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David John Gagne II

@djgagnedos

Machine Learning Scientist at NSF NCAR in Boulder, CO. Interested in the linkages among AI, weather, climate, disasters, and impacts.

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Latest posts by David John Gagne II @djgagnedos

There might have been a case for CIG2 for hail in Illinois given the environment and warm front setup, but the guidance products are arguably not reliable enough for >2 inch hail to make that determination consistently.

11.03.2026 02:35 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Looks like the southern storm is producing an above-anvil cirrus plume.

10.03.2026 23:07 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Most detailed reporting I've seen on what might happen with NCAR. FYI, the president of Lynker is a former UCAR exec and was in the W. Bush administration.

10.03.2026 22:26 πŸ‘ 6 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

CCs cater pretty heavily to non-traditional students and usually don’t have strict entrance criteria to enroll except for high-demand professional programs. Just make sure credits transfer to 4-year schools in your area. Also look at continuing education options for picking up specific skills.

10.03.2026 04:18 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

The fear of being chastised for bringing up potential dangers in low signal to noise ratio environments is hard to overcome alone. It requires training and major culture changes to encourage sticking oneβ€˜s neck out when one sees something wrong.

10.03.2026 03:54 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Avoiding false alarms leads to hesitation and lost lead time around critical decision thresholds. It is visible in reliability diagrams for convective outlooks and hurricane RI too. The social penalty is higher for false alarms b/c more people are complaining afterward.

10.03.2026 03:43 πŸ‘ 1 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
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The Inspector General for NSF must launch an investigation into the Trump administration’s alleged attempt to sell-off parts of NCAR β€” immediately!

πŸ‘‡πŸ½πŸ‘‡πŸ½πŸ‘‡πŸ½

10.03.2026 00:11 πŸ‘ 195 πŸ” 87 πŸ’¬ 8 πŸ“Œ 4

Observational evidence for the use of a semi-slip lower boundary condition in idealized tornado models.

06.03.2026 23:54 πŸ‘ 11 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

Thank you!

05.03.2026 11:11 πŸ‘ 7 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Some exciting news to share: very soon, NOAA Research will be hiring new federal employees into science positions across the agency! A couple of notes:

1) They will only be open on USAJobs for seven days.
2) Multiple positions at different sites may be in one posting.

(1/2)

04.03.2026 23:55 πŸ‘ 69 πŸ” 36 πŸ’¬ 3 πŸ“Œ 1

According to the governor’s spokesperson, no action has been taken re: Peters. His office adds that Polis is not considering a pardon, but commutation remains on the table.

04.03.2026 04:18 πŸ‘ 39 πŸ” 9 πŸ’¬ 4 πŸ“Œ 4
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NSF officials break silence on how AI and quantum now drive agency grantmaking Leaders acknowledge White House role in controversial moves

The National Science Foundation is systematically being converted to the National AI and Quantum Research Foundation.

β€œI see it as the administration exerting political control over what has traditionally been NSF’s ability to fund the best science.”

27.02.2026 12:18 πŸ‘ 654 πŸ” 347 πŸ’¬ 21 πŸ“Œ 29

If I wanted to know what ChatGPT thought I'd fucking well ask ChatGPT!

I'm asking YOU because you're a human and you have experience!

26.02.2026 20:37 πŸ‘ 117 πŸ” 13 πŸ’¬ 3 πŸ“Œ 3

S.3926, the Weather Research and Forecasting Innovation Reauthorization Act of 2026, will be marked up in committee next week. It’s a bipartisan act that should be able to pass the Senate without much issue. A comprehensive summary is available below. (1/2)

www.commerce.senate.gov/2026/2/cantw...

26.02.2026 05:23 πŸ‘ 14 πŸ” 9 πŸ’¬ 2 πŸ“Œ 3

Rust is still growing in popularity but does tend to be used on the backend and is more of a C/C++ replacement rather than something you would use as the high level language for data analysis.

24.02.2026 04:59 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
A still satellite image of the blizzard of 2026 in the Northeast United States. This image contains the GeoColor product from the GOES-19 weather satellite from the evening of 2026-02-23.

A still satellite image of the blizzard of 2026 in the Northeast United States. This image contains the GeoColor product from the GOES-19 weather satellite from the evening of 2026-02-23.

A view we will not soon forget.

The Blizzard of 2026.

24.02.2026 03:03 πŸ‘ 455 πŸ” 116 πŸ’¬ 4 πŸ“Œ 14

My team has a postdoc working on this so that we can benchmark the different coding LLMs and hopefully produce some useful code. A lot of interest in porting to Jax although I am also curious about more torch physics since our MLWP code is in torch and it has better Mac support.

23.02.2026 16:01 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I could see Julia being a good agentic AI language just from being more token efficient by not having so many imports for array operations. It’s also matured a lot from groups like Clima probing performance limits and fixing bugs.

23.02.2026 15:57 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

That’s because all the really spicy software drama happens in person. Lots of debate about what to do with Fortran model codes right now among the C++, Python, Julia, and modern Fortran factions.

23.02.2026 15:00 πŸ‘ 6 πŸ” 0 πŸ’¬ 4 πŸ“Œ 0
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Research is leadership, and code can help (but only in the right places) Code was never the blocker in delivering customer value β€” and the easier writing code becomes, the more it distracts from the work we must do to unblock productivity.

You often hear "software development is changing, and we must adapt" because of Claude Code.

But for my entire career, code has been the *easiest* part of making shit people care about, and we still haven't adapted.

The easier coding becomes, the less often we ask "do users actually NEED this?"

22.02.2026 20:54 πŸ‘ 271 πŸ” 55 πŸ’¬ 10 πŸ“Œ 8
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UW offered opportunity to take over operations of Cheyenne supercomputer facility CHEYENNE β€” The National Science Foundation announced Feb. 12 that management and operations of the National Center for Atmospheric Research-Wyoming Supercomputing Center (NCAR-WSC) are expected to tra...

If you’re wondering how the NCAR breakup is playing out, a key update: www.wyomingnews.com/news/local_n...

20.02.2026 15:47 πŸ‘ 4 πŸ” 1 πŸ’¬ 1 πŸ“Œ 2
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Relevant news to people who depend on government science funding and not just health. www.nytimes.com/2026/02/18/u...

18.02.2026 22:18 πŸ‘ 0 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
UCAR Software Engineering Assembly - Conference The public facing site for the UCAR SEA featuring news, event information, and best practices.

NCAR hosts the Improving Scientific Software Conference in April. Abstract submission deadline just passed but you’re welcome to attend. sea.ucar.edu/iss/2026/

07.02.2026 07:26 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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All the Denver airport trains broke down so everyone had to walk across the bridge and somehow go from there. Looks like trains are starting to run again but there’s a big line down the escalators.

01.02.2026 23:00 πŸ‘ 2 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

The I-70 midwest corridor (Indy, Columbus, Cincinnati, Pittsburgh) all have more developed downtowns and can handle winter weather and sometimes can be more mild in January.

31.01.2026 17:01 πŸ‘ 2 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
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Lots of satellite mosaics in Houston at #AMS2026 but only one made of real tiles.

30.01.2026 01:47 πŸ‘ 10 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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I'm providing an update on CREDIT at 4:30 PM today in 330A at #AMS2026. Here's a taste of some of the changing views on ML weather prediction I will be providing. (Thanks @plustssn.autumnsky.us for the last minute bug fix!)

28.01.2026 21:39 πŸ‘ 21 πŸ” 3 πŸ’¬ 2 πŸ“Œ 1

Bridging Physics & AI in Climate Modeling πŸŒπŸ€–

Introducing JCM v1.0: A fully differentiable, intermediate-complexity atmospheric model built in Python/JAX.

Training hybrid models is hard because legacy code lacks gradients. JCM solves this.

26.01.2026 22:30 πŸ‘ 23 πŸ” 8 πŸ’¬ 1 πŸ“Œ 2
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harcx Verify .bib file citations against academic databases (Semantic Scholar, DBLP, Open Library)

My UCSB colleague Gurusha Juneja wrote a python tool to auto-check your bibtex for hallucinated citations: pypi.org/project/harcx/

It supports papers, books, and
URLs.

Usage:
pip install harcx
harcx references.bib

26.01.2026 02:01 πŸ‘ 73 πŸ” 19 πŸ’¬ 1 πŸ“Œ 5

When flying in winter, it is reassuring to have a pilot with an upper Midwest accent. See y’all in Houston!

25.01.2026 16:53 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0