I am calling for a complete and total boycott of the Mercator projection in all news stories about Greenland until every member of the American public has seen this

Damn.. Ripple made me cry on this one. Love the harp on Bird Song too. RIP Bobby. www.youtube.com/watch?v=4l_g...

RIP Bobby… youtu.be/4l_gUwdPrNY?...

We're thrilled to welcome Fraser King to our faculty as an assistant professor. Learn more in a brief Q&A with Fraser about his background, research, and what excites him about UW–Madison and AOS: www.aos.wisc.edu/news/q&a_fra...

I promised myself that I would finish the BUFR blog series before the new year. Not cutting it quite as close as my university assignments, but still, pretty close. The code was done a while ago, the writeup, not so much! Join me in one last descent into madness? www.stormscale.io/blog/so-I-am...

Students in the atmospheric and related sciences: are you looking for a summer internship? I've just updated my listing of summer internships for the 2026 application cycle. Most deadlines are coming up in January & February! #weather #climate #reu #research clarkevanswx.github.io/education/un...

Prescient...

“In short, the atomic ensemble time scale at our Boulder campus has failed due to a prolonged utility power outage. One impact is that the Boulder Internet Time Services no longer have an accurate time reference.” groups.google.com/a/list.nist....

Looking to check out the new AI GFS output? @pth1.bsky.social is making it available via the @uwmad-aos.bsky.social THREDDS Data Server! thredds.aos.wisc.edu/thredds/cata...

Wisconsin has a new 24-hour precipitation record: 14.55" This was recorded by a rain gauge in Milwaukee during the August flooding event and shatters the previous record of 11.72" that was measured on June 24, 1946. www.weather.gov/mkx/NewWisco...

For those at #agu25 #saveNCAR 12:15pm - Group Photo/Video at the "science strong" wall across from the Plenary Hall at the entrance to the convention center 1:30-5:30pm - drop in interviews at PJs Coffee in front of Hall C - look for the person with the "We ❤️ NCAR" sign. More info:

#AGU25 folks, there is a rapid- response town hall TODAY on the #NCAR dismantling at 1 pm, La Nouvelle Orleans ballroom C (per an AGU media advisory)

It’s simply not possible to overstate how important NCAR is to US and world science. We need to fight this with everything we’ve got.

Note: NCAR/UCAR websites will be offline most of the day today due to unrelated power issues.

NCAR and UCAR have released a statement. NSF has not provided any guidance to UCAR or NCAR leadership about this whole situation. news.ucar.edu/133054/ucar-...

Devastating and dangerous blow to the weather and climate community tonight, as 20,000 earth and space scientists meet at #AGU25. New @ucs.org statement from @carlonimbus.bsky.social on the Trump administration plans to dismantle @ncar-ucar.bsky.social: www.ucs.org/about/news/t...

Before the 1990s, plane crashes caused by microbursts used to kill planeloads of people fairly regularly. Dr. Ted Fujita and NCAR scientists figured out how to detect microbursts and warn pilots about them. Since then? Zero airliner crashes from microbursts.

I'm not sure most folks are aware of the immense magnitude of loss this would entail for the global weather and climate community, and beyond. NCAR has played a greater cumulative role in advancing weather prediction and atmospheric modeling than perhaps any other single entity in the world.

Key misunderstanding I want to get ahead of: NCAR isn't really a government agency like NIH or NSF. It's one of the largest NSF grants in history, and is given to a non-profit org called UCAR, whose job is to make NCAR exist (www.nsf.gov/awardsearch/...). That means the buck stops with NSF right now

NCAR is quite literally our global mothership. Everyone who works in climate and weather has passed through its doors and benefited from its incredible resources. Dismantling NCAR is like taking a sledgehammer to the keystone holding up our scientific understanding of the planet. Unbelievable.

A deeply dangerous — and blatantly retaliatory action against Colorado — by the Trump administration. NCAR is one of the most renowned scientific facilities in the WORLD — where scientists perform cutting-edge research everyday. We will fight this reckless directive with every legal tool we have.

Do you love to write code or teach others about data-centered Earth Systems Science? Interested in the interplay of science and data? The NSF Unidata Summer Internship program is looking for you! Apply by February 6, 2026 to work with us next summer: buff.ly/5nsLdRu

It's easy to be numb because it's par for the course nowadays, but repeatedly calling a reporter who asks a reasonable question "stupid" is conduct unbecoming for a small-town mayor, let alone the President of the United States. The press exists to play a watchdog role, not be a supplicant.

After many long months, I’m excited to announce: we’re hiring! GSL through CIRES is looking to hire a land-surface model developer. Come join us in developing the next generation of storm-scale NWP for NOAA & community! Closes 12/12, pls contact me w/ questions. jobs.colorado.edu/jobs/JobDeta...

Brief aurora display here on the east side of Madison, WI. Visible to naked eye in color but not as vivid as these photos

Trump just continually shooting our country in the face. This unwarranted (and likely illegal) destruction of Goddard is madness. It jeopardizes the next several decades of space exploration.

📢The Anemoi training-ready ERA5 dataset is now openly available! A ready-to-use, ML-optimised subset of ERA5 in cloud-friendly Zarr format, hosted by ECMWF and free under CC-BY-4.0. Read the AIFS blog: ➡️ www.ecmwf.int/en/about/med...

We're hitting the road with the State Climate Office! 🚗 To understand the local impacts of weather and climate in rural communities, we're planning a 3-part roadshow across the state. First stop, the Northwoods! 🌲 Learn more and register for free here: climatology.nelson.wisc.edu/roadshow/

Saw @neighbortunes.bsky.social and Kyle Hollingsworth band at High Noon Saloon in Madison, WI this past Friday night. Small crowd, but incredibly awesome show, highly encourage to go check out either band if they are in your area. Thanks again for playing Madison, had a fabulous time!

Please join us for Weather Watch at 12:15 PM CDT (1715 UTC) today, October 24, 2025, streaming online at go.wisc.edu/uwaos-wxwatch Remember that we are starting at 12:15 PM this semester because there is a class in the room right before Weather Watch. Hope to see you there!

Layoff notices at JPL are going out today. About 11% of the Lab, or 550 people, are being let go. I'm thinking of my friends and colleagues there, some of whom will still be employed after today and some of whom won't. I'm sorry you're having to deal with this.

Anticipating steep cuts to its budget, the National Center for Atmospheric Research, one of the world’s leading climate research centers, has laid off 29 employees and decided not to fill 21 vacant positions. https://scim.ag/46yaM9g

NEW! Dept of Education workers say their OOO replies were forcibly changed to blame Democrats for shutdown. When employees changed their responses back to the more neutral language, it changed yet again to the partisan response. @wired.com @leahfeiger.bsky.social www.wired.com/story/govern...

NEW—US Department of Education sent out standard Out of Office language to employees on Wednesday in light of shutdown. Later yesterday, workers tell me they found someone had updated their auto-responses without consent to a new one blaming Democrats. Version of original on left, updated on right:

Just a reminder that NWS is considered essential during a government shutdown. Meteorologists will still go to work, forecasts will still be made, watches and warnings will be issued, data will flow. We won’t be paid until the shutdown ends, but we’ll still protect life and property as always.

I recognize that significant impacts from #Imelda are still possible without a direct landfall, but it's curious that the @accuweather.com track makes landfall while the NHC forecast keeps the storm offshore. Your annual reminder to trust the experts at NHC & NWS.

Please join us for Weather Watch at 12:15 PM CDT (1715 UTC) today, September 19, 2025, streaming online at go.wisc.edu/uwaos-wxwatch Remember that we are starting at 12:15 PM this semester because there is a class in the room right before Weather Watch. Hope to see you there!

Please join us for Weather Watch at 12:15 PM CDT (1715 UTC) today, September 12, 2025, streaming online at go.wisc.edu/uwaos-wxwatch Remember that we are starting at 12:15 PM this semester because there is a class in the room right before Weather Watch. Hope to see you there!

My lab's been attacked by an anti-wind group and their lawyers. They threatened the science funding of my whole university, to shut me and my undergraduate research assistants up. NYT just covered it. 1/n www.nytimes.com/2025/08/25/c...

Please join us for the first Weather Watch of the semester at 12:15 PM CDT (1715 UTC) today streaming online at go.wisc.edu/uwaos-wxwatch - note that we are starting at 12:15 PM this semester because there is a class in the room right before Weather Watch. Hope to see you there!

Hadn't looked at upper level obs maps in a while. With our Weather Watch discussion starting tomorrow I took a quick look to make sure they were working right and whoa, did not realize how many obs are no longer there.. yeesh.. not great Bob.. whirlwind.aos.wisc.edu/~wxp/upperai...

Watch: 📺 🖥️ 💻 📱 @uwmad-aos.bsky.social Wisconsin State Climatology Office outreach specialist Amanda Schwabe considers how people experience the variability of daily and seasonal weather as climate change shifts broader patterns over time.

Anthony Bernal Ayala, PhD ’25, is part of NSF’s ICECHIP field campaign. Their work will produce the most extensive database of hailstones to date, linking the small-scale details contained within them to large-scale field observations, giving researchers new insights into the hailstone lifecycle.

New AMS statement outlines five foundational flaws that make the Department of Energy's Climate Synthesis Report "inconsistent with scientific principles and practices." Read the full statement: https://bit.ly/3UQRC82

NSF Unidata runs on community ideas, input, and energy! Meet the new folks joining our advisory committees this fall: buff.ly/2RF27zY

UW-Madison AOSS Rooftop Camera video from this past Saturday with two spectacular gust front / arc cloud passages, and lots of turbulence right behind them youtu.be/OfgKADhyET0

Finally pushed a full 1.0.0 (not release candidate) to PyPI and conda-forge. This also means that: mamba install sharplib conda install sharplib Work now (assuming you have conda-forge set as your primary channel). There is also now a Dask/Xarray/kerchunk example notebook for HRRR data!

The @ametsoc.org State of the Climate Report for 2024 is now published: doi.org/10.1175/2025... I am happy to have contributed again to this year's issue - see our section in 'The Arctic' chapter: doi.org/10.1175/BAMS... Another historic year for Earth's climate... 🚨

AOS professor Hannah Zanowski joined The Larry Meiller Show to talk about the role of oceans on Earth and other planets. Have a listen!