While the world sometimes seems metaphorically on fire right now, global warming is still progressing as well. In 2025, global warming delivered the 3rd warmest year since measurements began. A modest step down from 2024's records, but still well above 20th century norms. 🧪🧵

Animation showing the uncertainty in annual temperature anomalies for 2025 (actually the half range of the eight datasets that follow) and eight maps showing the temperature anomalies from eight different datasets. THREAD 1/n youtu.be/GKZCr4eboGg

Ben Santer, an outstanding scientist and historically significant figure in the development of understanding of climate change, is relocating to the UK. Very much looking forward to him visiting the @metoffice.gov.uk to talk about our common research interests.

First NY Times veteran @jswartz.bsky.social transitions to teach journalism at the University of Texas, now former Washington Post Pulitzer winning climate reporter @chriscmooney.bsky.social moves to teach at the other UT, the one on Rocky Top. Both grew up on Gulf Coast. cci.utk.edu/blog/2026/01...

At ArcticNet's ASM 2025 in December I presented on some really troubling developments in Canada's premier weather and climate observing network. I'll share a couple highlights (or lowlights depending on your perspective) in this thread. /1

As the climate data for 2025 continues to be released, it's time to update various data visualisations. First - the global climate stripes for 1850-2025. A third darkest red stripe is added. The last 11 years have been the warmest 11 years on record. A sequence that is unlikely to be broken soon.

A small silver lining: Yes, NASA and NOAA did not do briefings for their global temp data sets released today. And they certainly do not emphasize the human causes. But they *did* release them. The work is still happening. data.giss.nasa.gov/gistemp/grap... www.ncei.noaa.gov/access/monit...

The gridding has been done with open access software from the @noc.ac.uk github.com/NOCSurfacePr...

Global mean temperature 2025: 1.44 ± 0.13 °C above the 1850-1900 average, based on a synthesis of eight international datasets. 2025 was the second or third warmest year on record. 2024 remains the warmest. That makes the past 3 years are the 3 warmest years on record. wmo.int/news/media-c...

That’s right, although it’s estimated that humans had already affected the climate by 1850 it becomes harder to estimate the global temperature as you go further back in time. There was a recent article by @chriscmooney.bsky.social about this. edition.cnn.com/2025/12/15/c...

2025 has been confirmed as the third warmest year on record, following 2024 and 2023, in a series stretching back to 1850. Data from the Met Office, @uniofeastanglia.bsky.social and @ncas-uk.bsky.social shows 2025 was 1.41 °C above the average for 1850-1900. Read more 👉 bit.ly/3NkfQH9

A mobile radiological unit developed by Marie Curie, November 1914 (BnF) With X-ray machines then only available in city hospitals far from the warfront, Curie equipped standard motor cars with X-ray machines that were powered by the car's engine. Curie herself drove one of these to the front. 🗃️

American soldiers embarking for Normandy at Southampton Docks on 4 July 1944, less than a month after D-Day. Between D-Day and the end of the Second World War, over two million American troops would pass through Southampton on their way to help liberate Europe from Nazi occupation.

Stop subsidizing fossil fuels and the renewables market will do good things for your country -just look at Uruguay

Published today in "Ocean Heat Content Sets Another Record in 2025", by Pan et al. Link: link.springer.com/article/10.1...

“Marine heatwaves represent one of the most urgent and least understood climate threats facing UK seas.” Dr Zoe Jacobs. Rising UK marine heatwave research challenges are outlined in new national roadmap that identifies 40 priority research questions. Read more here: noc.ac.uk/news/rising-...

Here's the EU's reaction to Trump administration formally pulling the US out of the UNFCCC and IPCC. But all eyes now on how/whether China chooses to seize this geopolitical gift from the US

On the left: 2 Oxford Street. Two Titanic crew members were staying here before the ill-fated maiden voyage. George Henry Hinckley was a third class steward and James Hutchinson was a vegetable cook. Sadly, they both died in the sinking. 1/5

Published today: Importance of beginning industrial-era climate simulations in the eighteenth century Defining pre-industrial to be 1750, rather than 1850, produces different (simulated) historical climate changes after 1850. Pre-1850 volcanoes & land use matter. iopscience.iop.org/article/10.1...

Dock Gate 4. Near here, in August 1914, the British Expeditionary Force embarked for France. Over the next four years, around eight million troops passed through Southampton. Next to the gate is the former docks post office with a tablet remembering the ‘Old Contemptibles’ who embarked here in 1914.

The scientific evidence is absolutely crystal clear: We are certain the world is warming because we're burning fossil fuels and putting more greenhouse gases in the atmosphere So we have to stop doing that We also need to adapt to the changes we've already caused www.channel4.com/news/uk-alre...

2025 was the warmest year on record for Central England in a dataset that starts in 1659. (Daily data available since 1772.) www.metoffice.gov.uk/hadobs/hadce...

It is likely that 2025 will be the warmest year on record for the UK. Why does this matter? Burning fossil fuels is warming the planet, including the UK, causing heatwaves to get hotter. For Central England this is happening 2x faster than the mean change. www.bbc.co.uk/news/article...

#OnThisDay in 1872, the expedition of HMS Challenger set sail from Portsmouth, travelling nearly 70,00 nautical miles and cataloguing over 4000 unknown species over 4 years. This pioneering expedition, organised by the Royal Society, laid the foundations of oceanography.

The importance of NCAR and the damage wrought by Trump administration actions is very well summarised by Ben Santer in this article @ueaenv.bsky.social @climateuea.bsky.social

Friends at NCAR, we're with you. @ncar-ucar.bsky.social is a trailblazer in community modelling driven not by idealogy, but by open science. We share all our code, thoughts, ideas. These can't be shut down. We'll fight and find every mechanism to support the ongoing CESM community.

It is hard to overstate how critical @ncar-ucar.bsky.social is to climate science in the US and around the world. It's the beating heart of our field. Generations of scientists have trained there, and almost everyone I know relies on deep collaborations with NCAR scientists. It's end is unthinkable.

📣 New estimates shed light on late-18th century temperatures! 🕰️🌡️🌎 New research provides the first global record from near-surface air temperature measurements, peering back in time to the late-18th century. Read more about it here: brnw.ch/21wYn3Z

As we move into the final days of the year, 2025 has just overtaken 2022 as warmest year-to-date for Central England. Given the forecast, it looks likely that 2025 will end up being the warmest calendar year for this region since records began in 1659. The top 3 warmest will be 2022, 2023 & 2025.

Article on the new GloSAT dataset and implications by @chriscmooney.bsky.social for @cnn.com edition.cnn.com/2025/12/15/c...

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 paper by @simonj1967.bsky.social @healionk.bsky.social on the second year data rescue activities in @maynoothuniversity.ie Geography methods class rmets.onlinelibrary.wiley.com/doi/10.1002/...

Recently, @berkeleyearth.org expanded our temperature database by integrating the HCLIM data set. nature.com/articles/s41... The additional data rescued by HCLIM helps improve early reconstructions, but doesn't fundamentally change the large uncertainties due to sparse sampling. 1/

I gave a talk yesterday about monitoring, reporting, and verification for marine carbon dioxide removal and you can watch it here at 2x speed if you wish. 🌊

Reform UK Ltd gets 92% of its funding from climate change deniers and fossil fuel corporate interests | Mark Cunliffe @markcunliffe76.bsky.social @centralbylines.co.uk

November 15, 1958 – Academic Paper on “Changes in Carbon Dioxide Content of Atmosphere and Sea Due to Fossil Fuel Combustion” submitted allouryesterdays.info/2022/11/14/n...

The 2025 update of the Global Carbon Budget is out.​​ While fossil CO2 emissions rise again and carbon sinks are weakened by climate change, deforestation emissions are down and many countries decarbonise their energy. No global emissions peak yet though. theconversation.com/the-worlds-c...

Looking for a PhD in climate science? Great opportunity to help modernise one of the iconic climate time series - Central England Temperature. Led by @timosbornclim.bsky.social, with myself and Met Office collaborators: www.uea.ac.uk/course/phd-d...

Happy birthday to the only two women with elements named after them on the periodic table: #MarieCurie & #LiseMeitner. As I do every year, I will once again repeat my proposal that November 7 should be International #WomenInSTEM Day! #histSTM #chemistry #physics #OnThisDay #OTD #PeriodicTable👩‍🔬🗃️📜

📣 #StateOfClimate Update 2025 is out now 🌡️ From January to August 2025, average temperature was +1.42°C hotter than pre-industrial level, on track to be second or third hottest year on record. 🔗 Press release: https://bit.ly/3LoawS9 🔗 Full report: https://bit.ly/4qZR52q

Should we start historical climate simulations in 1750 (or 1800) rather than 1850? Importance of beginning industrial-era climate simulations in the eighteenth century Ballinger, Schurer et al.: iopscience.iop.org/article/10.1...

A reminder of what happened last time a UK govt tried to reduce bills by "cutting the green crap" Analysis: Cutting the ‘green crap’ has added £22bn to UK energy bills since 2015 www.carbonbrief.org/...

Happy Halloween! Courtesy of the ocean techs at @miamirosenstiel.bsky.social

Southampton’s West Bay, early 1900s. Southampton West (now Central) railway station can be seen on the left. The bay disappeared when the land was reclaimed here in the 1920s and 1930s in order to create the vast Western Docks. 1/2

UK Marine Climate Change Impacts Partnership (MCCIP) has just published the latest rolling update on anthropogenic climate change effects on sea temperature 🌊🌡️. This update was led by NOC's Dr Richard Cornes. Read the full report here 👇 www.mccip.org.uk/temperature

Robert Lavers was tea dealer, grocer, and fish sauce manufacturer, with premises at 5 Prospect Place on Above Bar Street, opposite Commercial Road. In this 1835 advert, he boasts of his Lavers’ Celebrated Southampton Sauce. 📸: Hampshire Advertiser, 16 May 1835 1/5

Due to unstable access to #SSMIS data, we are suspending today the distribution of our #SeaIce concentration interim climate data record based on it (OSI-430-a). We advise all users to switch to our #AMSR2 based climate products. for more info: osi-saf.eumetsat.int/community/li...

The work on extending the calculation of normals for the land station data in GloSAT was done by @timosbornclim.bsky.social and his team at UEA

This is definitely something worthy of quantitative analysis and experiments. It is very hard to know otherwise how much of the error was due to the lack of weather balloons. Forecast failures happen, and tropical cyclones moving into the extratropics are a common source of these.