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Ed Doddridge

@edoddridge.bsky.social

1.4K followers 850 following 190 posts

Oceanographer, climate scientist, and outdoor enthusiast. Born at 344 ppm. he/him Doddridge.me 📍 Lutruwita, Australia

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Ed Doddridge @edoddridge.bsky.social · Jul 2

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...

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

academic.oup.com

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Ed Doddridge @edoddridge.bsky.social · 18h

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.
🌱🍅

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.

theconversation.com

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Reposted by Ed Doddridge

Dr. Aaron Thierry @thierryaaron.bsky.social · 4d

"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

Emergency in Antarctica as fears grow that we passed a tipping point

YouTube video by New Scientist

youtu.be

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Ed Doddridge @edoddridge.bsky.social · 29d

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

Chen Zhao @czhao-ice.bsky.social · Sep 4

🌊❄️ We’re hiring a Coupled Ice Sheet–Ocean Modeller at IMAS/UTAS!
🔗 careers.utas.edu.au/ci/en/job/501445/coupled-ice-sheetocean-modeller
Please repost or share with anyone who may be interested 🙏 @utas.edu.au @imas-utas.bsky.social @antarctic.bsky.social @antarcticsciaus.bsky.social

Current Vacancies

careers.utas.edu.au

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Ed Doddridge @edoddridge.bsky.social · Sep 5

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.

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;...

rst.org.au

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Ed Doddridge @edoddridge.bsky.social · Aug 26

Oooh wow. That is excellent.

Ed Doddridge @edoddridge.bsky.social · Aug 20

"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.

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...

www.nature.com

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Reposted by Ed Doddridge

WDEF Chief Meteorologist Austen Onek @wdefaustenonek.bsky.social · Aug 8

“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...

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.

www.jpl.nasa.gov

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Reposted by Ed Doddridge

PNAS Nexus @pnasnexus.org · Jul 25

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...

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

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Ed Doddridge @edoddridge.bsky.social · Jul 18

😳
So much for the hope that 2025 might be a little less extreme.
🌊🧊

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.

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Ed Doddridge @edoddridge.bsky.social · Jul 11

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

PNAS Nexus @pnasnexus.org · Jul 10

A new study shows these extremes trigger cascading effects—from ocean warming to habitat loss for top predators. The findings underscore the urgent need for sustained long-term monitoring.

In New Scientist: www.newscientist.com/article/2486...

In PNAS Nexus: academic.oup.com/pnasnexus/ar...

Scenic view of icebergs drifting in water, framed by towering mountains, showcasing Antarctica's summer landscape.

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Ed Doddridge @edoddridge.bsky.social · Jul 8

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."

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.

theconversation.com

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Ed Doddridge @edoddridge.bsky.social · Jul 2

💔

Ed Doddridge @edoddridge.bsky.social · Jul 2

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

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.

theconversation.com

Ed Doddridge @edoddridge.bsky.social · Jul 2

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.

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

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Ed Doddridge @edoddridge.bsky.social · Jul 2

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)

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

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Ed Doddridge @edoddridge.bsky.social · Jul 2

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.

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

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Ed Doddridge @edoddridge.bsky.social · Jul 2

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 🌊

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Ed Doddridge @edoddridge.bsky.social · Jul 2

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

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Ed Doddridge @edoddridge.bsky.social · Jul 2

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)

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

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Ed Doddridge @edoddridge.bsky.social · Jul 2

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...

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

academic.oup.com

2 34 78

Reposted by Ed Doddridge

Will Hobbs @icecoldwill.bsky.social · Jul 1

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...

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Ed Doddridge @edoddridge.bsky.social · Jun 29

"The claim an Iranian nuclear bomb would pose an existential threat to Israel or the United States and justifies unilateral, preventive military attacks makes no sense."

Could we live with a nuclear-armed Iran? Reluctantly, yes

Both Israel and the US claim a nuclear-armed Iran would pose an existential threat. It wouldn’t. Here’s why.

theconversation.com

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Ed Doddridge @edoddridge.bsky.social · Jun 28

Love the caption clarification in this week’s Nature Anthropocene briefing.
I definitely thought it was a picture of @whysharksmatter.bsky.social 🤪

A screenshot from the Nature Anthropocene briefing showing a picture of a shark above a quote from David Shiffman. Helpfully there is a clarification in parentheses at the end of the quote saying that it is not a picture of David Shiffman.

Reposted by Ed Doddridge

Institute for Marine and Antarctic Studies @imas-utas.bsky.social · Jun 25

IMAS / AAPP sea-ice researcher @edoddridge.bsky.social has been awarded the prestigious Dr Peter Smith Medal by The Royal Society of Tasmania, in recognition of his outstanding research on sea-ice changes around Antarctica.
✨Read more: tinyurl.com/5n93seke
📸 Credit Bernard Pryor OAM. @utas.edu.au

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Reposted by Ed Doddridge

Australian Antarctic Program Partnership @antarctic.bsky.social · Jun 20

🌊 AAPP physical oceanographer @edoddridge.bsky.social @utas.edu.au has received a prestigious Royal Society of Tasmania medal for his outstanding research on sea-ice changes around #Antarctica.

🏅 aappartnership.org.au/royal-societ...

Royal Society of Tasmania medal for sea-ice researcher - AAPP

AAPP researcher wins prestigious award

aappartnership.org.au

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