(Planetary) Climate Scientist. Interested in interactions of clouds, circulation, radiation, and climate.
Currently learning about stratospheric aerosols and composition feedbacks for climate physics @IGEO-CSIC
Jakob Snoeink
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If you’re not aware of it, please consider watching this livestream + taking action to protect the outstanding science and institutions such as NSF NCAR that are so valuable to society:
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This image of home just came down from the Artemis II crew.
Taken after their translunar injection burn, there are aurorae at top right and lower left, and zodiacal light at lower right.
Credit: NASA/Reid Wiseman
⚒️ Article: Stratospheric cooling and amplification of radiative forcing with rising carbon dioxide
@lamont.columbia.edu
www.nature.com/articles/s41...
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Exoplanet atmosphere characterization is built on a foundation of lab data and chemistry. We need more reaction rates, cross sections, & line lists, at a broader range of conditions than the Solar System. Got together with Earth/planetary scientists to comment on this: www.nature.com/articles/d41...
Paul Byrne
Higher carbon dioxide levels widen the part of the heat spectrum that can emit energy to space, cooling the stratosphere and strengthening the warming effect of this gas, according to idealized spectr...
@kapteynastro.bsky.social of @rug.nl invites applications for in total 7 PhD and 4 ERC-funded postdoc positions in our annual call. ⭐🔭
PhD positions:
aas.org/jobregister/...
Postdoctoral positions:
aas.org/jobregister/...
#exoplanet #astronomy #geoscience 🧪🔭⭐
[Image credit: Mark A. Garlick.]
The Livestream is in its second of 2 days, it has been amazing! Tune in to a continuous science-a-thon with great talks by brilliant scientists, hosted by other brilliant scientists. Plenty of audience Q&A. It's a really unique thing, actually. It'll be a document for history books.
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Nature Geoscience
Starting 2026 with a bang, our paper is published! 🎉🎉🎉
In it, we explored how polar amplification depends on the underlying climate state, with implications for understanding the past and future evolution of polar climate change!
Enjoy! :)
agupubs.onlinelibrary.wiley.com/doi/10.1029/2025GL118423
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Stronger links between researchers who work on Earth’s and other planets’ atmospheres, and between the experimental, modelling and observational communities, will help to interpret the astronomical da...
www.nature.com
🚨 The Weather and Climate Livestream is back, June 1st - 3rd 2026!! We're streaming 50 hours for our future in the face of a new round of proposed budget cuts and attacks on science. Want to speak at the event? wclivestream.com/volunteer/
Andrew Williams
Tim Lichtenberg
Andrew Williams
The Weather & Climate Livestream
Adam Sobel
We're starting in 20 minutes! Our opening lineup includes:
@adamsobel.bsky.social
Jen Kay (UC Boulder)
@zacklabe.com
@ametsoc.org
@drjeffmasters.bsky.social
@solilyquy.bsky.social
Nadir Jeevanjee (NOAA GFDL)
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The Weather & Climate Livestream
🚨 The Weather and Climate Livestream is back, June 1st - 3rd 2026!! We're streaming 50 hours for our future in the face of a new round of proposed budget cuts and attacks on science. Want to speak at the event? wclivestream.com/volunteer/
The Weather & Climate Livestream
🚨 We begin our 50-hour broadcast today at 4pm 🚨
It's a showcase of incredible people and their phenomenal work- a celebration of the scientific community 🧪, defined broadly
Use this link to subscribe to our YouTube channel and you'll get notified when we're live: wclivestream.com/watch
The Weather & Climate Livestream
The Weather & Climate Livestream
Under climate change, the polar regions warm *faster* than the rest of the world ("polar amplification", PA).
But, is this always the case?
In this preprint (with Tim Merlis) we studied the 'state-dependence' of PA—feedback welcomed! :)
andrewilwilliams.github.io/papers/pa_widerange_main.pdf
