nytimes.com
Grijalva was my representative and a legend- defender of the environment, indigenous groups in southern AZ and sensible border policy. Going to be missed 💔 RIP
Spitfire Raul Grijalva, a congressman from Arizona for more than 40 years, advocate for public lands and fighter against climate change, has died at age 77 in a major loss for the West. 🧵👇
"It does not matter if you approve of Khalil’s views. ... If the state can deprive an individual of his freedom just because of his politics, which is what appears to have happened here, then no one is safe." www.theatlantic.com/ideas/archiv...
Mahmoud Khalil’s Detention Is a Trial Run
The pro-Palestine student was arrested without due process for exercising his right to free speech. He will not be the last.
theatlantic.com