Last month was the 4th lowest #Antarctic sea ice extent on record for the month of November. This was 1,320,000 km² below the 1981-2010 November average. Data from the @nsidc.bsky.social: nsidc.org/data/seaice_...

Agents in Key Largo, Florida ripped this woman wearing medical scrubs out of her car as she screamed she is a US citizen. Agents cuffed her and put her in one of their cars. She was eventually let go, per David Goodhue of the Miami Herald, who also took this footage:

📣 PRESS RELEASE #IPCC authors meet in Paris 🇫🇷 to begin drafting the Seventh Assessment Report More than six hundred experts appointed to the three Working Groups of the IPCC are gathering in Paris this week to draft IPCC’s Seventh Assessment Report. 🔗 bit.ly/4ir09cC

#IPCC Chair Jim Skea said of the IPCC’s first joint Lead Author Meeting in Paris today that the meeting marks the beginning of our assessment of the latest science related to climate change. 🔗 bit.ly/4ir09cC

First in IPCC history as well a special focus will be placed on methods and processes to ensure on Gender, Diversity, Equity and Inclusivity. So proud to be part of this! #ipcc_ar7

Here we go, @ipcc.bsky.social first lead author meeting (and for the first time ever covering all three working groups) A mixed feeling of excitement and responsibility

We are starting! #ipcc_ar7

Leopards, faces, etc.

Reminiscing his 1995 IPCC report involvement, Ben Santer retired atmospheric scientist at Lawrence Livermore, gives an emotional account of that it is to be write and to defend climate science. Big thank you to those like him who paved the way. thebulletin-org.cdn.ampproject.org/c/s/thebulle...

The @wcrpclimate.bsky.social - @ipcc.bsky.social co-sponsored workshop on high impact events and tipping points concluded on Friday - and only today for some of us! Really good work from a great number of colleagues. The workshp report will be published soon here www.wcrp-climate.org/wcrp-ipcc-2025

Day #2 of the WCRP/IPCC Workshop on Earth System High Impact Events, and Tipping Points and their Consequences. @wcrpclimate.bsky.social @ipcc.bsky.social @bas.ac.uk @aspectsouth.bsky.social Our work for today is cut out. ⬇️

#cop30 decision's "recalling with concern" that "historical cumulative net carbon dioxide emissions account for at least four fifths of the total carbon budget for a 50% probability of limiting global warming to 1.5C" was true *in 2019*. It's now 94%, best guess. /1 unfccc.int/sites/defaul...

And if IPCC AR7 is not released until after the GST in 2028, then they will still be using the 2019 number until 2029, when the budget for 1.5°C would have been exceeded... (unless someone comes up with new bigger budgets)

🎥 #ClimateAction that protects, conserves and restores #nature PL RP🩷💚💙 @ret.social @rollingredroads.bsky.social @inuyasha1953.bsky.social @lealuck.bsky.social @charlesbeaudoin.bsky.social @diegojimmyjames.bsky.social @eavellan.bsky.social @leza1121.bsky.social original #climate graph by IPCC

COP30 just wrapped and the Paris Agreement turns 10 this year. Here's where we are on climate: 🧪 www.scientificamerican.com/article/the-...

Re-routing of ships around the Cape of Good Hope led to a natural experiment. By "comparing NO₂ [unaffected by the sulfur-reducing regulations], with cloud droplet number, which is sensitive to sulfur, [they] found a 67% reduction in ships' cloud-altering abilities" after the new IMO regulations.

Come on New York, you can do it too. #Mamdani

Nocturnal campus life.

If we don't rapidly phase out fossil fuels, we can say goodbye to coral reefs, the Greenland and Antarctic icesheets, and permafrost. The results will not be pretty.

Today I will be speaking at COP30 on the High Impact events and Tipping Points assessment report. It will be livestreamed here, starting at 10am Belém time: www.youtube.com/@iccinet

Σαν σήμερα. Η εξέγερση των φοιτητών του Πολυτεχνείου. Events that shaped generations. And very pertinent today.

65 Years Ago,,, History was made. #RubyBridges

It's official: Katie Wilson is the next mayor of Seattle!

How about massively reducing emissions first ? www.theguardian.com/environment/...

Never forget: At breakneck speed we are leaving the stable Holocene climate in which human society developed and thrived. Weather extremes are outside historical experience. Sea-level rise is accelerating. Dangerous tipping points are ahead. Graph: ed-hawkins.github.io/climate-visu...

Very unfair.

Impossible to ignore what’s happening to #Arctic temperatures in the month of November... Data from @copernicusecmwf.bsky.social ERA5 reanalysis.

The amazing research article "The 2025 state of the climate report: a planet on the brink" isn't getting enough notice, so I made a little video with the summary of key findings from the paper. If it's too fast at times, just pause and read. academic.oup.com/bioscience/a...

New study by Falkena et al. shows that most climate models don’t capture the established key mechanism that can destabilize the North Atlantic subpolar gyre. Those models that get it predict abrupt subpolar gyre changes in coming decades 😳. @swinda.bsky.social esd.copernicus.org/articles/16/...

💌 The 8th Letter from the COP30 Presidency makes an urgent call: it is time to accelerate climate adaptation. To adapt is to evolve: to protect lives, drive development, and reduce inequalities. Belém can be the turning point! Read the full letter at cop30.br

Just attended Nordic Tipping Week to discuss the latest science on the AMOC tipping point and its societal impacts. Now I’m feeling some serious post-conference anguish. Being back in a world pretending everything’s normal is exhausting. The cognitive dissonance is heavy.

Just published, a land-mark paper by Annemarie Eckes-Shephard et al.! It assesses the performance of a new generation of Demography-enabled Dynamic Global Vegetation (D-DGVMs), that attempt to simulate the changing size and age structure of trees in forests.

There's a good essay in @science.org about the importance of free global access to climate and weather data. The atmosphere doesn't know about borders, so paywalls anywhere hurt predictions everywhere; even more so for those who can't pay www.science.org/doi/10.1126/...

We honor the life and legacy of Dr. Jane Goodall, the pioneering conservationist, champion for wildlife, and unwavering voice for the planet. This photo from our 2021 Annual Meeting honored her extraordinary impact. Her legacy will continue to inspire.

“To be a good scientist, I have to take emotions out of work. Still, I would say looking at this data, when I allow myself to connect to it emotionally, then I am afraid. This really scares me” - Dr. Levke Caesar, co-lead of Planetary Boundaries Science Lab

Apply now to be an IPCC (Intergovernmental Panel on Climate Change) AR7 (Seventh Assessment Report) Chapter Scientist and contribute directly to the global climate change assessment 🗓 Deadline: 18 October 2025 🔗 Apply here: www.ictp.it/opportunity/... #IPCC #ClimateScience #EarlyCareerResearchers

Seven of nine planetary boundaries now breached – ocean acidification joins the danger zone," says PIK director Johan Rockström presenting the key findings of the Planetary Health Check 2025 today. #PlanetaryBoundaries ➡️ www.pik-potsdam.de/en/news/late...

History made for the ocean: #BBNJ Agreement enters into force, protecting high seas & deep seabed, safeguarding life under water. “Our ocean is the foundation of our very existence. Today we took an important step forward to save our ocean, & to save our future” - ED @ingerandersen.bsky.social

In time for the weekend. Episode 6 🎧 Jonathan Donges from @pik-potsdam.bsky.social speaks about Overshoot Legacy and Tipping Elements. Don't miss it 👇👇👇 overshootconference.org/the-overshoo... and here: open.spotify.com/episode/11F3...

It's not your imagination: Wildfire smoke in the U.S. has dramatically worsened since 2019. According to a new study, it's already killing 41,000 people a year - and it's poised to get much worse. new from me @johnmuyskens.bsky.social and @sadbumblebee.buzz www.washingtonpost.com/climate-envi...

We're hiring! We have an open search for an Assistant Professor in physics of the ocean and/or atmosphere in Columbia's Dept. of Earth and Environmental Sciences. Please circulate this information to good candidates, and apply yourself if you are one! Ad & link to apply: apply.interfolio.com/173819

RIP GOAT Be like Robert. Support badass journalism.

It can take decades, or even millennia, for Earth’s temperature to reach equilibrium when faced with rising carbon dioxide levels. New research looks to the past to make estimates of future warming patterns.

Maybe the land carbon sink is weaker than we thought. Big implications: "A lower-than-expected land carbon sink would also imply that the land biosphere may be closer to transitioning from a net carbon sink to a net source than current models predict" Randerson et al. www.science.org/doi/10.1126/...

The land carbon sink, and what happens to it in a warming world, is one of the "known unknowns" I worry about most. At some point, it could start adding a significant amount of additional carbon to the carbon we release by burning fossil fuels.

🔬 New paper alert: "The role of artificial intelligence in climate change scientific assessments" @plosclimate.org As #AI adoption accelerates, should @ipcc.bsky.social integrate these tools? Can LLMs (chatbots) communicate findings while maintaining scientific rigour? doi.org/10.1371/jour... 1/9

New climate risk seminar series. Info on the seminar series: risk-seminar.ryanmcgranaghan.com Register here: docs.google.com/forms/d/1KUw...

2025. ‘Communities already have the solutions’: why I advocate for Indigenous knowledge. Environmental scientist and global advocate Jessica Hernandez works to secure women’s rights and to integrate Indigenous science into environmental policy. www.nature.com/articles/d41...

We trigger a non-linear amplification spiral now... "Between 2000–2009, heatwaves became about 20 times more likely, and during 2010–2019, about 200 times more likely." "Climate change has increased the intensity by 1.4 °C over 2000–2009, 1.7 °C over 2010–2019 and 2.2 °C over 2020–2023." #climate