Vale Prof Emma Johnston AO FAA FTSE The Academy is deeply saddened to hear of the passing of one of our Fellows, Prof Emma Johnston AO FAA FTSE. She was elected a Fellow of the Australian Academy of Science in 2022 recognising her leadership in the field of marine ecology, 🧵 vimeo.com/762105195

Excited to be the new home for the ARC Centre of Excellence for Our Future Oceans, led by @profmattengland.bsky.social here at UNSW Science www.unsw.edu.au/newsroom/new...

Not every day we get 35 x 10⁶ AUD for ocean research. rms.arc.gov.au/RMS/Report/D... Excellent job from Our Future Oceans team! 🌊 Congrats @profmattengland.bsky.social, @adele-morrison.bsky.social, @andyhogg.bsky.social, @janzika.bsky.social, @nicolamaher.bsky.social and many more!!!

Antarctica and the Southern Ocean hold critical clues about our changing climate – understanding this change is essential for communities worldwide. Watch our latest video to find out how ACEAS is improving physical climate and ecosystem projections. 🎬 Watch now: youtu.be/Us2a4ulf404

New research published today in @nature.com shows the Southern Annular Mode (SAM) – the Southern Hemisphere’s most influential climate driver – has reached its most positive state in more than a millennium. Read the Nature paper: www.nature.com/articles/s43...

Want a state-of-the-art explainer on the big changes occurring in the Antarctic? Check out this recent briefing, delivered to COP30 @iccinet.bsky.social Very much designed for the non-expert, so don't be afraid to dip in! www.youtube.com/live/YjYkKvw... 1/2

The weakening of the atlantic meridional overturning circulation (AMOC - potentially causing cooler winters in Europe as often explained by @rahmstorf.bsky.social) is only part of the even faster weakening of global ocean circulation that could harm nutrients transport to the sea surface #Antarcic 🧪

“This is a wake-up call,” said author and ACEAS Deputy Director, @profmattengland.bsky.social (UNSW). “The evidence shows us clearly that the MOC has slowed down, and if this trend continues the impacts on human societies, climate and ecosystems will be profound.”

"The pace of change is already at about a 30% decline. This just tells you how critically urgent carbon emissions reductions are, because we need to give this overturning circulation every chance of not tipping over what seems to be a very perilous & near tipping point" #ClimateEmergency #Antarctica

If you’re interested in why the #Antarctic overturning circulation is very likely closer to a tipping point than the #AMOC, I touch on the topic in this 10 minute talk presented virtually today at #COP30. Starts at approx. 20 min mark.

Attention all Subantarctic Mode Water enthusiasts ☺️; check out this lovely new paper led by Zhi Li with Sjoerd Groeskamp, @alexhaumann.bsky.social Ivana Cerovečki and Lynne Talley; exploring propagating signals of SAMW anomalies tracing their origins to the tropics. doi.org/10.1175/JCLI...

🧊 New research reveals an overlooked Antarctic process that may skew sea level rise projections. ☀️ A team led by Dr @fabiobdias.bsky.social (ACEAS/UNSW) found East Antarctica ice shelves melt in summer bursts as sea ice retreats and warm water flows underneath. 🔗 antarctic.org.au/overlooked-m...

Why have the sea surface temperature suddenly risen in 2023/24? 🌊 Is it true that climate models cannot simulate such SST jumps? What is common to such jumps? How will SSTs evolve over the next months and years? Are we in uncharted territory? More from our recent study in Nature is here👇

#Matt_England 2021 post64 @profmattengland.bsky.social 6 pumps run the global ocean current. 2 northern pumps are 15% weak #AMOC 4 southern pump are 30% weak #AOC agupubs.onlinelibrary.wiley.com/doi/full/10.... #TP2.16.2 x.com/bratananium/...

Finally, some excellent resources on the 2023 SST anomalies: @polarocean.bsky.social bsky.app/profile/pola... @trackow.bsky.social bsky.app/profile/trac... bsky.app/profile/mice... @tguinaldo.bsky.social bsky.app/profile/tgui... @profmattengland.bsky.social bsky.app/profile/prof...

#7A2.12 #AMOC and #AOC influences: 8. Teleconnections to Other Global Climate Impacts and Tipping Points. @ryankatzrosene.bsky.social What happens in the Atlantic doesn't just stay in the Atlantic. @profmattengland.bsky.social What happens in the Antarctic doesn't just stay in the Antarctic.

post52.3 ice shelves melt, from ocean below. "It’s from the ocean back to the ice, and then back into the ocean again, that can trigger a runaway change where we do see the overturning potentially collapse altogether" @profmattengland.bsky.social said. // same as #AMOC grist.org/climate/anta...

#Matt_England 2025 post54 @profmattengland.bsky.social 1) ice shelves melt 2) Antarctic Overturning circulation slows 3) Less nutrients for phytoplankton moves up 4) less fish 5) less food for humans @polarrobs.bsky.social go.nature.com/45H0bqS grist.org/climate/anta...

#Matt_England 2025 post61 The relentless warming of Antarctica and its surrounding waters is a long-term trend — a sort of chronic sickness for the far south. @profmattengland.bsky.social "Every fraction of a degree" matters go.nature.com/45H0bqS grist.org/climate/anta...

We looked at impacts of a shutdown of the AMOC on Australia in our Tipping Points workshop report for the National Climate Risk Assessment. Unlike N.Hem, it may enhance warming in the S.Hem/Australian region, and could induce a La Nina-like wetting of northern Australia www.csiro.au/-/media/Envi...

#Matt_England 2025 post45 @profmattengland.bsky.social The 25 page pdf is available. note: There is a regime shift 2015 figure 1a. Antarctica is 20Mkm² (bigger than Russia) go.nature.com/45H0bqS bsky.app/profile/natu...

“Sea-level rises of multiple meters mean global political instability that will dwarf what we’re seeing right now.” - @profmattengland.bsky.social #Antarctica #ClimateEmergency grist.org/climate/anta...

Next week! Remember to mark your calendar for the next webinar on marine heatwaves. Register to receive joining instructions: mailchi.mp/clivar.org/m...

This Nature article argues that the recent declines in Antarctic sea-ice, ice-sheet, abyssal meridional overturning circulation (MOC), and marine species habitats point to a potential abrupt changes in the Antarctic environment: 🌊🧪🥼❄️ www.nature.com/articles/s41...

New today: Critical research published in @nature.com on the abrupt and alarming changes being observed in #Antarctica and the surrounding Southern Ocean, led by Prof. @climatenerilie.bsky.social, with @profmattengland.bsky.social and colleagues ⬇️ theconversation.com/from-sea-ice...

From sea ice to ocean currents, Antarctica is now undergoing abrupt changes – with global ramifications theconversation.com/from-sea-ice...

Adam Morton - “Voices arguing that climate action is a waste of time are getting louder. Here’s why they are wrong”

"American science has no need to be "Restored" to a "Gold Standard:" American science has already set the "Gold Standard" for scientific research and publishing for over 80 years." Read the full Editorial by the #AGUPubs Editors-in-Chief: doi.org/10.1029/2025... #GoldStandardScience

Illegal Trump attacks on science: NASA Planning for Unauthorized Shutdown of Carbon Monitoring Satellites eos.org/research-and...

Part 2 of my interview with Robyn Williams on the ABC Science Show, where we discuss funding cuts to US climate science, the threats of sea-level rise, and whether we're already too late to deal with climate change. www.abc.net.au/listen/progr...

This week I joined the wonderful Robyn Williams on the ABC Science Show to discuss our recent North Atlantic Nature paper plus a range of other topics — marine heat waves, polar vortex wobbles, the AMOC, and the deep cost of climate inaction. Part 2 airs next week.   www.abc.net.au/listen/progr...

20 straight days with 30 °C in Finland! Truly unprecedented heatwave still in full swing with maximum today about 32-33 degrees. Even the Arctic regions (e.g. Sodankylä Tähtelä) have seen three weeks above 25 °C, and may rival tomorrow their August heat records.

Our piece in @theconversation.com today: As US climate data-gathering is gutted, Australian forecasting is now at real risk theconversation.com/as-us-climat... And it's not just Australia that will lose out. Forecasting all around the world will be set back decades if these cuts go through.

Tracking and predicting weather and climate is a global endeavour, threatened by Trump. theconversation.com/as-us-climat...

Our article on the impacts US cuts to NOAA/NASA/NSF could have on Australian and global weather and climate and oceans monitoring and forecasting - and the steps Australia needs to protect itself. Written with a significant group of amazing co-authors theconversation.com/as-us-climat...

Congratulations @adele-morrison.bsky.social !!! Awarded the IAPSO ECR Medal in Busan today!! Amazing accolade for an exceptional scientist and all-round great person.

For anyone interested in a deeper dive into our recent Nature paper on the 2023 N. Atlantic marine heatwave nature.com/articles/s41... plus some discussion of recent work related to the SMOC, @danmiller999.bsky.social does an outstanding job as host with cameos from @LeonSimons8.bsky.social 👇👇👇

Thursday at 3pm PT (special day/time) on Climate Chat: Cause of Extreme North Atlantic Warming in 2023 with @profmattengland.bsky.social. We'll also discuss AMOC & S. Ocean. LinkedIn link: www.linkedin.com/events/73511...

Look forward to chatting with @danmiller999.bsky.social & @leonsimons.bsky.social this Friday 8am AEST (Thursday afternoon/evening US time). Will cover a range of topics: the 2023 North Atlantic marine heatwave, Southern Ocean circulation and the AMOC

🚨 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...

See our paper for more details on model setup/ evaluation and modeling downslope flow. doi.org/10.1029/2024... Thanks to my co-authors @adele-morrison.bsky.social, @profmattengland.bsky.social, Wilton Aguiar and Angus Gibson @ccrc.bsky.social@[email protected] 🌊

Unprecedented heat in the North Atlantic Ocean kickstarted Europe’s hellish 2023 summer. Now we know what caused it theconversation.com/unprecedente...

🚨 NCI-powered research reveals what drove 2023’s record North Atlantic marine heatwave 🌊☀️ Scientists used ACCESS-NRI ocean models, run on NCI’s supercomputer & data systems, to uncover the role of record-low winds & shallow ocean layers. 📘 www.nature.com/articles/s41... #HPC #NCIresources

Out today in Nature, our paper on the drivers of the record 2023 summer heating of the North Atlantic. Temperatures warmed to record levels in just a few months. The impacts on climate & ecosystems were severe. A thread on how this work came about and what we found.👇👇🧵 www.nature.com/articles/s41...

Unprecedented heat in the North Atlantic Ocean kickstarted Europe’s hellish 2023 summer. Now we know what caused it theconversation.com/unprecedente...

Our study just out in Nature: the extreme North Atlantic heat in summer 2023 was mainly due to weak winds causing shallow mixed layers, which heat up more quickly. Global warming is causing a trend toward shallow mixed layers, making such extremes more likely. 🌊 www.nature.com/articles/s41...

Out today in Nature, our paper on the drivers of the record 2023 summer heating of the North Atlantic. Temperatures warmed to record levels in just a few months. The impacts on climate & ecosystems were severe. A thread on how this work came about and what we found.👇👇🧵 www.nature.com/articles/s41...

Antarctic meltwater is making the surrounding ocean less salty & less dense, speeding up the Antarctic Slope Current, which acts as a barrier against warm water. The faster current causes eddies in its wake, which can amplify the transport of warmer water towards Antarctica, increasing melting.

Antarctica has its own ‘shield’ against warm water – but this could now be under threat theconversation.com/antarctica-h...