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Kelsey Jordahl

@kajord.bsky.social
185 followers 441 following 206 posts

Geophysicist by training, software engineer by profession. Interested in science, computing, data. #remotesensing #python #scicomm #geospatial Mastodon: hachyderm.io/@kajord

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Reposted by Kelsey Jordahl
Wisc-Satellite @wisc-satellite.bsky.social · 02/08/2026
1-minute #GOESWest GeoColor RGB images with an overlay of Next Generation Fire System polygons showed the rapid spread of the #OldTrailsFire, which was forcing evacuations in parts of the Spokane area. More on the CIMSS Satellite Blog: cimss.ssec.wisc.edu/satellite-bl... #WAwx
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Reposted by Kelsey Jordahl
Daniel Pomarède @pomarede.bsky.social · 19/05/2026
Psyche images Mars’ Huygens Crater Captured by the multispectral imager instrument, this is an enhanced-color view of the large double-ring crater Huygens and the surrounding heavily cratered southern highlands near 15° south latitude. science.nasa.gov/photojournal... #Psyche #Mars 🧪🔭
Captured by the multispectral imager instrument on NASA’s Psyche mission, this is an enhanced-color view of the large double-ring crater Huygens (upper left; about 290 miles, or 470 kilometers, in diameter) and the surrounding heavily cratered southern highlands near 15 degrees south latitude. The various colors in this dramatic scene are likely due to differences in the compositional properties of dust, sand, and bedrock in this ancient terrain. The image scale is around 2,200 feet (670 meters) per pixel.

The image was acquired with Imager A on May 15, 2026, at about 1:18 p.m. PDT, shortly after closest approach with the planet. The images have been processed into an enhanced-color view (to bring out color details beyond what the human eye can see) using red, green, and blue data from imager filters.

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Credits: NASA/JPL-Caltech/ASU
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Reposted by Kelsey Jordahl
Jackie Caplan-Auerbach @geophysichick.bsky.social · 07/05/2026
In light of our recently published @science.org paper about The Tracy Arm landslide, I'm gonna tell a little story about being wrong and how science works. Join me. www.science.org/doi/10.1126/...
science.org
A 481-meter-high landslide-tsunami in a cruise ship–frequented Alaska fjord
Early in the morning of 10 August 2025, a >64 × 106 m3 landslide struck Tracy Arm fjord in Alaska. The landslide was preconditioned by glacial retreat caused by climate change. The resulting 481 m run...
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Justin Hendrix @justinhendrix.bsky.social · 06/05/2026
The much-covered xAI data center in South Memphis called Colossus 1 was previously used to train the Grok models, before SpaceX's February merger with xAI. Now, it will be used by Anthropic. Unclear what Colossus 2 will be used for.
wsj.com
Anthropic Inks Deal to Use All of SpaceX’s Colossus 1 Compute Capacity
SpaceX will supply 300 megawatts of new computing capacity, using more than 220,000 Nvidia GPUs, by the end of the month.
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Reposted by Kelsey Jordahl
Robert Simmon @rsimmon.bsky.social · 03/04/2026
2nd exposure of the Artemis pic of the dark side of the Earth just dropped. Via @astrojaz.bsky.social My captions for the images: creators.yahoo.com/lifestyle/st... NASA’s Journey to the Moon photo gallery: www.nasa.gov/gallery/jour...
Photo from space that shows Africa, a sliver of Europe, and lots of ocean and clouds (which hide the tip of South America and the Amazon Rainforest) at night. The Western Sahara, cloud-free, stands out against the dark blue Atlantic Ocean. City lights cluster along the coastlines of Morocco, Algeria, and Spain. Clouds hover above Africa’s Sahel and the Congo Basin, while a large storm system twists over the South Atlantic.Earth at night from Artemis II. City lights in South America and (possibly) flashes of lightning above Equatorial Africa are visible that were washed out in the brighter exposure.
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Molly White @molly.wiki · 17/02/2026
so, what do you do for work?
Portion of an FEC contribution receipt:<br>Name of Employer (for Individual): Robinhood Markets Inc.<br><br>Occuptation (for Individual): Senior Director of Financial Crimes
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Dr. Erik Klemetti Gonzalez @eruptions.site · 29/01/2026
Eruptions is back ... and by back, I mean a return to blogging. Back in 2008, I started Eruptions to write about volcanoes as they happen, talk about volcano culture and research. Now I want to go back to that free-wheeling format. Welcome to eruptions.site: eruptions.site/2026/01/28/w...
eruptions.site
Welcome back to Eruptions
So, it has been awhile, right? Over the past few years, there have been a lot of changes to my volcano communication world. Scientists moved from Twitter to Bluesky. People decided they wanted podc…
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Charlie Loyd 🎃 @vruba.bsky.social · 23/12/2025
I just published Potato, a new pansharpening package. It aims to render certain kinds of satellite imagery more clearly and accurately than what’s for sale and on satellite maps today: github.com/celoyd/potato/
github.com
GitHub - celoyd/potato: A small pansharpening model
A small pansharpening model. Contribute to celoyd/potato development by creating an account on GitHub.
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Henning @geohenning.bsky.social · 06/12/2025
What the ACTUAL FUCK, Kīlauea?! Go check it out yourself in the livestream right now. 👇 ⚒️🧪 #volcano www.youtube.com/live/tk0tfYD...
Actual lava fountain spewing out of Kīlauea volcano.
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Olga Nesterova @onestpress.onestnetwork.com · 24/11/2025
Volcano Hayli Gubbi erupted today in Ethiopia for the first time.
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Prof. Simon Carn @simoncarn.bsky.social · 23/11/2025
An explosive #eruption of Hayli Gubbi #volcano, located SE of Erta'Ale in the Afar Rift (Ethiopia), began at ~08:30 UTC on Nov 23. Eruption onset was fortuitously captured by a @planet.com overpass at 08:31 UTC. Hayli Gubbi has no record of Holocene eruptions. Toulouse VAAC reporting ash to ~15 km.
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Oilfield Witness @oilfieldwitness.bsky.social · 13/11/2025
What you see without an OGI camera vs what you see with an OGI camera. What you are seeing in a plume of methane and VOCs. You can see how it is so easy for them to ignore the ongoing systemic methane pollution.
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Kelsey Jordahl @kajord.hachyderm.io.ap.brid.gy · 29/10/2025
Satellite view (GOES-19) of a monster storm as it makes landfall yesterday. (source: satlib.cira.colostate.edu/loop_of_t…) #hurricane #Melissa #xp
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Reposted by Kelsey Jordahl
Dakota Smith @weatherdak.bsky.social · 29/10/2025
Alrighty, ready to see something really cool? (and maybe a little nauseating) The evolution of Hurricane Melissa's mesovortices at peak strength.
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Stuart Atkinson @stuartatkinson.bsky.social · 23/09/2025
Yesterday Curiosity took pix of jagged peaks in the distance with its ChemCam. I stitched them together, did some work on them, and... just look at that view... I've been doing this since Sojourner landed & this is one of my fave images ever... Credits: NASA/JPL-Caltech/LANL/S Atkinson
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Jack Sillin @sillin.bsky.social · 18/08/2025
Following up after a weekend of observing #Erin. The real track fell on the left side of the ECMWF Ensemble guidance envelope, but near a solid cluster of members. Only one deepmind member showed a scenario remotely similar to what actually happened.
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Dr Dan Shugar 🇨🇦 @watershedlab.bsky.social · 13/08/2025
And it's done it! Alsek Glacier has left the island. @planet.com image is from Aug 9. 🧪⚒️❄️
satellite image of a glacier in a lake and an island
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Kelsey Jordahl @kajord.bsky.social · 11/08/2025
and it occurs to me that I could/should move my personal website ( kjordahl.net ) off of GitHub pages as well, since it is just a static site. But another point of friction, and I'm not eager to do that work for little immediate return. But it is at least on my list to do so [1/2]
kjordahl.net
About me
About me
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Kelsey Jordahl @kajord.bsky.social · 11/08/2025
So yes, it is past time to diversify beyond #GitHub for open source repositories. Everything I have there these days is just low-traffic personal projects, so it is certainly possible without much trouble for myself. Not trivial for projects that manage issues, PRs, etc. there, though. #xp
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cira-csu.bsky.social @cira-csu.bsky.social · 06/08/2025
The Krasheninnikov volcano on the Kamchatka Peninsula awakens from a centuries-long slumber, spewing ash into the atmosphere. Along with an eruption from the nearby Klyuchevskoy volcano, both came less than a week after the 8.8 magnitude earthquake that struck the region.
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Dr. Judith Hubbard @judithgeology.bsky.social · 30/07/2025
...and a M8.7 earthquake just hit the Kamchatka peninsula. I guess this lends weight to the megaquake advisory idea... earthquake.usgs.gov/earthquakes/... This is a big earthquake, capable of triggering a trans-Pacific tsunami. Find the latest tsunami warnings here: www.tsunami.gov
earthquake.usgs.gov
The Earthquake Event Page application supports most recent browsers, view supported browsers. Or, try our Real-time Notifications, Feeds, and Web Services.
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Brandon Bishop @brandontbishop.bsky.social · 21/07/2025
The Earth Sciences still haven't figured out what they are in the absence of the oil industry. At the moment, they collectively have a degree of freedom that's not really being recognized, let alone explored.
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Javier Escartín @jescartin.bsky.social · 11/07/2025
🧪⚒️ #NODSSUM cruise - On land, material & samples make their way back to home labs. And this morning we showed sonar images of barrels & photos taken by Ulyx flying at ~10 m above seafloor. Lots to do back in labs & offices. It was intense - good intense. Images: see copyright etc in thread
Copyright Flotte Oceanographique Française - Nodssum cruise.  Swath of Ulyx sonar data (left) and close-up of the barrels at the seafloor, showing as bright spots (from box on the left)Copyright: Flotte Océanographique Française - Campagne NODSSUM.  Barrel dumped at the seafloor at about 4700 m water depthCopyright: Flotte Océanographique Française - Campagne NODSSUM. Barrel at the seafloor showing a probable leak of unknown material - probably tar used to embed the waste in the barrels.
Copyright: Flotte Océanographique Française - Campagne Nodssum. Sonar coverage during a dive of AUV Ulyx (gray background) covering a zone of approximately 6x3 km, with sonar swaths of about 400 m (horizontal stripes).  The identified barrels shown as black dots line up along tracks followed by ships during barge dumping.
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Zack Labe @zacklabe.com · 12/07/2025
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/)
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Kelsey Jordahl @kajord.bsky.social · 10/07/2025
I gave a lightning talk yesterday on a silly little way to hide data in NaN values in floating point arrays: github.com/kjordahl/ste... #SciPy2025 #Python
github.com
GitHub - kjordahl/steganan: Steganography in floating point data with NaN payloads
Steganography in floating point data with NaN payloads - kjordahl/steganan
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Reposted by Kelsey Jordahl
Michele Bannister @astrokiwi.bsky.social · 02/07/2025
Only the third ever interstellar object: a tiny world that started its existence at another star. Now cruising in toward our Sun at ~58 km/s, a faint dot (V~18) in the Southern skies. What a day 🔭
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HydrologyNL @hydrology.nl · 22/06/2025
A nice river, somewhere, meandering through a bit of glacial deposits and cutting into Upper Cretaceous shale and sandstone. High-resolution prints are for sale on request (special edition!).
Digital elevation model of the Grand River, South Dakota, USA. River floodplain in blue (high) to white (low), the rest of the landscape in orange (high) to green (low). The river meanders, the landscape on both sides of the floodplain is eroded with finger-like gullies.
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Dave Petley @davepetley.bsky.social · 23/06/2025
On 3 August 2024, a massive debris flow killed 27 people in the Ridi valley in Sichuan Province, China. A new paper (Cheng et al. 2025) describes how 12,000 cubic metres of landslides turned into a 380,000 cubic metre channelised debris flow. Image by @planet.com eos.org/thelandslide...
Satellite image of the Ridi valley before the 3 August 2024 landslides ad debris flow. Image copyright Planet Labs draped onto the Google Earth DEM, used with permission. Image dated 1 August 2024Satellite image of the Ridi valley after the 3 August 2024 landslides ad debris flow. Image copyright Planet Labs, draped onto the Google Earth DEM, used with permission. Image dated 5 August 2024.
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Kelsey Jordahl @kajord.bsky.social · 23/06/2025
Planet is hiring a Wildfire Data Scientist, based in San Francisco. Do you use remote sensing data to model and understand wildfire behavior? This is a great opportunity to work with cutting edge satellite imagery at global scale. www.planet.com/company/careers/?job… #jobs [1/2]
planet.com
Careers - Satellite Imagery and Monitoring | Planet
We image the world everyday and make global change visible, accessible and actionable. We understand that images can tell the most powerful stories and we are dedicated to being a voice for our Planet to tell them. Join us. Become a part of our story.
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Melaine Le Roy @subfossilguy.bsky.social · 28/05/2025
These are approx. 3 M m3 that collapsed from the Birch Glacier! 🧊🌊 The deposit spans 2.3 km of the Lötschental valley floor!
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Melaine Le Roy @subfossilguy.bsky.social · 28/05/2025
INCREDIBLE !! Here we are... 😱😱😱 After days of overloading and cracks propagating, Birch Glacier collapsed today at 3.24 pm over Blatten and the dammed Lonza river... Devastating! 😭 www.letemps.ch/suisse/valai...
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Kelsey Jordahl @kajord.bsky.social · 22/05/2025
Was this photo of the Grateful Dead with Al Gore taken in the West Wing? Did the Clinton White House have a huge print of the Apollo 17 Blue Marble photo on the wall? cc @rsimmon.bsky.social‬ #BlueMarble #xp heads.social/@bourgwick/11455241644…
Left to right: Dennis McNally, Mountain Girl, Jerry Garcia, Mickey & Caryl Hart, Al Gore, Phil & Jill Lesh, Cassidy Law

standing in front of a large image of the Earth from Space and another smaller framed picture on the wall.
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Kelsey Jordahl @kajord.bsky.social · 13/05/2025
So, I have managed to lock myself out of my own oven. It has been having trouble with temperature, occasionally overheating, so last night I decided to take out the temperature probe and test it to see if it is obviously the problem. It measured 1080 Ω, exactly what is expected at room
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Kelsey Jordahl @kajord.bsky.social · 12/05/2025
Does anyone out there in the Fediverse know anything about cycling Chinook Pass (Washington SR 410 northeast of Mt Rainier National Park) before it opens to cars for the season? I believe it has been cleared to the summit from the east. Thinking about checking it out next
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Kelsey Jordahl @kajord.bsky.social · 10/05/2025
After watching two YouTube videos on tracking down noises your bike can make while pedaling that both said "it's never the bottom bracket," I checked everything I could think of and had no luck finding it. After stripping everything off the bike to get it ready to take it in to the bike shop to
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Kelsey Jordahl @kajord.bsky.social · 07/05/2025
"This letter... shall not serve as any basis for liability against the Department of Commerce or any other agency... before any court or administrative proceeding." Um, I am not a lawyer but I don't think writing in a letter that it can't be used in court means that it can't be used in
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Kelsey Jordahl @kajord.bsky.social · 07/05/2025
ESA’s Biomass satellite deploying its 12 meter antenna fediscience.org/@jgomezdans/1144673… Video: hachyderm.io/@kajord/11446751928047…
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Kelsey Jordahl @kajord.bsky.social · 02/05/2025
What is with Openvibe crossposts with even worse screenshots from other sites? Trying out a new filter to block them, but not sure it will work. I would block every contextless screenshot post if I could.
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Kelsey Jordahl @kajord.bsky.social · 19/04/2025
Took advantage of the chance to ride the North Cascades highway in fine weather yesterday before it opens to cars (likely next week). Lovely day. #BikeTooter
View from Washington Pass lookout of a mountain landscape, from Kangaroo Pass to the Early Winter Spires. The North Cascades Highway is visible below tracing a large hairpin turn.A bicycle leaning against a snowbank. The pavement is dry, the snowbank over 6 feet (2 meters) tall.
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Kelsey Jordahl @kajord.bsky.social · 13/04/2025
Just downloading an app to connect to my derailleur, as one does. #BikeTooter
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Kelsey Jordahl @kajord.bsky.social · 09/04/2025
Remote sensing internships for Canadian students: www.linkedin.com/feed/update/urn:li…
linkedin.com
We’ve partnered with Mitacs to offer five new internships focused on… | Planet
We’ve partnered with Mitacs to offer five new internships focused on software and cross-sensor algorithms for students from Canadian universities! These internships are pretty out of this world 🚀, so if you’re interested in a remote opportunity starting fall 2025 where you will help build and design new satellite technology, be sure to apply! 🛰️ - Mitacs Internship: Advances in sensor fusion for satellite based analysis ready surface reflectance data | https://lnkd.in/gWAacmh2 - Mitacs Internship: Developing open source user tools for Planet’s hyperspectral remote sensing data | https://lnkd.in/gayxYide - Mitacs Internship: Developing robust surface reflectance retrievals for Planet’s hyperspectral satellite Tanager-1 | https://lnkd.in/grkwbw6M - Mitacs Internship: Multi-modal data fusion for satellite based analysis ready surface reflectance | https://lnkd.in/g_4hjYEx - Mitacs Internship: Lunar Pipeline Dashboard | https://lnkd.in/gcM-WBGn All open projects can be searched here: https://lnkd.in/g2FTN564
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Kelsey Jordahl @kajord.bsky.social · 04/04/2025
NOAA websites could go dark tonight as service contract is targeted for "early
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Kelsey Jordahl @kajord.bsky.social · 02/04/2025
Regional NIOSH office in #Spokane will be closing and all staff laid off as part of #DOGE cuts to HHS. www.spokesman.com/stories/2025/apr/…
spokesman.com
Spokane mining safety lab loses staff as part of 10,000 federal health job cuts: 'I don't believe the administration understands the work being done at these sites'
The wave of federal firings by the Department of Health and Human Services on Tuesday included workers at a specialized laboratory in Spokane that studies mining and wildland firefighting safety.
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Kelsey Jordahl @kajord.bsky.social · 01/04/2025
At least two-thirds of the staff at NIOSH (National Institute of Occupational Safety and Health) are expected to be laid off as part of HHS Secretary RFK Jr.'s gutting of his agency. www.cbsnews.com/news/rfk-jr-layoffs… #NIOSH #RFKjr #DOGE
cbsnews.com
RFK Jr.'s layoffs expected to gut worker safety agency NIOSH, officials say
More than 800 employees at the National Institute of Occupational Safety and Health are expected to be cut.
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Kelsey Jordahl @kajord.bsky.social · 28/03/2025
Vibe coding a replacement for a decades-old working system that 65 million people depend on, what could possibly go wrong? www.wired.com/story/doge-rebuild-so…
wired.com
DOGE Plans to Rebuild SSA Codebase In Months, Risking Benefits and System Collapse
Social Security systems contain tens of millions of lines of code written in COBOL, an archaic programming language. Safely rewriting that code would take years—DOGE wants it done in months.
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Ryan Abernathey @rabernat.bsky.social · 28/03/2025
I am so excited to share this new project with NASA and @developmentseed.org . By applying Icechunk and the "virtualization" approach, we can make Petabytes of archival data accessible to high performance analytics. Unlocking NASA's cloud archives will have immense downstream benefits for the world.
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Kelsey Jordahl @kajord.bsky.social · 24/03/2025
What are these people even talking about? Someone with "zero education" doesn't know how to read, let alone ask the right questions. I can only imagine that they are measuring "output" as quantity of stuff, rather than correctness, or insight, or value, or anything else of actual
Mark Cuban
@mcuban.bsky.social

If you have zero education, but learn how to ask Al models the right questions, in many jobs you will be able to outperform someone with an advanced degree, but who is unwilling to use Large Language Models. Just takes a smartphone, curiosity to experiment and a mindset to learn.

February 17, 2025 at 9:59 AM
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Kelsey Jordahl @kajord.bsky.social · 17/03/2025
The Mid South gravel cycling event was scheduled to happen on Saturday in Stillwater, Oklahoma, before the surrounding area was surrounded by wildfires the day before. Over 4000 people were registered for the event, which was
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Kelsey Jordahl @kajord.bsky.social · 14/03/2025
Wait, so you can become Prime Minister of Canada without ever having been elected to any public office?
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