Ed Doddridge

A group of Southern Ocean scientists giving a round of applause in sign language.

An amazing day of Southern Ocean sessions wrapped up a spectacular week at #OSM26. We leant in to the silent science disco vibe with sign language applause.

Solid advice from the botanical gardens for everyone visiting Glasgow for #OSM26 this week.

The odds are pretty low (infinitesimal really), but we'll never know. And maybe it's better that way; after 17 months at sea, I think that surf board has earned the right to keep its secrets.

The board might have been in the Tasman Sea this whole time, but maybe its adventure took it much farther afield. Wouldn't it be incredible if it went south and did a full circuit around world before washing up in New Zealand?!

Surfboard survives 17 months at sea to wash up in New Zealand A barnacle-covered surfboard that spent 17 months at sea and travelled from Tasmania to New Zealand after it was lost off a boat appears set to be reunited with its owner.

A surfboard that was lost near Tasmania and was found, 17 months later, in New Zealand. What did its voyage look like? We can't ever know for sure, but it's fun to dream.
🌊🏄
www.abc.net.au/news/2025-10...

Ooops 😳
Glad everyone is ok!

Predictably Woodside weren’t impressed:
"It is not possible to link GHG emissions from Scarborough with climate change or any particular climate-related impacts,"
Sure sure 🙄

For the first time, scientists can show the impact of gas project emissions Fossil fuel companies and governments argue it's not possible to link climate impacts to specific projects, but Australian researchers have done the numbers.

New research showing climate impacts from individual fossil fuel projects. 🥵 🔥 🌏
Woodside’s Scarborough project will increase global temps by 0.00039 C and result in millions of extra coral bleaching and hundreds of extra deaths from extreme heat.

Looks like we can call it. Antarctic winter sea ice max has happened and was low, but not as low as 2023 or 2024.

What planting tomatoes shows us about climate change It can be hard to grasp the changes climate change is bringing. To see it in your own life, look at the shifting seasons.

Spring is arriving here in Tasmania, which means it's time to think about planting tomatoes - we can learn a surprising amount about climate change just by looking at the seasons.
🌱🍅

YouTube video by New Scientist Emergency in Antarctica as fears grow that we passed a tipping point

"My biggest concern is that we are starting to see changes cascading through different parts of the Antarctic environment" - Dr. @edoddridge.bsky.social

#ClimateEmergency

youtu.be/Lwn329y7-AI

Come and join us at @imas-utas.bsky.social and help build a next generation coupled ice sheet - ocean model. 🌊🧊

Songs from the South: a cacophony of change around the Antarctic - rst.org.au Antarctica and the Southern Ocean lie at the heart of our global climate system. The Southern Ocean acts as a key regulator of global climate by connecting our oceans both horizontally and vertically;...

Are you in Hobart and looking for the perfect gift for Father’s Day on Sunday?

I can’t help you with that, sorry. But, I am giving a talk to the Royal Society of Tasmania about climate change and Antarctica. All welcome!

Sunday 7 September, 4pm, Geology Lecture Theatre, UTAS.

Oooh wow. That is excellent.

Emerging evidence of abrupt changes in the Antarctic environment - Nature Abrupt changes are developing across Antarctica’s ice, ocean and biological systems; some of these changes are intensifying faster than equivalent Arctic changes, potentially irreversibly, and their i...

"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.

US-French SWOT Satellite Measures Tsunami After Massive Quake Data provided by the water satellite, a joint effort between NASA and the French space agency, is helping to improve tsunami forecast models, benefitting coastal communities.

“A 1.5-foot-tall wave might not seem like much, but #tsunamis are waves that extend from the seafloor to the ocean’s surface,” said Ben Hamlington, an oceanographer at NASA’s Jet Propulsion Laboratory in Southern California." #NASA #JPL

www.jpl.nasa.gov/news/us-fren...

Extreme lows in sea ice induce many changes in the physical, ecological, and societal systems of Antarctica and the Southern Ocean.

A study explores the consequences of years with low sea ice in Antarctica, including declining krill populations, warming seas, increased ice-shelf calving, and reduced access for researchers. In PNAS Nexus: academic.oup.com/pnasnexus/ar...

A line graph showing Antarctic sea ice extent anomalies for each year since 1979. The red line, which shows 2025, has just nosedived and is near the grey line for 2024.

😳
So much for the hope that 2025 might be a little less extreme.
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The impacts of extreme lows in Antarctic summer sea ice are confronting. Read all about it in our new paper just out in @pnasnexus.org

Around 250 million years ago, Earth was near-lifeless and locked in a hothouse state. Now scientists know why The answer confirms scientists’ suspicion that when our planet’s climate crosses certain ‘tipping points’, truly catastrophic ecological collapse can follow.

The speed of change that led to previous mass excitations is terrifyingly slow compared to modern change 😳
"In the case of the Permian–Triassic mass extinction, plants were unable to respond on as rapid a time scale as 1,000 to 10,000 years. This resulted in a large extinction event."

💔

Antarctic summer sea ice is at record lows. Here’s how it will harm the planet – and us New research explores the wide-ranging consequences of record low summer sea ice in Antarctica. From more ocean warming to extra icebergs, it’s bad news we must hear.

More info in @theconversation.com here: theconversation.com/antarctic-su...

A schematic showing many parts of the Antarctic climate system and ecosystems. Losing summer sea ice impacts pretty much all them.

The environment and ecosystems around Antarctica are a complex tapestry of interconnected systems. We've tried our best to think about all the ways that losing summer sea ice will impact our climate, ecosystems, and society. The answers we found were confronting.

The RSV Nuyina (and icebreaker) resupplying an Antarctic base using the sea ice as a platform.

Even humans use the sea ice as a platform. This photo shows the Australian icebreaker, the RSV Nuyina, parked in the ice for a resupply mission. Less summertime sea ice will make it increasingly difficult to resupply Antarctic bases like this. 📸 Jared McGhie (AAD)

Adelie penguins part way through their annual moult on a piece of sea ice.

Lots of the wildlife around Antarctica depends on sea ice. These Adelie penguins are sheltering on a piece of sea ice while they moult and replace all their feathers. Low sea ice will make it harder to find shelter and expose them to predators.

More icebergs means the ice shelves are losing mass faster, but even more importantly, our climate models don't include this affect, so we're probably underestimating how fast the sea level will rise in the future 🌊

A wave crashing into an Antarctic ice shelf. These waves damage the ice shelf causing more icebergs to break off.

Sea ice also protects the Antarctic margins from wave damage. We found twice as many icebergs break off in summers with low sea ice. 📸: Pete Harmsen (AAD)

A map of the temperature anomaly during a summer with extreme sea ice loss. The colour bar maxes out at 1.5°C.

Sea ice reflects sunlight back into space. Taking it away causes the ocean to warm. Taking away lots of it, causes the ocean to warm a LOT. (Figure from Supplementary Information)

Impacts of Antarctic summer sea-ice extremes Abstract. Antarctic sea ice plays many crucial roles in the physical environments and ecosystems of Antarctica and the Southern Ocean. In this study, we sy

Q: What happens when we lose Antarctic sea ice in the summer?
A: Bad things. A short 🧵
New research out today: academic.oup.com/pnasnexus/ar...

What's Antarctic sea ice ever done for us? Quite a lot! It cools the ocean, protects ice shelves, supports an irreplaceable ecosystem. Oh, and helps the ocean absorb $180 billion of carbon per year. Hopefully we can figure this out whilst there still is some summer sea ice...
doi.org/10.1093/pnas...