South Korean RV ARAON is indeed the only ship in the world regularly visiting Thwaites Glacier, Antarctica. US no longer has a dedicated Antarctic RV. ARAON headed south now, with Raymond Zhong (NYT) & Miles O’Brien @pbsnews.org on board documenting! Gift link: www.nytimes.com/2025/12/27/c...

Colleagues @agu.org please in messages about NCAR emphasize the negative impact for ALL AMERICANS, in addition to basic research & our science community. Consider the dynamics of the situation and go for the true broadest impact of friendly-fire on US weather & climate understanding for all!

More important headline: “Closure of US institute [NCAR] will do immense harm to all Americans.”

Folks let’s please make this about the impact to the public. Making it about climate scientists does not convey the true impact nor get beyond ideological disagreements about climate. Please n thanks 🙏 ❄️

I know many of you who follow me don't work in climate science, but this is the biggest story in climate right now. Breaking up NCAR makes us all less safe and is another act of self-harm that will take decades to recover from.

Please colleagues speak to the impact that all Americans will feel if NCAR is dismantled! It truly would be widespread and this message may resonate more broadly than the obvious impact to the science community alone! 🙏❄️

Scientists sharing about NCAR: share how this move harms all Americans across the country. It will reduce safety & prosperity by reducing operational & discovery-based understanding of the earth system & atmospheric processes. Making this about impacts to the scientific community doesn’t resonate.

🚨 Late breaking update! 🚨 We'll be joined by @neguse.house.gov, who will be giving brief remarks on news of threats to NCAR during this #AGU25 session at 5:30 CT in E-2. Join us!

This proposed action against America’s National Center for Atmospheric Research (NCAR) is friendly fire damaging all American’s national earth system science human & physical infrastructure. It leaves all Americans less prepared to understand or predict a myriad natural hazards and risks.

Take a journey through time down a new NSF COLDEX ice core borehole just completed by the team in #Antarctica! If you’re at #AGU25 stop by the COLDEX booth in the Exhibit Hall to talk to COLDEX team members from across the 15-institution center funded by NSF! @agu.org Follow us on IG @ coldex_stc

Find me at #AGU25 this week & have a chance to win $100 through Cryosphere BINGO! I’m giving a talk Tuesday 11am in C22B ice cores session & will be at many Cryo sessions/posters through Thursday morning! @agucryo.bsky.social @agu.org 🙏 @glacierdoc.bsky.social for posting & reminding me…

Growing more common as the climate warms, once-rare “atmospheric rivers” could ultimately accelerate ice loss. https://scim.ag/4pwFAhx

Do you think #scicomm is more important than ever these days? I definitely do ... and so do @icy-pete.bsky.social @drjoehanson.bsky.social @ravenscimaven.bsky.social @simonoxfphys.com and many more. Join us TODAY 11am-2pm for a special live @pbsnews.org broadcast + Reddit AMA at the same time! ⬇️

Timeline cleanse: Antarctic sun dogs/halo version. January 2024, RAICA ice core project at Canisteo Peninsula, West Antarctica supported by Korea Polar Research Institute and US National Science Foundation. 🌞 ❄️

I’ll be with @pbsnews.org tomorrow from 11am for a live online AMA on science communication! Join in. Details below.

NSF terminated NB Palmer’ lease early presumably due to flat funding + budget uncertainty going forward. American dominance in #Antarctica wanes, & our polar workforce falters despite how critical polar knowledge is to national security. Follow @ EidsonAerial (IG) for drone 📸 in #Louisiana.

RV NB Palmer back in Louisiana. Was our US #Antarctic research vessel for NSF / US Antarctic Program science & ops, the US now has no Antarctic RV & is pulling from Arctic fleet. Not a dominant stance in Antarctica, where science, capability are geopolitical currency. Eidson Aerial Photog.

Two miles of ice core on the shelf at our national ice core facility in Lakewood, Colorado. The WAIS Divide core from West Antarctica is a 3400m long (deepest US core, 2nd deepest ice core ever) 68,000 year old record of high resolution climate.

The US ice core research community, with international partners, has recovered valuable records of past climate from the Arctic & Antarctic since the 1950s. Here is a sampling of cores—including 6,000,000 year old ice via NSF Center for Oldest Ice Exploration—at the NSF Ice Core Facility.

US Antarctic research vessel strategy 2025: pull an Arctic RV because we have no Antarctic RV. RV Sikuliaq headed south from Dutch Harbor, Alaska. That’s a long way! @ rvsikuliaq on IG

Pine City, MN aurora doing okay

Aurora timeline cleanse from Minneapolis.

Happy Veterans Day! We don’t get Antarctic ice cores w/o skillful military air- & sea-lift. Operation Deep Freeze is important for US science & national security, world-leading in polar ops for 70 years. 📸 Ice cores loaded into an LC-130H at WAIS Divide, West Antarctica, 2009-10 season.

6,000,000 year old ice & plenty of wind and cold! What folks go through for old ice. Team is headed back to Allan Hills now, follow more at COLDEX.org Support via the incredible National Science Foundation and US Antarctic Program. PNAS 6Myr results: www.pnas.org/doi/10.1073/...

New video: A glacier on Antarctica’s Eastern Peninsula experienced the fastest retreat recorded in modern history—in just two months, nearly 50 percent of the glacier disintegrated. Watch this video to understand what happened. Study by @ciresnews #Antarctica #glaciermelt

6,000,000 year old ice snapshots or 1,200,000 year old continuous ice core? www.pnas.org/doi/10.1073/...

When you first read the title of this paper... Shackleton et al., Miocene and Pliocene ice and air from the Allan Hills blue ice area, East Antarctica, PNAS doi.org/10.1073/pnas... (2025).

PNAS: Six-million-year-old ice discovered in Antarctica offers unprecedented window into a warmer Earth via our NSF COLDEX & US Antarctic Program. ❄️ www.pnas.org/doi/10.1073/...

While searching for the world's oldest ice, scientists find sediment sneaking under the #Antarctic ice sheet. phys.org/news/2025-10...

What’s it like to sleep in a tent in #Antarctica? If you like white noise, it’s great! All of our work in Antarctica collecting ice cores to learn about past climate is funded by the US National Science Foundation and the United States Antarctic Program. Teams head south again in November.

🚨New paper 🚨@natgeosci.nature.com Greenlandification of Antarctica - comment by me + colleagues @dmidk.bsky.social @eo4cryo.bsky.social + @universityofleeds.bsky.social showing how Antarctica increasingly resembles Greenland- drawing on a mass of work from @esaclimate.bsky.social rdcu.be/eJiqJ

Similar/identical language for NSF. Here's my transcription of an email shared with me by staff.

Trying to engage more about US Antarctic science and presence, mostly over on IG and TikTok (3 min video limit here, clipped). 🙏 ❄️ @icy_pete

NSF: The vessel [US Antarctic research vessel NB Palmer] is planned to be returned to the operator after a final cruise in October 2025.   www.nsf.gov/geo/opp/upda... @carlosmoffat.com

What does an Antarctic expedition look like? 👀 ~90 min 2023-24 ice core mission to the Amundsen Sea, led by KOPRI (🇰🇷) w/ support from the US National Science Foundation. Our 2x150m cores will give the first 100yr history of climate & environment near critical glaciers. youtu.be/K168bORpHTg?...

“Committee on Oversight & Government Reform is conducting oversight of coordination of federal agencies in advancing national research & other priorities in Antarctica, including U.S. Department of State’s & U.S. Department of Defense’s respective approaches." oversight.house.gov/release/over...

“Committee on Oversight & Government Reform is conducting oversight of coordination of federal agencies in advancing national research & other priorities in Antarctica, including U.S. Department of State’s & U.S. Department of Defense’s respective approaches." oversight.house.gov/release/over...

IPCC projections in the mid-1990s of global sea-level change over the next 30 years were remarkably robust - important for confidence in future projections. The largest disparities were due to underestimated dynamic mass loss of ice sheets agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Our internat’l colleagues already vow to support US Antarctic science in light of cuts & bare-minimum congressional support, paying back generosity from when the US was a leader in Antarctica. We’re lucky to have such colleagues as those at Korea Polar RI & others. www.nytimes.com/2025/08/22/c...

We in the US are teeing up internat’l colleagues. Step up, remind the world you have newer, better vessels than NBP. Use our dysfunction to demonstrate your leadership & secure continued funding for national assets that help secure global & national security through better understanding Antarctica.

This shouldn’t be a controversial position in the United States.

Scientists! @skypeascientist.bsky.social matches scientists with classrooms, libraries, & more for virtual Q&As! It's easy and fun! We are looking for 750 more volunteers by 8/15 If you're down to chat with 1-5 classrooms this semester, sign up here www.skypeascientist.com/sign-up.html

The “report” is a bad high-school level write up falling over itself to be contrarian and look askew from any serious examination of climate change and its impacts. It coming under the auspices of DOE is the only thing lending it any credibility, unfortunately.

Last fall, I attended the premiere of a film that meant a lot to me. In late January, all of its hundreds of planned screenings were canceled without explanation. For @defector.com, I went digging:

Nat Geo would kill for legit science-driven adventure like they found in “For Winter,” over content less credibly grounded in pursuit of knowledge +humans pushing limits. Instead they’ve (Disney?) gotten cold feet & deeply disrespected my colleague Ali & her family. defector.com/why-did-nati...

The DOE climate “report” is a farce, and one that I know my undergraduate weather and climate students will be examining and easily picking apart as a facile exercise in cherry picking that is an embarrassment to our nation and its true scientific experts across all disciplines.

🌊❄️🧪 🇦🇶 Please share: We have learned that the National Science Foundation is moving ahead with plans to decommission the U.S. Research Vessel/Ice Breaker Nathaniel B. Palmer this October. If you care about Antarctic research, please read on (1/n)

Here we go. Tornado watch until 9 p.m. includes Twin Cities. 🌪️ #mnwx www.mprnews.org/story/2025/0...

As climate scientists, we can only tell you why climate change is happening and how severe the consequences will be. It takes voters to choose politicians who will listen and enact policies to avoid the worst possible outcomes.