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Julia Smith Wellner

@wellner.bsky.social

Sedimentologist mainly interested in ice sheets and sea-level changes. Professor trying to make more people care about what those sediments are telling us.

85 Posts517 Follower358 Folgt
Julia Smith Wellner@wellner.bsky.social · last wk.

Nice to see another student paper out from IODP Exp379 detailing West Antarctic glacial history from sediment cores. @us-sciod.bsky.social @gcrepository.bsky.social www.nature.com/articles/s41...

West Antarctic Ice Sheet advance since the early Pliocene - Nature Communications

This study shows that West Antarctic Ice Sheet history in the Amundsen Sea sector since 4.33 million years ago was closely linked to global temperature change, with a major expansion threshold crossin...

nature.com

Julia Smith Wellner@wellner.bsky.social · 5mo ago

Congratulations @shelfyice.bsky.social and team on this new paper. Those hard won forams had a story to tell! www.nature.com/articles/s41...

Ocean heat forced West Antarctic Ice Sheet retreat after the Last Glacial Maximum - Nature Communications

Amundsen Sea records show warm Circumpolar Deep Water drove major West Antarctic Ice Sheet retreat from 18,000–10,000 years ago. Subsequent cooling stabilized the grounding line, indicating ocean heat...

nature.com

Eos@eos.org · 7mo ago

“President Trump’s talk of ‘buying’ Greenland is not only an affront to Greenland’s autonomy but also a dangerous distraction from the urgent work of addressing environmental change impacts to US citizens,” the letter reads. eos.org/research-and...

Hundreds of Scientists “Vehemently Oppose” U.S. Effort to Purchase Greenland - Eos

About 350 scientists scientists have signed a letter condemning U.S. President Donald Trump’s efforts to acquire Greenland.

eos.org

Julia Smith Wellner@wellner.bsky.social · 9mo ago

A clear summary of much of what we have learned about Thwaites Glacier, and what we still need to learn.

Rob Larter@polarrobs.bsky.social · 9mo ago

🧪🧵 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

Image showing front page of briefing document
Christine Siddoway@iphigenesdream.bsky.social · 10mo ago

Nice synopsis of #IODP379 #AmundsenSea research that examines the early #Pliocene record of warming of West Antarctica, using sediment cores from deep sea @passchier.bsky.social @wellner.bsky.social #JOIDESResolution

Early Pliocene West Antarctic Ice Retreat Explored

In a groundbreaking new study published in Nature Communications, an international team of geoscientists has unveiled compelling evidence of significant West Antarctic ice retreat during the early

scienmag.com

Paul Voosen@voosen.me · last yr.

Just after publication, an NSF spokesperson responded to @science.org confirming the plan: "NSF is terminating the lease of the research vessel Nathaniel B. Palmer in FY 2026. NSF has also begun the process to identify vessels and partnerships to support marine science. " We're updating the story.

Julia Smith Wellner@wellner.bsky.social · last yr.

Thanks to @voosen.me for helping spread the word about this potential major blow to U.S. polar science. @carlosmoffat.com and I are grateful to all the people who have shared their concerns by signing our letter. Keep reaching out to protect the USAP icebreaker---and science in general.

Paul Voosen@voosen.me · last yr.

My latest: Polar scientists warn that the White House and NSF are planning to terminate the Nathaniel Palmer, the only US research icebreaker capable of handling Antarctic extremes, this October. So far the plan has seen minimal pushback from Congress.

Joshua Weitz@joshuasweitz.bsky.social · last yr.

How bad will it be? Catastrophic. Proposed cuts to #NSF, #NIH, and #NASA will set the US R&D landscape back 25 yrs+, cause economic and job loss now, and undermine innovations to come. But, this is the WH's *proposed* budget. Speak up now before it is too late. (inflation adjusted $-s below)

NSF, NASA and NIH budgets per year, inflation adjusted from 2000-2025 along with the proposed cuts. NSF includes research component only. Massive cuts across all sectors, well below support spanning 25 years.
Julia Smith Wellner@wellner.bsky.social · last yr.

With a deadline Monday, I’m wondering how much of my weekend to spend on my proposal? Should I keep working nights and days off scrambling for a piece of the remaining pie? This is not auspicious timing for keeping my motivation going.

Kevin Anchukaitis@thirstygecko.bsky.social · last yr.

Trump administration cuts to NSF will result in more than 200,000 FEWER people per year involved in basic science, training, and education - what should have been the next generation of US scientists. This isn't even eating your seed corn, it is setting your seed corn on fire and salting the earth.