Casey Williams, PhD
@scificlimateguy.bsky.social
AI Psychologist | OpenAI Red Teamer | NSF ERC EARTH Industry Liaison Officer| Educational Psychologist | Researcher | Scientist | Consultant | Engineering Workforce Development
https://soundcloud.com/casey-williams-722723860
https://soundcloud.com/casey-williams-722723860
Reposted by Casey Williams, PhD
Coldest air on Earth today is in the US with temps up to 40 degrees below normal in the Midwest/ Great Lakes. Actual lows are as low as -20F there.
Cold US is due to widespread relative warmth in the Arctic, with record low Arctic Sea Ice extent. This “warmth” displaces the polar cold pool south.
Cold US is due to widespread relative warmth in the Arctic, with record low Arctic Sea Ice extent. This “warmth” displaces the polar cold pool south.
December 4, 2025 at 1:15 PM
Coldest air on Earth today is in the US with temps up to 40 degrees below normal in the Midwest/ Great Lakes. Actual lows are as low as -20F there.
Cold US is due to widespread relative warmth in the Arctic, with record low Arctic Sea Ice extent. This “warmth” displaces the polar cold pool south.
Cold US is due to widespread relative warmth in the Arctic, with record low Arctic Sea Ice extent. This “warmth” displaces the polar cold pool south.
Reposted by Casey Williams, PhD
Was there any coverage of the recent record warmth in both the Arctic and Antarctic? Multiple global datasets now confirm these records, and I think it's really quite striking.
Here's some very quick plots showing NOAAGlobalTempv6 data from October too. And see my earlier posts.
Here's some very quick plots showing NOAAGlobalTempv6 data from October too. And see my earlier posts.
November 22, 2025 at 2:20 AM
Was there any coverage of the recent record warmth in both the Arctic and Antarctic? Multiple global datasets now confirm these records, and I think it's really quite striking.
Here's some very quick plots showing NOAAGlobalTempv6 data from October too. And see my earlier posts.
Here's some very quick plots showing NOAAGlobalTempv6 data from October too. And see my earlier posts.
Reposted by Casey Williams, PhD
Here's a closer look around Svalbard from last month in the #Arctic, where nearly all areas recorded temperatures more than 5°C warmer than the 1981-2010 average.
Data from doi.org/10.24381/cds...
Data from doi.org/10.24381/cds...
November 20, 2025 at 12:26 PM
Here's a closer look around Svalbard from last month in the #Arctic, where nearly all areas recorded temperatures more than 5°C warmer than the 1981-2010 average.
Data from doi.org/10.24381/cds...
Data from doi.org/10.24381/cds...
Selling shovels in a land of caliche
For the fourth quarter Nvidia projects revenue of $65 billion plus or minus 2%. Wall Street was expecting revenue of $62 billion.
finance.yahoo.com/news/nvidia-...
finance.yahoo.com/news/nvidia-...
November 20, 2025 at 5:20 AM
Selling shovels in a land of caliche
Reposted by Casey Williams, PhD
This is how our forecast Polar Vortex Breakdown - Sudden Stratospheric Warming - plays out over the next 2 weeks ~20 miles aloft, as per the GFS model. This top and bottom comparison is a good visual on how breakdown occurs…
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November 18, 2025 at 12:59 PM
This is how our forecast Polar Vortex Breakdown - Sudden Stratospheric Warming - plays out over the next 2 weeks ~20 miles aloft, as per the GFS model. This top and bottom comparison is a good visual on how breakdown occurs…
1/
1/
Reposted by Casey Williams, PhD
While the weather world is focused on the expected big pattern shift and possible Arctic Outbreak after the Thanksgiving’s Turkey 🦃 deep fry, the nation’s middle is frying right now! Summery today at 25 degrees above normal, and 40 record highs!Dozens more through week’s end… (records via CoolWx)
November 18, 2025 at 10:59 PM
While the weather world is focused on the expected big pattern shift and possible Arctic Outbreak after the Thanksgiving’s Turkey 🦃 deep fry, the nation’s middle is frying right now! Summery today at 25 degrees above normal, and 40 record highs!Dozens more through week’s end… (records via CoolWx)
Reposted by Casey Williams, PhD
Get ready to rock and roll!
A Sudden Stratospheric Warming is on the way. In about two weeks, temperatures 12 miles up over Canada and Greenland are forecast to spike by 50°F or more. That’s a shockwave in the stratosphere — a rapid disruption of the polar vortex high above the Arctic… 1/
A Sudden Stratospheric Warming is on the way. In about two weeks, temperatures 12 miles up over Canada and Greenland are forecast to spike by 50°F or more. That’s a shockwave in the stratosphere — a rapid disruption of the polar vortex high above the Arctic… 1/
November 13, 2025 at 2:05 PM
Get ready to rock and roll!
A Sudden Stratospheric Warming is on the way. In about two weeks, temperatures 12 miles up over Canada and Greenland are forecast to spike by 50°F or more. That’s a shockwave in the stratosphere — a rapid disruption of the polar vortex high above the Arctic… 1/
A Sudden Stratospheric Warming is on the way. In about two weeks, temperatures 12 miles up over Canada and Greenland are forecast to spike by 50°F or more. That’s a shockwave in the stratosphere — a rapid disruption of the polar vortex high above the Arctic… 1/
I was definitely more excited than these oxygen and nitrogen molecules. First time to see it! #Auroraborealis #lfk
November 12, 2025 at 4:09 AM
I was definitely more excited than these oxygen and nitrogen molecules. First time to see it! #Auroraborealis #lfk
Reposted by Casey Williams, PhD
Record (or near record) dry grass/ soil moisture in North/ NW FL.
In the future this will become more common. Not for lack of rain. Instead due to warmer - more thirsty air - stripping the ground of moisture. In decades climate projections show the air could be 50% more thirsty over FL!
In the future this will become more common. Not for lack of rain. Instead due to warmer - more thirsty air - stripping the ground of moisture. In decades climate projections show the air could be 50% more thirsty over FL!
October 15, 2025 at 10:37 PM
Record (or near record) dry grass/ soil moisture in North/ NW FL.
In the future this will become more common. Not for lack of rain. Instead due to warmer - more thirsty air - stripping the ground of moisture. In decades climate projections show the air could be 50% more thirsty over FL!
In the future this will become more common. Not for lack of rain. Instead due to warmer - more thirsty air - stripping the ground of moisture. In decades climate projections show the air could be 50% more thirsty over FL!
Reposted by Casey Williams, PhD
You can’t overstate just how impressive this heat dome is. It covers 2/3 of contig. US, 80% of US population 90+ high temp (~260 mill people)
Peak intensity of heat dome record for SE US in late July. Peaked at 3.7 sigma which means this heat dome is extremely rare in our former climate of the 1900s
Peak intensity of heat dome record for SE US in late July. Peaked at 3.7 sigma which means this heat dome is extremely rare in our former climate of the 1900s
July 30, 2025 at 1:14 AM
You can’t overstate just how impressive this heat dome is. It covers 2/3 of contig. US, 80% of US population 90+ high temp (~260 mill people)
Peak intensity of heat dome record for SE US in late July. Peaked at 3.7 sigma which means this heat dome is extremely rare in our former climate of the 1900s
Peak intensity of heat dome record for SE US in late July. Peaked at 3.7 sigma which means this heat dome is extremely rare in our former climate of the 1900s
Reposted by Casey Williams, PhD
It's been a long week. So here's just a pretty graphic for your Friday evening... Simulation of atmospheric aerosols in our intricate Earth system.
Sea salt (cyan), dust (magenta), black carbon (orange/red), and sulfates (green)
Created by NASA SVS (svs.gsfc.nasa.gov/5552/)
Sea salt (cyan), dust (magenta), black carbon (orange/red), and sulfates (green)
Created by NASA SVS (svs.gsfc.nasa.gov/5552/)
July 12, 2025 at 12:54 AM
It's been a long week. So here's just a pretty graphic for your Friday evening... Simulation of atmospheric aerosols in our intricate Earth system.
Sea salt (cyan), dust (magenta), black carbon (orange/red), and sulfates (green)
Created by NASA SVS (svs.gsfc.nasa.gov/5552/)
Sea salt (cyan), dust (magenta), black carbon (orange/red), and sulfates (green)
Created by NASA SVS (svs.gsfc.nasa.gov/5552/)
New obsession unlocked
July 7, 2025 at 3:47 AM
New obsession unlocked
Reposted by Casey Williams, PhD
Tragedy in Texas hill country, where 4 months’ worth of rain in just four hours caused Guadalupe River levels to spike 30 feet in just an hour and a half - in the middle of the night.
Two dozen are dead in the resulting floods and another 20 young campers still missing.
apnews.com/article/texa...
Two dozen are dead in the resulting floods and another 20 young campers still missing.
apnews.com/article/texa...
Why the Texas floods were so severe
Flooding rains in and around Kerr County had brought a widespread 10 to 15 total inches by Friday morning. Four months of rainfall came down in four hours.
www.washingtonpost.com
July 5, 2025 at 2:08 PM
Tragedy in Texas hill country, where 4 months’ worth of rain in just four hours caused Guadalupe River levels to spike 30 feet in just an hour and a half - in the middle of the night.
Two dozen are dead in the resulting floods and another 20 young campers still missing.
apnews.com/article/texa...
Two dozen are dead in the resulting floods and another 20 young campers still missing.
apnews.com/article/texa...
AI stands for "Atrophy of Intelligence"
Letting AI do the thinking for you, erodes neural connectivity over time. Seems obvious, but you have to learn through productive struggle or risk long term cognitive growth.
arxiv.org/abs/2506.08872
Letting AI do the thinking for you, erodes neural connectivity over time. Seems obvious, but you have to learn through productive struggle or risk long term cognitive growth.
arxiv.org/abs/2506.08872
Your Brain on ChatGPT: Accumulation of Cognitive Debt when Using an AI Assistant for Essay Writing Task
This study explores the neural and behavioral consequences of LLM-assisted essay writing. Participants were divided into three groups: LLM, Search Engine, and Brain-only (no tools). Each completed thr...
arxiv.org
June 19, 2025 at 5:54 PM
AI stands for "Atrophy of Intelligence"
Letting AI do the thinking for you, erodes neural connectivity over time. Seems obvious, but you have to learn through productive struggle or risk long term cognitive growth.
arxiv.org/abs/2506.08872
Letting AI do the thinking for you, erodes neural connectivity over time. Seems obvious, but you have to learn through productive struggle or risk long term cognitive growth.
arxiv.org/abs/2506.08872
Reposted by Casey Williams, PhD
Everyone help us welcome our amazing REU students to the NSF ERC EARTH Summer Program, FROST! ❄️🔥They’ll spend 10 weeks exploring sustainable HVACR solutions through hands-on research, training & mentorship. 🌱🔧 #NSF #SustainableEngineering #HVACR #ercearth #KU #rockchalk #REU
June 16, 2025 at 8:42 PM
Everyone help us welcome our amazing REU students to the NSF ERC EARTH Summer Program, FROST! ❄️🔥They’ll spend 10 weeks exploring sustainable HVACR solutions through hands-on research, training & mentorship. 🌱🔧 #NSF #SustainableEngineering #HVACR #ercearth #KU #rockchalk #REU
Reposted by Casey Williams, PhD
Those two bright points of light at lower left are Earth and the Moon.
Photographed from the orbit of Mercury.
Photographed from the orbit of Mercury.
June 9, 2025 at 3:41 AM
Those two bright points of light at lower left are Earth and the Moon.
Photographed from the orbit of Mercury.
Photographed from the orbit of Mercury.
I mean, he's not wrong. Bluesky is arguably more toxic because it doesn't have as much fun.
May 11, 2025 at 6:29 PM
I mean, he's not wrong. Bluesky is arguably more toxic because it doesn't have as much fun.
The earthworm is taken up by man to feed himself by luring the fish; the honeybee pollinates the flower and turns nectar into honey; the caterpillar transforms its essence to become something more than it was.
April 22, 2025 at 11:45 PM
The earthworm is taken up by man to feed himself by luring the fish; the honeybee pollinates the flower and turns nectar into honey; the caterpillar transforms its essence to become something more than it was.
Reposted by Casey Williams, PhD
📢Now Hiring! 📢 Director of Recruiting and Mentoring position is now open at University of South Dakota! Environmentally Applied Refrigerant Technology Hub (EARTH) is a Gen-4 NSF ERC focused on building a circular refrigerant economy. Apply now! #earth #nsf #sd
yourfuture.sdbor.edu/postings/43178
yourfuture.sdbor.edu/postings/43178
April 21, 2025 at 6:11 PM
📢Now Hiring! 📢 Director of Recruiting and Mentoring position is now open at University of South Dakota! Environmentally Applied Refrigerant Technology Hub (EARTH) is a Gen-4 NSF ERC focused on building a circular refrigerant economy. Apply now! #earth #nsf #sd
yourfuture.sdbor.edu/postings/43178
yourfuture.sdbor.edu/postings/43178
Reposted by Casey Williams, PhD
Happy Earth Day from NSF ERC EARTH! 💙🌏💚 Together, let's keep earth cool, sustainable, and thriving! #EarthDayay #HappyEarthDay #sustainability #research #NSF #hvacr
April 22, 2025 at 6:15 PM
Happy Earth Day from NSF ERC EARTH! 💙🌏💚 Together, let's keep earth cool, sustainable, and thriving! #EarthDayay #HappyEarthDay #sustainability #research #NSF #hvacr
God's geometry is unmatched
April 19, 2025 at 2:15 AM
God's geometry is unmatched
Reposted by Casey Williams, PhD
Hello??
BREAKING:The National Science Foundation (NSF) has put a cork in its grantmaking pipeline after billionaire Elon Musk’s Department of Government Efficiency (DOGE) set up shop at the agency this week. | Science | AAAS www.science.org/content/arti...
NSF halts grant awards while staff do second review
Action comes after DOGE team arrives at science agency
www.science.org
April 16, 2025 at 10:47 PM
Hello??
It's kind of crazy that we all evolved through the chaos and improbability of it all to stare at little radiation machines and argue with strangers for decades.
April 16, 2025 at 4:19 AM
It's kind of crazy that we all evolved through the chaos and improbability of it all to stare at little radiation machines and argue with strangers for decades.
Reposted by Casey Williams, PhD
OpenAI needs more data LMAO
OpenAI is reportedly working on a social media network to rival Twitter (X)
(via Verge)
(via Verge)
April 15, 2025 at 5:19 PM
OpenAI needs more data LMAO
Staring at this light box is dysregulating.
April 15, 2025 at 5:52 AM
Staring at this light box is dysregulating.