Between 1992-2025, large areas of the grounding line of #Antarctic glaciers have retreated. The largest changes have occurred in W. Antarctica, where grounding lines have retreated 10-40+ km, driven by incursions of warm water masses along deep bathymetric troughs
www.pnas.org/doi/full/10....
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Antarctic ice sheet folk, I'm looking for a Postdoctoral Fellow in Antarctic Ice Sheet Reconstruction [readvertised] for a 3.5yr appointment in Tasmania. Very flexible start date!
Join our new team, figuring out what is happening and what may happen in East Antarctica. 1/4
❄️
Image of the article page for a new paper
If you're interested in how ice sheets respond to climate, particularly over very long timescales, you might be interested in our new (open access) paper:
www.nature.com/articles/s43...
Resolving the past history of the Cook Ice Shelf region of East Antarctica
North-easterly blowing sea ice around off Scott Base, 29/01/26.
Cores of turtle scutes (shells) are not an archive I usually analyse! Nice to go back to my marine science roots 😃
We identify a link between changes in turtle scute growth rates and environmental stressors.
I have also made the code for the changepoint analysis public: github.com/MRPHarris/Tu...
They were definitely checking for seals!
Orcas amidst the sea ice off Scott Base
A map of southeastern Australia showing the temperature anomalies during the heatwave.
While Australian heatwaves were some of the very first extreme events attributed to climate change, people still underestimate how much worse they got - killing more people than all other natural hazards combined. New @wwattribution.bsky.social study. www.worldweatherattribution.org/climate-chan...
We are looking for a Senior Technician in the Ice Core Facility at Earth Sciences New Zealand, formerly GNS Science.
Permanent position working with a great team at a beautiful site (National Isotope Centre, Lower Hutt).
Job description + more info:
www.gns.cri.nz/careers/
Working with some model outputs that rely on the venerable NCEP/NCAR reanalysis as I write this. The excellence, reach & influence of NCAR is global. Horrified but completely unsurprised by this decision.
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. 🌞 ❄️
🧪 Another discrete ice core gas extraction for Kr81 yesterday. Always feels a little nerve-wracking melting ~1.5 kg of core (>750 m deep in this case, from Roosevelt Island)...
~ 6 million year old ice from Allan Hills! Unreal!
www.pnas.org/doi/10.1073/...
This is the second part of the work we covered here, highlighting that CO2 is the dominant forcer in temperature and sea level changes during ice age cycles.
(It's also a great chance for others to cover; this has not been widely reported. There's even an old ice core now that can test this!)
Image showing front page of briefing document
🧪🧵 Future change to #ThwaitesGlacier, Antarctica constitutes the largest uncertainty in #sea-level rise forecasts. The Science Coordination Office of the International Thwaites Glacier Collaboration recently issued a briefing document summarising some key findings - thwaitesglacier.org/findings
HYSPLIT user forum is down. US gov shutdown victim? hysplitbbs.arl.noaa.gov
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Nice to see this paper led by A/Prof John Tibby (Uni of Adelaide) out this past fortnight. The argument for ENSO-driven mid-to-late Holocene drying in eastern Australia is perhaps less convincing than originally thought.
@ausquaternary.bsky.social 🧪
doi.org/10.1002/jqs....
Screenshot that says "Sea Ice Today" and "Ice Sheets Today" Services Reduced. More information is stated: "Beginning October 15, 2025, NSIDC’s Sea Ice Today and Ice Sheets Today services will be reduced because of non-renewed funding. This means no new monthly and mid-month analysis posts for Sea Ice Today or regular posts for Ice Sheets Today, limited comparison tools, and reduced user support."
UGH! When will it end. 😭
"Effective October 15, 2025, due to non-renewed funding, NSIDC has suspended or reduced several Sea Ice Today tools and services."
nsidc.org/data/user-re...
Updated with new expert comments overnight:
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
"evidence is emerging for rapid, interacting and sometimes self-perpetuating changes in the Antarctic environment"
New review out today led by @climatenerilie.bsky.social brings together the rapid changes unfolding in the Antarctic. It's powerful, and sobering, reading.
I am not sure how many people realize the huge array of field affected by these cut to science agencies. For example, the NSF quietly stopped hosting the public available USAP photo library last month, a resource of thousands of historic United States Antarctic photos dating to the 1940s. #histsci
Also, the ducklings have arrived 🦆🦆
A view of Wellington from the north, with a rainbow in view
It's not uncommon to look across the bay and see Wellington getting drenched.
Photo from Monday:
A penguin carrying a ticket. On the ticket are details of how to sign up to BAS's 2025 virtual journey to Antarctica.
Get your tickey here for a virtual journey ✈️ to #Antarctica with @bas.ac.uk ! Perfect for kids and adults alike ❄️🥼🧪🇦🇶
Sign up➡️ tickettoantarctica.com
We’ve collected the oldest ice core, now it’s time to analyse it! 🔍 💻
The @newscientist.com have a new icy-cool video, speaking to BAS scientists about the Beyond EPICA project, highlighting why this work is so important in the face of climate change.
www.newscientist.com/video/249042...
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...
🌊❄️🧪 🇦🇶 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)
