This is bunk. These sites are chosen to not interfere with radar systems, according to the process listed on...the Department of Energy's website: windexchange.energy.gov/projects/rad...

I've put together my predictions for 2026 and 2027 temperatures over at The Climate Brink. I expect 2026 will likely end up similar to 2023 and 2025 at ~1.4C, while 2027 will likely be considerably warmer (conditional on El Nino): www.theclimatebrink....

A massive new report by over 100 scientists modeling the climate effects of the 2022 Hunga volcanic eruption finds "The record-high global surface temperatures in 2023/2024 were not due to the Hunga eruption": juser.fz-juelich.de/...

This train of logic seems to go: 1) Invent AGI 2) ... 3) Universal basic income I'd posit that massively enriching AI labs and companies while others lose jobs would be a much more likely outcome than somehow changing our politics to enable a post-scarcity socialist utopia 🙄

Threatening to dismantle NCAR, our premier weather and climate research institute (apparently) because Colorado refuses to pardon someone accused of tampering with voting machines is a sad example of our current kakistocracy in action… www.nytimes.com/2025...

NCAR is a unique & valuable asset - far more than a climate model, or observations, or technology, or training ground, or gathering space. It covers weather, space weather, data, climate, paleo-climate, and everything in-between. It's building is an icon, but it's iconic status goes far beyond that.

The new GloSAT temperature dataset extends our observational estimates of global temperature change back to 1781 Blog: climatelabbook.substack.com/p/new-estima... Paper by Morice et al.: essd.copernicus.org/articles/17/...

New Orleans Convention Center, my badly laid-out nemesis: I am back to walk your length.

On The Climate Brink, I write about the connection between climate change and flooding in the Pacific Northwest. Yes, climate change is enhancing the flooding.

Actual climate scientist here. 2.5C is on the optimistic end of the literature on current policy outcomes, which spans the range from 2.3C to 3C. I wrote a review of the literature on the subject earlier this year: journals.sagepub.com/doi/10.1177/...

The US has already largely ceded renewable energy manufacturing dominance to China, but now we also risk also falling behind on next generation clean energy: www.nytimes.com/2025...

This is a bit of a misinterpretation of what current policies entail. They generally do not assume that countries accomplish either their NDCs under Paris or net zero goals. CPs with flat emissions lead to warming close to 3C by 2100, while 2.5C requires declines journals.sagepub.com/doi/10.1177/...

In a new article over at Carbon Brief, I explore why the past three years – 2023, 2024, and 2025 – have been exceptionally warm. The main culprits turn out to be a combination of El Nino and internal variability, declining aerosols, and a strong solar cycle: www.carbonbrief.org/...

I have a new update to climate model-observation comparisons over at The Climate Brink, covering CMIP3, CMIP5, and CMIP6. Models perform well globally. The latest generation shows too much long-term warming but better reproduces recent trends: www.theclimatebrink....

November 2025 was the third warmest November on record in ERA5 at 1.54C above preindustrial levels – below only the records set in the prior two years (2023 and 2024):

LLMs are fast becoming a major source of information. In a new piece over at The Climate Brink, I argue that LLMs are fundamentally consensus machines, and could help defragment our information ecosystem – at least if their creators do not put thumbs on the digital scale.

It’s almost like something dramatically changed after the Industrial Revolution! (figure via Ed Hawkins)

A number of new estimates of current policy warming by 2100 have been released in recent months, including three prominent ones from UNEP, IEA, and CAT in the run-up to COP30. I've got a new piece over at The Climate Brink digging into the details: www.theclimatebrink....

If CO2 emissions go to zero in 2050 (top), the sinks (green) will bring atmospheric CO2 back down (middle), & temperature will stabalise at ~1.7°C (bottom). Going to zero today will keep us <1.5°C Constant emissions leads to 2.6°C, rising rapidly thereafter. www.nature.com/articles/s41...

Published today in Earth System Science Data: The Global Carbon Budget 2025 essd.copernicus.org/preprints/es...

NEW – Analysis: Fossil-fuel CO2 emissions to set new record in 2025, as land sink ‘recovers’ | @hausfath.bsky.social @pfriedling.bsky.social Read here: buff.ly/F4rY1GP

The new 2025 Global Carbon Budget finds that fossil fuel emissions will reach a new high in 2025. Total CO2 emissions (including land use) remain flat at 2024 levels. While the land sink is up from 2024, carbon sinks are weakening: www.carbonbrief.org/...

There are a lot of things I agree with in Bill Gates' new climate memo, but I think it sets up a false dichotomy between reducing emissions and helping the world's poorest. I've put together a piece with my thoughts over at TCB:

The new UNEP report is out with the latest estimates of 2100 warming outcomes under current policies, NDCs, and net-zero targets. Here is how it compares to both the IPCC scenarios and other estimates (CAT and IEA, who will release their own updates soon!).

Read about the Gates memo in the news? Wondering what @kimcobb.bsky.social, @hausfath.bsky.social, @weatherwest.bsky.social, @sammyroth.bsky.social and I think about it? No need to wonder: @coveringclimatenow.org is hosting a free webinar panel. Join us THIS AFTERNOON:

Your daily dose of climate hope. From the team at RMI: rmi.org/wp-content/u...

There has been a lot of recent interest in mitigating "super pollutants", short-lived climate pollutants like methane and refrigerants. We should cut emissions, but using them as carbon offsets risks breaking the math of net zero: www.theclimatebrink....

I wanted to offer some thoughts on the Gates climate memo that has been circulating this week. While I can't directly speak for others, I can say that my own response is one of dismay & deep frustration (and that this view is shared by many climate/Earth scientists). [1/n]

Climate change DEFINITELY affects hurricane: STRENGTH: Warmer water is hurricane food RAINFALL: Warm air holds more water vapor SURGE: Warmer water expands, warmer ice melts, sea levels rise PREDICTION: hotter seas mean faster intensification

This is cool, 6 million year old ice from Antartica with inferred temperature ~12°C warmer than the late Pleistocene. No CO2 level yet! (That will be highly anticipated!) www.pnas.org/doi/10.1073/...

To quote my friend @drkatemarvel.bsky.social, climate change won't make humanity extinct but we can do better than "not extinct". Raise your standards people!

After a modest decline over the first half of the year (and after record 2024 warmth), global temperatures are ticking back up. The past two days have been the warmest on record for this time of year in ERA5 and the highest temperature anomalies since January.

I’ve never been shy nor ashamed of the fact that the core of my research is around SRM. I think there is merit in research: if we can show there are ways to ameliorate current and future climate change, we should know. If there aren’t, or if SRM could be used to make things worse, we should know.

September 2025 was the third warmest on record in the Berkeley Earth dataset. But this downplays how anomalous it was; without 2023 and 2024 this year would have been well above any prior records and well above the long-term trend:

🌍 Berkeley Earth Monthly Press Briefing 📅 Thur 10/23 | 8 AM PDT / 5 PM CET Join @rarohde.bsky.social , @hausfath.bsky.social, and our team for insights from the September 2025 Temperature Report + a live Q&A. 🔗 Register: us02web.zoom.us/webinar/regi...

Picture how big the Hoover Dam is. An absolute unit. The Hoover Dam has a power capacity of 2 gigawatts (GW). The solar farm that the Admin just cancelled could have produces 6.2 GW of power. That's more than 3 Hoover Dams.

Koonin spending an entire WSJ column criticizing @nationalacademies.org’s report for not being a review of his DOE climate contrarian report when (1) to my knowledge, the Academies have never reviewed a gov’t report without being asked (though such an independent review, or comparable, is necessary…

Renewables (primarily solar and wind) have grown dramatically over the past five years while other electricity sources have been relatively flat. Renewables are on track to generate more electricity than coal in 2025 (and already have over H1 of the year):

The @metoffice.gov.uk use weather station observations to reconstruct changes in UK average temperature since 1884. @copernicusecmwf.bsky.social produce the ERA5 reanalysis which reconstructs global weather every hour back to 1950 using a weather forecast model. Their estimates agree. Just sayin'.

Around 78% of the world has seen all-time maximum monthly temperature records set since the year 2000, with 38% set in past five years alone. In a new analysis over at The Climate Brink I take a look at where and when records were set: www.theclimatebrink....

September 2025 was the third warmest September on record at 1.47C above preindustrial levels in ERA5, behind only the prior two years (2023 and 2024). With 9 months of the year now in, I estimate 2025 will approximately tie with 2023 for the second warmest year on record at ~1.48C.

"God will ask us if we have cultivated and cared for the world that he created for the benefit of all and for future generations, and if we have taken care of our brothers and sisters - what will be our answer, my dear friends?"

My latest on The Climate Brink: Is this the most embarrassing error in the DOE Climate Working Group Report? The DOE CWG authors confuse detection and attribution with emergence.

Published today: our new paper showing a 44-year trend of increasing global wildfire disasters (fatalities and economic losses) due to climate change-induced extreme weather. www.science.org/doi/10.1126/...

A bunch of toxic LA NIMBYs are whining about SB 79, the amazing housing bill the CA legislature passed recently. It's on the governor's desk, and reportedly he's getting cold feet. Hey @gavinnewsom.bsky.social, please have some spine on the most important issue in your state. Just sign it.

Another expert review of the science behind the endangerment finding, this time from health professionals. they conclude that CO2 emissions "pose a clear and indisputable danger to human health and well-being." drive.google.com/fil...

my takeaway from climate week nyc is that "climate storytelling" is a little too much "we must reimagine our deepest souls in relationship to mother nature and the moral abyss of the polycrisis into which we must now stare" and not enough "ok but get a heat pump"

Last week the German Meteorological Society warned that "the 3-degree limit could be exceeded as early as 2050". While not possible to fully rule out, the assessed warming scenarios we published in the IPCC AR6 report find this to be extremely unlikely.

On The Climate Brink, Kevin Trenberth writes about the undeniable science of extreme weather

When I say the US has bet its post-pandemic economy on AI while China has bet its on green energy, this is what I mean: Here, AI related companies account for 75% of S&P 500 returns since ChatGPT's launch. In China, green tech accounts for one quarter of GDP growth.