Flavio Lehner
LightNews LightNews
banner
climateflavors.bsky.social
Flavio Lehner
@climateflavors.bsky.social
2K followers 470 following 190 posts

Climate Scientist
Assistant Professor @ Cornell University
Chief Climate Scientist @ Polar Bears International
https://flaviolehner.eas.cornell.edu/

Videos
Environmental science 55%
Geography 18%
Posts Replies Media Videos

Reposted by Flavio Lehner, Brian Medeiros

wclivestream.bsky.social
The Weather & Climate Livestream @wclivestream.bsky.social · 2d
Our guide to approaching (and starting!) conversations about NCAR and the importance of weather and climate science. #SaveNCAR

Reposted by Adam H. Sobel, Flavio Lehner, Brian Medeiros , and 1 more

clarkegeagan.bsky.social
Clarke Geagan @clarkegeagan.bsky.social · 3d
There aren't a lot of resources for what people can do to prevent the destruction of NCAR, so I made this:

#NCAR #climate #climatescience #weather #meteorology #activism #myresources

Reposted by Adam H. Sobel, Flavio Lehner

neguse.house.gov
Rep. Joe Neguse @neguse.house.gov · 5d
From wildfire warnings to flood forecasts, NCAR's research impacts everyone in America.

President Trump's attempt to dismantle it for political vengeance is beyond reckless.

We will fight against this dangerous scheme every step of the way.

Reposted by Ankur R. Desai, Kevin J. Anchukaitis, Flavio Lehner

kerrycook.bsky.social
Kerry Cook @kerrycook.bsky.social · 5d
From @AGU.org: Senators are working on legislation to save NCAR, but we need extra support for these 8 states. Your Senators in Alabama, Alaska, Florida, Louisiana, Mississippi, North Carolina, Texas, and Wyoming need to hear from you.

Reposted by Flavio Lehner, Jonathan M. Gilligan, Christoph Bertram

costasamaras.com
Costa Samaras @costasamaras.com · 6d
On #AGVTV at #AGU25, Dr. Melissa Kenney and I talked about the opportunity for the entire scientific community to contribute towards climate assessment research. Submit your papers at USclimatecollection.org. youtu.be/7Kb-hfwIUxQ?...
Introducing the U.S. Climate Collection: Connecting Climate Science for a Brighter Future
YouTube video by WebsEdgeScience
youtu.be

climateflavors.bsky.social
Flavio Lehner @climateflavors.bsky.social · 7d
I spoke too soon - OT!

climateflavors.bsky.social
Flavio Lehner @climateflavors.bsky.social · 7d
It was entertaining for sure, maybe more so than the game

Reposted by A. E. Dessler, Wim Thiery, Baylor Fox‐Kemper , and 1 more

climateflavors.bsky.social
Flavio Lehner @climateflavors.bsky.social · 8d
I came to the US over 10 years ago for a postdoc at NCAR. It changed my life and supercharged my ability to do science. NCAR's unique community nature makes it a global node in atmospheric and climate research. It's really not possible to overstate its value for science and society.

Reposted by Katharine Hayhoe, Elizabeth Saunders, Rebecca Solnit , and 67 more

usatoday.com
USA TODAY @usatoday.com · 9d
Exclusive: The Trump administration is moving to dismantle the National Center for Atmospheric Research in Colorado, according to a senior White House official, taking aim at one of the world's leading climate research labs.
Trump moves to dismantle major US climate research center in Colorado
The Trump administration is breaking up the National Center for Atmospheric Research, taking aim at one of the world's leading climate research labs.
bit.ly

Reposted by Flavio Lehner

polarbearsinternational.org
Polar Bears International @polarbearsinternational.org · 10d
For 40+ years, the U.S. gov has conducted highly respected & productive polar bear research. At a time when many in power question the value of gov-supported scientific research, some involved express concern about what is at stake. Learn why gov-led polar bear research is vital. pbears.org/4a1eRVE
The Impact of Government Polar Bear Programs: United States | Polar Bears International
At a time when too many in power refuse to acknowledge the reality of climate change and question the value of government-supported scientific research, some of those who have been intimately involved...
polarbearsinternational.org

Reposted by Flavio Lehner

zacklabe.com
Zack Labe @zacklabe.com · 12d
Join us! In a few days, @climatecentral.org will be launching a new webinar series on the state of our climate! I’ll provide monthly overviews of current global and U.S. conditions, along with special guests, featured topics, and written reports.

➡️ Sign up at www.climatecentral.org/climate-brie...
Graphic showing weekly concentration of CO2 in parts per million for the years from 2020 to 2025. We are currently setting new record high levels.

climateflavors.bsky.social
Flavio Lehner @climateflavors.bsky.social · 13d
I do! Amazing tradition.

Reposted by A. E. Dessler, Aiko Voigt

climateflavors.bsky.social
Flavio Lehner @climateflavors.bsky.social · 13d
I was the 92nd viewer. This should have 92M views.

Reposted by Peter A. Stott, A. E. Dessler, Peter Thorne , and 4 more

climateofgavin.bsky.social
Gavin Schmidt @climateofgavin.bsky.social · 13d
This is the only parody song about geophysical fluid dynamics you’ll ever need:

urldefense.com/v3/__https:/...
Call Me Charney: A GFD Parody
This was so fun to make!! #lamontdoherty #lamont #atmosphere #science #charney #GFS #vallis #geostrophic #quasigeostrophic #hydrostatic #rossby
urldefense.com

Reposted by Flavio Lehner, Jonathan A. Foley, Richard Waite

hausfath.bsky.social
Zeke Hausfather @hausfath.bsky.social · 14d
In a new article over at Carbon Brief, I explore why the past three years – 2023, 2024, and 2025 – have been exceptionally warm. The main culprits turn out to be a combination of El Nino and internal variability, declining aerosols, and a strong solar cycle: www.carbonbrief.org/...

Reposted by Gavin A. Schmidt, Flavio Lehner, Paulo Ceppi , and 1 more

andrewilwilliams.bsky.social
Andrew Williams @andrewilwilliams.bsky.social · 16d
📢Submit to our EGU session!📢

We are organizing a session at EGU 2026 in Vienna, with a focus on climate sensitivity, radiative feedbacks and the pattern effect!

If you work on anything related to climate sensitivity, we'd love to have you! 🥳🥳🥳 Submit soon! :)

Reposted by Flavio Lehner, Jussi T. Eronen

weatherwest.bsky.social
Daniel Swain @weatherwest.bsky.social · 17d
Additionally, it appears that all of EPA's previously extensive "indicators of climate change" pages have been scrubbed entirely. The pages no longer exist; there are numerous dead links on the current/live EPA site, and no indication they have been moved to a new URL.
Snapshot of EPA's "indicators of climate change" page, which no longer exists.

Reposted by Flavio Lehner

climatologist49.bsky.social
Climatologist49 @climatologist49.bsky.social · 21d
Fall (Sep-Nov) 2025 was the warmest on record for the combined U.S and Canada region.

Reposted by Flavio Lehner

heatmap.news
Heatmap News @heatmap.news · 22d
New on SHIFT KEY:

2025 has been a wild and wacky year for climate policy. What did @robinsonmeyer.bsky.social and @jessedjenkins.com get right about what to expect — and what did they get wrong?

Listen to the full episode here or wherever you get your podcasts:

podcasts.apple.com/us/podcast/s...
The Biggest Lessons of a Not-So-Great Year for Climate Policy
Podcast Episode · Shift Key with Robinson Meyer and Jesse Jenkins · 12/03/2025 · 1h 1m
podcasts.apple.com

climateflavors.bsky.social
Flavio Lehner @climateflavors.bsky.social · 23d
Cc @worldbollardassoc.bsky.social

climateflavors.bsky.social
Flavio Lehner @climateflavors.bsky.social · 23d
Hudson Bay is finally starting to freeze over in earnest.

2025 will likely go down as the 2nd-longest ice-free period for the Western Hudson Bay polar bear population, continuing the long-term trend (now >1 month longer than in the 1980s).

climateflavors.bsky.social
Flavio Lehner @climateflavors.bsky.social · 24d
Great blog post and visuals! Are you adding this combined "Eastern Canada Sea Ice" region to the regular plots on your website? (sorry if I missed it) Would love to use an up-to-date version in a presentation this Friday. No worries if not.

Reposted by Flavio Lehner

vsrikrish.bsky.social
Vivek Srikrishnan @vsrikrish.bsky.social · 25d
Kelly's point is why I think the merits of Zillow removing climate risk scores (www.nytimes.com/2025/11/30/c...) is fairly nuanced. To make it clear: Zillow clearly did not do this for the right reasons, and the realty and developer lobbies have long been opponents of better climate information.

Reposted by Valerie M. Delmotte, Sonia I. Seneviratne, Stelios Katsanevakis , and 4 more

zacklabe.com
Zack Labe @zacklabe.com · 26d
October 2025 was the warmest October on record for the #Arctic. Arctic sea-ice extent is currently the lowest on record for late November. My newest 'climate viz of the month' summarizes some of this latest data: zacklabe.com/climate-viz-...

#ClimateChange #SciComm #OpenScience #OpenData #DataViz
Climate Viz of the Month
October 2025 Hi everyone! Instead of designing a new special feature visualization, this next ‘climate viz of the month’ blog will focus on briefly summarizing the recent extremes in th…
zacklabe.com

Reposted by Benjamin I. Cook, Flavio Lehner

mathewabarlow.bsky.social
Mathew Barlow @mathewabarlow.bsky.social · Nov 24
Tehran is having an historic drought due to a combination of factors, including climate change.

The ocean is not helping.

1/3
A chart showing fall precipitation in Tehran from 1950-present, based on ERA5 data. A chart showing precipitation in Tehran for 1 September-18 Sep 2025 compared to average. Shown in terms of accumulated precipitation.

Reposted by Katharine Hayhoe, Garry Peterson, Du Toit , and 2 more

voosen.me
Paul Voosen @voosen.me · Nov 18
My latest for @science.org: A remarkable set of high-resolution climate model runs, computed over 900 (!) days of supercomputing time, are revealing how warming-induced changes to Earth's wind patterns due can prime huge spikes in extreme rainfall.

But the MESACLIP runs also do much more than that.
High-resolution climate model forecasts a wet, turbulent future
With details as fine as short-term weather forecasts, model achieves newfound accuracy
www.science.org

Reposted by Flavio Lehner

science.org
Science Magazine @science.org · Nov 11
A new record of Arctic sea-ice coverage—informed by the slow and steady sedimentation of cosmic dust on the sea floor—reveals that ancient ice waxed and waned with atmospheric warming, not ocean heat, over the last 300,000 years.

Learn more in Science: https://scim.ag/4hRUjks
Cosmic dust reveals dynamic shifts in central Arctic sea-ice coverage over the past 30,000 years
Arctic sea-ice loss affects biological productivity, sustenance in coastal communities, and geopolitics. Forecasting these impacts requires mechanistic understanding of how Arctic sea ice responds to ...
scim.ag

climateflavors.bsky.social
Flavio Lehner @climateflavors.bsky.social · Nov 11
Cc @sillin.bsky.social
wisc-satellite.bsky.social Scott Bachmeier @wisc-satellite.bsky.social · Nov 10
The 50th Anniversary of the Wreck of the Edmund Fitzgerald: A New Perspective on an Old Storm: cimss.ssec.wisc.edu/satellite-bl...

Reposted by Katharine Hayhoe, Ben Bond‐Lamberty, Flavio Lehner

wisc-satellite.bsky.social
Scott Bachmeier @wisc-satellite.bsky.social · Nov 10
The 50th Anniversary of the Wreck of the Edmund Fitzgerald: A New Perspective on an Old Storm: cimss.ssec.wisc.edu/satellite-bl...

Reposted by Flavio Lehner

natetwnclimate.bsky.social
Nathan Howes TWN @natetwnclimate.bsky.social · Nov 2
As part of #PolarBearWeek (Nov. 2-8), a new AI-based system from @polarbearsinternational.org, tested in the Far North for several years, officially launched to alert locales of animals nearby to deter human-wildlife conflicts. @vfennalvarado.bsky.social www.theweathernetwork.com/en/news/natu...
Bear-dar looks to prevent human-wildlife conflicts in the North - The Weather Network
As part of Polar Bear Week (Nov. 2-8), a new artificial intelligence-based system, which has been in a testing phase in the Far North for several years, has been officially launched to alert communiti...
www.theweathernetwork.com