"On a hotter planet, there will be more heatwaves, and they will become more intense" It's remarkable how straightforward a message can at times still be informative.

Centre for Environmental Policy, Imperial@ic-cep.bsky.social · 4w ago

The drying of France’s Loire River and intensifying European heatwaves are stark reminders of a warming world. As Professor @joerirogelj.bsky.social explains: “On a hotter planet, there will be more heatwaves, and they will become more intense.”

The drying of France’s Loire River and intensifying European heatwaves are stark reminders of a warming world. As Professor @joerirogelj.bsky.social explains: “On a hotter planet, there will be more heatwaves, and they will become more intense.”

France's heatwave 'desert': River is reduced to sandbank

As Europe experienced its most severe ever recorded heatwave in June, drought conditions worsen in France as images show a completely barren Loire River in Montjean-sur-Loire.

dailymail.com

Professor @joerirogelj.bsky.social and Dr @robinlamboll.bsky.social have contributed to the latest Indicators of Global Climate Change (IGCC) assessment, showing human-induced warming reached 1.37°C in 2025. At current emissions trends, 1.5°C could be exceeded within around four years.

Earth's climate continues to warm as heat accumulation reaches record levels

Researchers from Imperial College London have contributed to a major international climate assessment showing that the Earth is accumulating heat at...

imperial.ac.uk

This is an important one! If you wonder what's wrong here, see for example a paper from @joerirogelj.bsky.social and myself a while back: iopscience.iop.org/article/10.1... or also from @meinshausen.bsky.social and Zeb Nicholls: iopscience.iop.org/article/10.1...

Unintentional unfairness when applying new greenhouse gas emissions metrics at country level

Unintentional unfairness when applying new greenhouse gas emissions metrics at country level, Rogelj, Joeri, Schleussner, Carl-Friedrich

iopscience.iop.org

Michael E. Mann@michaelemann.bsky.social · 3mo ago

"Top Climate Scientists Accuse the Livestock Industry of Pushing Fuzzy Math to Downplay its Climate Warming Emissions" by @georginagustin.bsky.social for @insideclimatenews.org: insideclimatenews.org/news/2005202...

🌍 Cutting carbon emissions isn’t enough – we also need carbon removal. But planting trees or energy crops at scale can clash with biodiversity. Careful planning is key, says Professor @joerirogelj.bsky.social and colleagues. 🌱 #ClimateAction #Biodiversity #CarbonRemoval #Sustainability

Planting trees to remove carbon can harm the environment – or protect it: study highlights trade-offs

Carbon removal strategies may conflict with biodiversity conservation, but careful choices could bring benefits.

theconversation.com

In @theconversation.com @rubenpruetz.bsky.social, @joerirogelj.bsky.social, Sabine Fuss and Gaurav Ganti write that carbon removal strategies may conflict with biodiversity conservation in many instances: for example, planting trees and energy crops in pristine ecosystems such as savannas.

I just resigned from NASA. It breaks my heart to leave, but I’ve become convinced the best path forward is to do the best science I can, and that can’t be here anymore. I’m still in love with the promise of those four magic letters. Ad astra per aspera, and remember: Earth is the only good planet.

POSTDOC OPPORTUNITY 🌍 Are you an early-career researcher interested in working at the interface of climate science, law, and policy? A new opportunity at @granthamicl.bsky.social at @imperialcollegeldn.bsky.social 👇

Another great job opportunity for an early career researcher to join us as a chapter scientist on our journey to pull together the best possible chapter on sustainable low-carbon futures for the @ipcc.bsky.social 7th assessment report! Details below 👇

Celine Guivarch@celineguivarch.bsky.social · 5mo ago

You would like to contribute directly to the IPCC 7th Assessment Report ? 📢 I am recruiting a Chapter Scientist to work with me and the author team of Working Group 3 Chapter 3, on projected futures in the context of sustainable development and climate change. Join our amazing team 👇

The EU’s agri-food system must prepare for rising climate risks and accelerate emission reductions, according to the @esabcc.bsky.social. A new report, co-authored by Imperial's Prof @joerirogelj.bsky.social, highlights rising climate risks to Europe's food system about provides 6 recommendations 🧵

Are you a young academic working on climate and feel ready for a move? We are recruiting two Assistant/Associate Professors @granthamicl.bsky.social at Imperial College London @imperialcollegeldn.bsky.social (1/6)

Today, @joerirogelj.bsky.social, member of @esabcc.bsky.social, spoke at the @europarl.europa.eu's conference ‘From Promise to Action – 10 Years of the Paris Agreement’. He highlighted the role of science in climate policymaking, the impact of disinformation, and the outlook for the future.

New discussion paper just dropped that’s taken shall we say a little work to get this far … essd.copernicus.org/preprints/es... please be kind. Not on an at all sensitive topic in the slightest.

How well can we quantify when 1.5 °C of global warming has been exceeded?

Abstract. Parties to the 2015 Paris Agreement agreed to limit the long-term increase in global average temperature to well below 2 °C and pursue efforts to keep temperatures below 1.5 °C relative to p...

essd.copernicus.org

A commentary in @nature.com argues the 1.5°C temperature limit has “outlived its usefulness” because we’re headed towards overshoot and should be replaced by a “clean-energy shift” metric. That’s the wrong diagnosis. Here is why. www.nature.com/articles/d41...

As we breach 1.5 °C, we must replace temperature limits with clean-energy targets

Actionable goals are needed to guide the world towards what needs to happen most quickly: shifting economies to clean energy sources.

nature.com

Today, ESM2025 officially comes to an end! Since 2021, our European consortium has been building a new generation of Earth System Models to support mitigation & adaptation strategies aligned with the Paris Agreement. Watch these clips of our final video to see how far we've come! 🧵👇 #ESM2025isOver

Professor @joerirogelj.bsky.social said: "COP30 leaves us between a rock and a hard place […] These NDCs have come in hesitantly, inadequately and unambitiously. They move the needle, but insufficiently to confidently avoid 1.5°C or even 2°C of global warming.”

New text @cop30brazil.bsky.social provides a glimpse of where #COP30 might land. Some reflections on references to science and evidence. /1 unfccc.int/sites/defaul...

COP30: "Best available science" = IPCC is back The second draft "mutirão" text "recognises the centrality of equity and the best available science…as provided by the IPCC"

⚠️Current pledges and policies to reduce greenhouse gas emissions put the world on a high-risk climate track, towards warming levels of 2.8°C by the end of this century warn @joerirogelj.bsky.social, @robinlamboll.bsky.social & @j-bird.bsky.social. 📒 ow.ly/cpTr50Xq1X1 #COP30

In 2009, the Maldives’ underwater cabinet meeting showed the world the reality of rising seas. 🌊 As Professor @joerirogelj.bsky.social notes, it helped put the 1.5°C target “front and centre.” 16 years on, its message is more urgent than ever.

'This is going to be much bigger than we thought': The legacy of a famous underwater photoshoot

The photo shaped the world's perception of the existential threat climate change poses to low-lying island nations.

bbc.co.uk

COP30: Study reveals “highest possible ambition” for countries' climate pledges With COP30 kicking off on Monday, a new paper by Julia Schönfeld and Professor Joeri Rogelj provides a framework for assessing countries’ climate pledges 🧵 Learn more: ow.ly/CiB050XnMK2

COP30: Study reveals “highest possible ambition” for countries' climate pledges | Imperial News | Imperial College London

A new study, for the first time, shows how the ‘highest possible ambition’ of countries' climate pledges can be assessed.

ow.ly

Stories abound these days showing that global warming exceeding 1.5C is now part of science's best estimate. What does that mean for the #ParisAgreement 1.5C goal? A good time to revive a thread about a piece we wrote earlier this year on this topic in @science.org 👇🌍🌡️

Joeri Rogelj@joerirogelj.bsky.social · last yr.

What becomes of the 1.5°C goal now that global warming is approaching that level?🌍🔥🌡️ In a new @science.org Policy Forum we explain how the 1.5°C goal remains a critical legal & ethical benchmark, even as the world nears and may soon exceed 1.5°C of global warming🧵1/ www.science.org/doi/10.1126/...

Two years ago, the @esabcc.bsky.social published its advice on the EU's 2040 emissions reduction target. We indicated a 90-95% reduction relative 1990 levels. Today, EU climate ministers agreed on a 90% target, with an 66.25-72.5% reduction as part for its new NDC for 2035.

European Scientific Advisory Board on Climate Change@esabcc.bsky.social · 9mo ago

Today, EU climate ministers agreed on a 90% net reduction in GHG emissions by 2040. The Council also updated the NDC with an indicative 66.25–72.5% reduction by 2035 The @esabcc.bsky.social contributed to this process by providing independent scientific advice on the 2040 climate target.

Today is the official launch of this year's @unep.org #EmissionsGap report. It's title says it all OFF TARGET that's true for progress, NDCs and implementation

UN Environment Programme@unep.org · 9mo ago

New national climate plans have barely moved the needle on limiting global warming. Yet there is hope. According to UNEP's latest #EmissionsGap Report, accelerated adoption of renewable energy and falling costs mean we have the tools to cut emissions now: www.unep.org/news-and-sto...

What is the current state of climate action? What do latest country pledges add up to? And how much global warming are we in for? 🌍🌡️ 🔥 For the 16th year in a row, we publish the @unep.org #emissionsgap report. As usual, I looked the assessment of the global gap and its global warming implications.

Grantham Institute - Climate Change and the Environment@granthamicl.bsky.social · 9mo ago

NEW: The latest climate pledges under the Paris Agreement have driven only a slight fall in predicted global temperature rise over the course of this century. The UN Emissions Gap Report finds that implementing current policies would lead to up to 2.8°C of warming, down from 3.1°C. 🧵

Grantham Institute Director of Research Professor @joerirogelj.bsky.social was lead author on Chapter 4 of the report, which also includes contributions from Imperial’s Dr @robinlamboll.bsky.social. Read the report in full here: ow.ly/V7Zy50XmtCz

OUT NOW: we revisit the pivotal moment when science, institutions and politics aligned to deliver the UK’s #NetZero target. At a time of political divergence, the evidence for #ClimateAction remains clear. Evidence-based #ClimatePolicy is more relevant than ever. @granthamicl.bsky.social

Net Zero: The inside story of the UK’s climate target

YouTube video by Grantham Imperial

youtube.com

OUT NOW: we revisit the pivotal moment when science, institutions and politics aligned to deliver the UK’s #NetZero target. At a time of political divergence, the evidence for #ClimateAction remains clear. Evidence-based #ClimatePolicy is more relevant than ever. @granthamicl.bsky.social

Net Zero: The inside story of the UK’s climate target

YouTube video by Grantham Imperial

youtube.com

Next week, we reflect on how science and society shaped the UK’s #NetZero target. As political consensus wavers, the scientific evidence underpinning the need for rapid #ClimateAction remains robust and unequivocal. 1/2

COMING SOON… In 2019, the UK made history as the first major economy to commit to net zero by 2050. But, while the science hasn’t changed, political consensus is fracturing. We can’t wait to share our new film & to tell the inside story of the UK’s climate target Stay tuned… 👀13 October