Today, the RRS Sir David Attenborough set sail from the UK 🚢 bound for Greenland as part of the GIANT project – an ambitious mission to study how rapidly melting fjord glaciers are affecting Atlantic currents, climate, and wider marine ecosystems. #ArcticResearch #ClimateScience 🧵1/4

Another way how the heat wave 🥵(and the many more to come) is impacting us: None of my model simulations are running on the HPC atm because more than half of the computes notes have been "removed from service to ensure cooling is adequate as higher temperatures are forecast in the Edinburgh area."

Greenland’s glaciers are losing ice at an unprecedented pace 🇬🇱 The bad news: vast quantities of freshwater entering the North Atlantic could disrupt major ocean currents - changing ocean ecosystems and European climate. The good news: this GIANT collaboration is getting to the bottom of it, fast ⬇

Our paper on a new ice shelf basal melt parameterisation is out! tc.copernicus.org/articles/19/... Small-scale processes in the ocean drive ice shelf basal melt, and large-scale ocean models can’t resolve these processes. Therefore, models use melt parameterisations, but these can still be improved.

Stratified suppression of turbulence in an ice shelf basal melt parameterisation

Abstract. Ocean-driven basal melting of Antarctic ice shelves is an important process that affects the Antarctic Ice Sheet, global climate and sea level. Basal melting is controlled by small-scale pro...

tc.copernicus.org

This week I started a new chapter @bas.ac.uk 🎉 As part of the GIANT project I will be modelling how Greenland’s glaciers are melting 🧊🌊 I am excited to see how this multi-disciplinary approach will improve our understanding of such an important topic! www.bas.ac.uk/project/gian...

🚢 Can you imagine submitting your PhD thesis from the deck of Australia’s icebreaker en route to Antarctica? That’s exactly what @christinaocean.bsky.social (UNSW) did earlier this year. Explore this beautiful multimedia story from UNSW 👉 news.unsw.edu.au/en/breaking-... @ccrc.bsky.social

Breaking the ice: why study Antarctica?

From unique wildlife to resilient microbes, world-changing climate dynamics to untapped biotechnological potential – four UNSW scientists outline what makes Antarctica a laboratory like no other.

news.unsw.edu.au

I am thrilled to share this multimedia story highlighting my experience on the #Denman Marine Voyage earlier this year, alongside the inspiring work of 3 other Antarctic scientists: news.unsw.edu.au/en/breaking-... ✍️ @melissalyne.bsky.social 🌊🇦🇶 #DMV @antarcticsciaus.bsky.social @ccrc.bsky.social

Breaking the ice: why study Antarctica?

From unique wildlife to resilient microbes, world-changing climate dynamics to untapped biotechnological potential – four UNSW scientists outline what makes Antarctica a laboratory like no other.

news.unsw.edu.au

Exciting paper answering a question we have been asking for years: Why is the ocean-sea ice model ACCESS-OM2-01 simulating the formation of Dense Shelf Water around Antarctica so well? More in this paper by colleagues from ANU and @antarcticsciaus.bsky.social 🌊🇦🇶

Wilton Aguiar@will-ton.bsky.social · last yr.

We figured out a cheap-ish way to make ocean models create Dense Shelf Waters (DSW) on the surface of the Antarctic continental shelf! How? Fast answer: Ocean surface cells thinner than 1 m! Long answer on the paper: dx.doi.org/10.1029/2024... ---- More info in the thread

A new paper led by @christinaocean.bsky.social investigates the sensitivity of Antarctic Bottom Water (AABW) formation and export to horizontal model resolution 👉 formation of dense shelf waters decrease while the export of AABW increases with finer model resolution doi.org/10.1029/2024...

Sensitivity of Antarctic Bottom Water Formation and Export to Horizontal Model Resolution

Dense Shelf Water formation decreases when the model resolution is refined from 1/10° to 1/20° to 1/40° due to shelf freshening Antarctic Bottom Water export increases with finer model resolution...

doi.org

🚨 New paper alert 🚨 We developed the new PanAntarctic model and assessed the sensitivity of Antarctic Bottom Water (AABW) formation and export to horizontal model resolutions of 1/10°, 1/20° and 1/40°. Open access paper in JAMES: doi.org/10.1029/2024...

🎓 Finishing up my time @ccrc.bsky.social with a PhD exit seminar yesterday. It was great meeting you all over the last 4 years, hope to see you again soon 🤞 🌏 🔜 🌍 Now I am getting ready to move to the other side of the world again, stay tuned for updates on what's happening next 🙌

From East Antarctica to the world: @antarcticsciaus.bsky.social outreach program goes global Celebrating the power of connection through science on the Denman Marine Voyage 🌏 #DMV AAD | @antarctic.bsky.social | @arcsaef.bsky.social antarctic.org.au/from-east-an...

From East Antarctica to the world: outreach program goes global - ACEAS

From East Antarctica to the world: outreach program goes global A young, talented and diverse group of Antarctic researchers working in the field alongside some of the sector’s research veterans was a...

antarctic.org.au

Thanks for being part of it and sharing your experience @christinaocean.bsky.social ! 🌊 #DMV

UNSW Climate Change Research Centre@ccrc.bsky.social · last yr.

Being able to see the Antarctic landscape and wildlife with my own eyes left me speechless at times, while clumsy penguins often left me smiling. This Antarctic research voyage was truly unique, fascinating and really impressive. Thank you @antarcticsciaus.bsky.social l for the opportunity!

Have a look at this amazing video about the #Denman Marine Voyage! It opens with stunning aerial footage of the Denman Glacier and highlights our scientific achievements. 🇦🇶🌊🧪 youtu.be/tbnl7M4kZTk #DMV @antarcticsciaus.bsky.social @antarctic.bsky.social

Achievements of the Denman Marine Voyage 2025

YouTube video by Australian Antarctic Program Partnership

youtu.be

We are back in Hobart after 2 months at sea on RSV #Nuyina 🌊 It was an incredible voyage to the Denman Glacier and Shakleton Ice Shelf with great people, an impressive range of science, stunning landscapes, and cute wildlife. @antarcticsciaus.bsky.social #Denman Marine Voyage #DMV

Working with the hydrochemistry team for @antarcticsciaus.bsky.social on the #DMV, @christinaocean.bsky.social has also captured some incredible images of the natural environment around the Denman Glacier ⬇️ @ccrc.bsky.social | UNSW (portrait: Pete Harmsen / AAD)

Finishing the #Denman Marine Voyage with more outreach I invited students from my old high school in Northern Germany to come on a virtual tour of RSV Nuyina. Through the @antarcticsciaus.bsky.social school outreach program, 96 year 11 students learned about the science we do on DMV: 🌊🧊🇦🇶🧪🦭🌡️🐙☁️

Happy World Penguin Day 🐧 🐧 🐧 A curious Emperor penguin having a quick look at RSV Nuyina while we deployed a mooring near the Shakleton Ice Shelf a few weeks ago. #Denman Marine Voyage #DMV @antarcticsciaus.bsky.social

On March 1, Antarctic sea ice reached its smallest coverage of the year. This year’s minimum extent tied 2022 and 2024 for the second-lowest summer sea ice area observed since satellite records began in 1979. Learn more: www.climate.gov/news-feature...

Inspiring the next generation of polar & marine scientists 🧑‍🔬 👨‍🔬 👩‍🔬 Taking students on a virtual tour of RSV Nuyina, explaining marine instruments and showing samples we have gathered in the last weeks has been such a fun and rewarding experience. #DMV #Denman Marine Voyage

Australian Centre for Excellence in Antarctic Science (ACEAS)@antarcticsciaus.bsky.social · last yr.

From East #Antarctica, to the world! 🌏 #DMV scientists share the wonder and celebrate connection through our school outreach program - with Kinderhaus childcare in Munich, Weston High School in Massachusetts and Mount Nelson PS in Hobart. @antarctic.bsky.social | @arcsaef.bsky.social | AAD

Yesterday was our last day in the sea ice. I was really lucky to have experienced this amazing landscape with its adorable wildlife in the last weeks. We had a very successful science program in areas of East Antarctica never studied before 🌊 🧪 Goodbye Antarctica 👋🇦🇶🐧 #DMV

Yesterday, the weather cleared, paving the way for these stunning images from the air 🙌 📷: Pete Harmsen / AAD

🛰️ Seen from space: our satellite mapper Pat Wongpan @utas.edu.au found RSV Nuyina and the Denman Marine Voyage #DMV on 10 April near Shackleton Ice Shelf in East #Antarctica. Using Landsat-8 imagery, he identified Nuyina from its track through the sea ice, reddish colour and 160.3 m length.

CCRC’s PhD student Christina Schmidt @christinaocean.bsky.social is onboard RSV Nuyina, and they have just crossed the halfway mark of the Denman Marine Voyage: “We had an intense and exciting last 3 weeks near the Denman Glacier, the fastest retreating glacier in East Antarctica. #Antarctica

The #DMV has officially crossed the halfway mark and the team is on the move again, heading west to explore a new area off the Shackleton Ice Shelf 🧊🌊 For our science lead Delphine Lannuzel, it's a good time for mapping out the next few weeks of research! 📷: Katharina Hochmuth

🌊 Denman Marine Voyage #DMV in #Antarctica: Mysterious 'sea pigs', murky mud, jade icebergs, exquisite marine life ... and the sheer excitement of doing science where no-one has been before. 🎞️ www.abc.net.au/news/2025-04...

RSV Nuyina in Antarctica

Follow the latest news headlines from Australia's most trusted source. Read in-depth expert analysis and watch live coverage on ABC News.

abc.net.au

🌊 Low sea-ice cover means the Denman Marine Voyage #DMV can get to places no humans have been before. Claire Yung (@scienceanu.bsky.social & @antarcticsciaus.bsky.social) says it allows us to obtain critical data, but is also a reminder of serious and unprecedented changes to Earth’s climate.

We have been lucky in the last 2 weeks and observed sea ice formation. Starting with little ice crystals that can form pancakes or thin grey sheets. Older ice flows from last winter can be 1 m thick and covered in snow. And if there is a penguin on an ice floe - even better. #Denman Marine Voyage

Can one ever get enough of watching icebergs? I certainly can't: so many different shapes and sizes, amazing shades of white and blue, some are even green or black. A good explainer on how icebergs get their colour on our #DMV blog: antarctic.org.au/mysteries-of... @antarcticsciaus.bsky.social

A little poem to celebrate today's World Day for Glaciers and World Poetry Day: I have now seen the Denman Glacier with my own eyes under stunning blue and mystical grey skies. I am still speechless by its beauty and vast extend, and more convinced than ever this is important to defend. 1/4