Holly Simpkin

Scientists at the Planetary Science Pavilion on #COP30: Most of the 1.5°C CO₂ budget is gone. 2025 emissions still rising. ~4 years of budget left. We need 5% cuts yearly & roadmap to phase out fossil fuels. Science must stay in the text, not be scrubbed.
planetarysciencepavilion.org/2025/11/14/s...

Multi-century global and regional sea-level rise commitments from cumulative greenhouse gas emissions in the coming decades - Nature Climate Change It is important to understand how much long-term sea-level rise is already committed due to historical and near-term emissions. Here the authors use a modelling framework to show how decisions on glob...

Really important paper led by my @iiasa.ac.at colleague Alex Nauels www.nature.com/articles/s41...
“The difference between decisive climate action today and continued high emissions is not just measured in degrees of warming but also in meters of sea-level rise” 👏👏👏

Smart framing from very smart people! Illustrates what emissions reductions in the next decades can save 🌊

Kkkkk yesyesyes. Just another day reading the news in 2025.

Johan Rockström addresses heads of state during United Nations General Assembly: “failure is not inevitable, it is a choice” 24.09.2025 – Johan Rockström, Director of the Potsdam Institute for Climate Impact Research (PIK) addressed heads of state, ministers and other dignitaries in New York today.

Read his speech in full here: www.pik-potsdam.de/en/news/late...

Climate Summit 2025 To accelerate momentum, the UN Secretary-General will host a Special High-Level Event on Climate Action on 24 September 2025, as a platform for leaders to present their new Nationally Determined Contr...

LIVE: the UN Secretary General's Climate Summit is kicking off in New York with remarks from climate scientists to heads of state, ministers and representatives. First up - PIK Director Johan Rockström.

🔗Livestream: webtv.un.org/en/asset/k12...

New from us: India's power sector emissions fell for only the 2nd time in half a century, due to both economic and weather factors and record clean energy growth. The current drop is unlikely to be sustained but clean energy projects in the pipeline can peak power sector emissions well before 2030.

Systematic attribution of heatwaves to the emissions of carbon majors - Nature Climate change made 213 historical heatwaves reported over 2000–2023 more likely and more intense, to which each of the 180 carbon majors (fossil fuel and cement producers) substantially contributed.

🚨 Important paper in Nature: "Systematic attribution of heatwaves to the emissions of carbon majors".

www.nature.com/articles/s41...

PIK develops a new global, high resolution data set of atmospheric rivers 04.08.2025– Researchers from the Potsdam Institute for Climate Impact Research (PIK) have developed a new data set of the Earth’s atmospheric rivers – PIK Atmospheric River Trajectories (PIKART) – imp...

New data set for Atmospheric Rivers: PIKART!💨
These narrow bands of moisture in the lower atmosphere act as conveyer belts of water vapour and typically carry more than twice the flow of the Amazon River.
www.pik-potsdam.de/en/news/late...

Heatwaves may cut GDP by 0.5 pct points in Europe, Allianz says Allianz Research compared a day with temperatures above 32 degrees Celsius to half a day of strikes.

Report from Allianz Research shows a day with temperatures above 32 degrees Celsius in 2025 has a comparable effect on GDP as half a day of strikes.

Recent heatwaves across Europe could slow economic growth in Europe by half a percentage point.
www.reuters.com/sustainabili...

🥵The weather station at PIK in Potsdam has recorded the driest first six months of a year since measurements began in 1893 – with only 146.8mm of rainfall. The long-term average for this location in the first half of the year is around 300mm.
www.pik-potsdam.de/en/news/late...

⚠️Global warming caused by humans is advancing at 0.27°C per decade – the highest rate since records began.

This is one of the indicators updated every year by over 60 international scientists in the annual Indicators of Global Climate Change report – published today. doi.org/10.5194/essd... /1

Peaking peaking peaking @clairefyson.bsky.social @neilgrant.bsky.social @carlschleussner.bsky.social @joerirogelj.bsky.social

COP30 must heed the elephant in the room: fossil fuels Oil, gas and coal cause three-quarters of global emissions. Why are they nowhere to be seen on the Belém climate summit's agenda?

Comment: Oil, gas and coal cause three-quarters of global emissions. Why are they nowhere to be seen on the Belém climate summit’s agenda?
www.climatechangenews.com/2025/05/08/c...

On holiday but 🔌 for this episode of Volts feat. one of my smartest friends Antoine. It’s a great convo on trade and climate and extra interesting to listen to from China!

Countries across the world use more land for golf courses than wind or solar energy - IOPscienceSearch Countries across the world use more land for golf courses than wind or solar energy, Weinand, Jann Michael, Pelser, Tristan, Kleinebrahm, Max, Stolten, Detlef

Next time you read that renewables are going to encroach on land use for farming, just be safe in the knowledge that our basic golfing needs are taken care of.

🕵️ Are you a news hound with a knack for storytelling and a sharp eye on the global climate agenda?

We’re #hiring a Senior Climate Communications Manager to translate complex science and policy analysis into accessible, engaging content.

Apply here 👉: climate.jobs.personio.com/job/1975939?...

Reaching the Paris Agreement’s 1.5°C limit: are we there yet? Two new papers published in Nature Climate Change today ask whether the recent global temperatures at or exceeding 1.5° warming above preindustrial mean the Paris Agreement’s 1.5°C limit has been reac...

With 2024 coming in at or above #1o5C, and a run of 12 months to June 2024 where monthly warming was at or above 1.5°C, questions are coming about whether or not the longer-term 1.5°C limit set out in the Paris Agreement has been reached.

2 papers out today look at these Qs. 🧵👇

A reminder that the only way for Europe to reduce exposure to volatile fossil gas prices is to significantly reduce gas consumption.

Have you ever wondered if the global leadership on climate would be less depressing if we had more Luisas and fewer Elons? With gender equality backsliding everywhere, it’s super important to stress its role in addressing the climate crisis. A 🧵 on our new paper on gender equality & scenarios:

The gall of the NZ govt to announce a 2035 NDC that is *a 1% difference* from its 2030 target. Have screenshotted what seems to be a delusional inclusion from the announcement's webpage. What an absolute pisstake.

Embarrassed to be a Kiwi today.
environment.govt.nz/news/second-...

YouTube video by M0vie Shrek - Ogres are like Onions (Blu-Ray 1080p) English [scene]

All this talk about the #NCQG being an onion with layers #COP29

New gas and oil has prevented CO2 global emissions from peaking The Global Carbon Budget's first estimate for 2024's CO2 emissions suggests emissions rose by 0.8% this year. We delve into why we haven't peaked emissions yet.

The Global Carbon Budget out today predicts emissions will rise 0.8% this year, meaning we have not yet peaked 🏔️❌

While our expectations for renewables were actually surpassed, this wasn't enough to bring emissions down.

We delve into why 🧵⤵️
climateanalytics.org/comment/new-...

Ash covered Skaftafell glacier in Iceland. Credit: Radharc Images / Alamy Stock Photo

Guest post: What 1.5C overshoot would mean for climate impacts and adaptation | Dr Carl-Friedrich Schleussner, Prof Rachel Warren, Dr Fabien Maussion, Dr Niels Souverijns and Dr Quentin Lejeune

Read here: https://buff.ly/3Cjl0Oe