John Callahan
@johncallahan.bsky.social
Service-driven, applied climate and coastal hazards scientist. Keep things simple but no simpler. Trying to do that the best I can. Views my own.
On behalf of the @ametsoc.org Committee on the Coastal Environment, I would like to invite you to submit an abstract for our symposium at the upcoming 2026 AMS Annual Meeting. You can submit abstracts through the symposium website. annual.ametsoc.org/2026/program...
August 8, 2025 at 5:38 PM
On behalf of the @ametsoc.org Committee on the Coastal Environment, I would like to invite you to submit an abstract for our symposium at the upcoming 2026 AMS Annual Meeting. You can submit abstracts through the symposium website. annual.ametsoc.org/2026/program...
Someone just sent this to me. I bet there's some truth to it! 😅
July 5, 2025 at 12:53 AM
Someone just sent this to me. I bet there's some truth to it! 😅
If you see this, list your getaway vehicle.
May 4, 2025 at 12:53 AM
If you see this, list your getaway vehicle.
Did Grok 3 also write the Authors' Contributions?
April 14, 2025 at 5:35 PM
Did Grok 3 also write the Authors' Contributions?
Over on Instagram, NOAA Research is about to start their 2025 Research Bracket Challenge. Round 1 begins Tues Mar 18. #NOAA www.instagram.com/p/DHTwCfbxRCw/
March 18, 2025 at 4:24 AM
Over on Instagram, NOAA Research is about to start their 2025 Research Bracket Challenge. Round 1 begins Tues Mar 18. #NOAA www.instagram.com/p/DHTwCfbxRCw/
Not my home, but I know my way around.
March 2, 2025 at 3:49 PM
Not my home, but I know my way around.
Just saw somebody post this image. 😅 Coming from my generation, love it! However, just like in the movie, the Gremlins now are running around in plain sight!
January 2, 2025 at 8:03 PM
Just saw somebody post this image. 😅 Coming from my generation, love it! However, just like in the movie, the Gremlins now are running around in plain sight!
Without downloading any new pics, what's your energy going into 2025?
December 30, 2024 at 6:21 AM
Without downloading any new pics, what's your energy going into 2025?
Pair these plots of insolation with the tilt of the Earth's axis. Although the axial tilt is roughly constant at 23.5 degrees to our orbit, the solstice is defined by the maximum tilt toward or away from the sun. It's the tilt that drives day length and the seasons!
en.m.wikipedia.org/wiki/Solstice
en.m.wikipedia.org/wiki/Solstice
December 21, 2024 at 4:51 PM
Pair these plots of insolation with the tilt of the Earth's axis. Although the axial tilt is roughly constant at 23.5 degrees to our orbit, the solstice is defined by the maximum tilt toward or away from the sun. It's the tilt that drives day length and the seasons!
en.m.wikipedia.org/wiki/Solstice
en.m.wikipedia.org/wiki/Solstice
This app is awesome! (The screenshot snippet you commonly see is not the only result.) I'm not sure how accurate mine is but I'll take it; it gives me something to live up to! 🙂 #BlueskyRoaster
December 4, 2024 at 6:27 AM
This app is awesome! (The screenshot snippet you commonly see is not the only result.) I'm not sure how accurate mine is but I'll take it; it gives me something to live up to! 🙂 #BlueskyRoaster
58 starter packs when searching for "climate", 5 of which are maxed out at 150 accounts.
November 12, 2024 at 3:58 AM
58 starter packs when searching for "climate", 5 of which are maxed out at 150 accounts.
Inconceivable! By the way, The Princess Bride might be a good option.
December 5, 2023 at 12:22 PM
Inconceivable! By the way, The Princess Bride might be a good option.
Here's the NGdT that we enjoy and are inspired by:
November 22, 2024 at 9:41 AM
Here's the NGdT that we enjoy and are inspired by:
One of my biggest fears for the future...
November 22, 2024 at 9:59 AM
One of my biggest fears for the future...
Back to back tweets in my feed on papers I now have to read. And here I was thinking I had some free time tonight! #SLR #coastalflooding #ClimateCrisis
November 22, 2024 at 10:05 AM
Back to back tweets in my feed on papers I now have to read. And here I was thinking I had some free time tonight! #SLR #coastalflooding #ClimateCrisis
@johnfocook Look what's on the shelf as a recommended (not required) text for my students! We'll be using the Cranky Uncle app as well. @crankyuncles
November 22, 2024 at 10:30 AM
@johnfocook Look what's on the shelf as a recommended (not required) text for my students! We'll be using the Cranky Uncle app as well. @crankyuncles
Shout out to Newark Charter School in DE. Beautifully done grad ceremonies for my son, both outdoors: one with all students, guest speakers, etc.., another with a drive thru procession past all teachers from K-12 with the principal at the end awarding the diploma. Special day!
November 22, 2024 at 10:58 AM
Shout out to Newark Charter School in DE. Beautifully done grad ceremonies for my son, both outdoors: one with all students, guest speakers, etc.., another with a drive thru procession past all teachers from K-12 with the principal at the end awarding the diploma. Special day!
Had a wonderful surprise waiting for me after I finished my defense! Thanks to @geospatialweb!
November 22, 2024 at 11:12 AM
Had a wonderful surprise waiting for me after I finished my defense! Thanks to @geospatialweb!
First shot done! Next one within 21 days. #CovidVaccine
November 22, 2024 at 11:29 AM
First shot done! Next one within 21 days. #CovidVaccine
Yea, and water is wet. Why are the news outlets still covering him and why is the top of my Google News feed?
November 22, 2024 at 11:38 AM
Yea, and water is wet. Why are the news outlets still covering him and why is the top of my Google News feed?
If it wasn't for the last minute, I wouldn't get anything done! How long as this initiative been going, a month? I got 20 minutes, plenty of time. Good luck #Inspiration4. I sincerely hope you reach your goal of $200M to @StJude and make it home safe. Godspeed. 🚀🚀🚀🚀
November 22, 2024 at 11:47 AM
If it wasn't for the last minute, I wouldn't get anything done! How long as this initiative been going, a month? I got 20 minutes, plenty of time. Good luck #Inspiration4. I sincerely hope you reach your goal of $200M to @StJude and make it home safe. Godspeed. 🚀🚀🚀🚀
I AM a cat, both here and there.
November 22, 2024 at 11:55 AM
I AM a cat, both here and there.