We have a new paper out today taking a fresh look at sea ice age, showing how this variable offers new insights into Arctic climate change: A Fair Assessment of Sea Ice Age Reduces Bias and Gives New Insight to Arctic Sea Ice Dynamics agupubs.onlinelibrary.wiley.com/doi/10.1029/...

@signeaaboe.bsky.social kicking off the Sea ice Age (SAGE) project webinar to discuss current challenges and opportunities in using age to monitor sea ice change. docs.google.com/forms/d/e/1F... #ESA #SeaIce

If you had the opportunity to educate the sustainable investing community about one fact, what would you want ensure it knew, above all else? My nomination: The large-scale, economy-wide asset devaluations that economists & climate scientists say will ensue if we fail to accelerate decarbonization.

Those late summer rains do make for a dramatic sky

very intense night in Greenland a few days ago. I say 'night' because this light lasted all night.

For this years Research days I'll be talking about climate change in Reisa national park in northern Norway. It's a protected area that is expected to see dramatic warming in the coming century:

#Wildfires in Spain have reached record emissions in just one week according to our #CopernicusAtmosphere data. Heatwaves & drought are fueling fires, forcing evacuations & worsening air quality hundreds of km away. 🔥 Read the article for details atmosphere.copernicus.eu/spain-below-...

Summer 2024 featured unprecedented warmth in the European Arctic, causing melting of 1 % of the total ice volume on Svalbard. Bad news is that in 2100 and even in the optimistic SSP1-2.6 emission scenario, 50% of the future summers will be warmer than 2024. www.pnas.org/doi/10.1073/...

one of the smart things that Newsom is doing here is implicitly calling out the insanity of how much Trump has been normalized by media by forcing them to think about what it looks like when somebody else does it

One Boston block was 94°F. Just a few streets away, it was 103°F. Hyperlocal heat data can pinpoint where cooling projects will save the most lives (and money). buff.ly/pgSujfI

World weather attribution rapid study on the two-week Fennoscandian heatwave is out. The key results do not surprise: 1) the heatwave was ∼2 °C hotter and 2) at least 10 times more likely due to climate change. www.worldweatherattribution.org/intense-two-...

By changing our diets now, we can avoid the food chaos that climate change is bringing, says @profpaulbehrens.bsky.social - This trajectory of climate-driven food price hikes – leading to social unrest and political decay – is not inevitable #climatecrisis theconversation.com/by-changing-...

Global datasets of black carbon emissions tend to be based on estimates of how much fuel is combusted incompletely. Comparing with actual measurements suggests these datasets have underestimated black carbon emissions in developing countries. 1/3

🌞 What makes a good summer? I’ve been thinking about that a lot lately — and decided to quantify it. Meet the Good Summer Index (GSI): a data-driven but human-centric score of summer quality, based on things people say they actually enjoy. Thread 👇

Yes. This map showing how children’s right to roam free has been removed over four generations always makes me sad.

We've had a gloriously warm and sunny summer in Bergen this year. You really need this break in a city where you know the heavy rain is just around the corner.

If you're interested in sea ice and how we can track its development, you may want to sign up for our 1-day seminar where we'll be talking about the breadth of ECVs for sea ice, new developments in tracking sea ice age, and the pitfalls and opportunities of climate model - observation comparisons.

CO₂ removal (CDR) deployments require materials and energy, which emit CO₂. That’s why we talk about net CDR. Even if CDR affects ecosystems, it’s likely minor compared to the significant negative impacts of climate change on ecosystems. So we should focus on the net ecosystem benefits of CDR.

🌡️ Not all hot nights are equal. We track “tropical nights” when temps never dip below 20 °C—but what if it’s already 20 °C at bedtime? I crunched ERA5 data for 5 European capitals. Let’s talk tropical 10 pm. 👇

If you're interested in sea ice and how we can track its development, you may want to sign up for our 1-day seminar where we'll be talking about the breadth of ECVs for sea ice, new developments in tracking sea ice age, and the pitfalls and opportunities of climate model - observation comparisons.

Thanks for the reminder @janemunday.bsky.social. Every summer, I repost this article DROWNING DOES NOT LOOK LIKE DROWNING. To date, I know of FOUR kids who were saved after someone who'd clicked on the link learnt how to spot actual drowning. Take time to read and pass on. slate.com/technology/2...

Do you have a PlayStation? If so, Climate Station has launched as a free immersive and compelling data-driven experience of our planet: blog.playstation.com/2025/06/18/c... (and @playstation.com have joined #ShowYourStripes!)

The Bank of England just raised the bar on climate risk supervision. Boards are now expected to own climate risk. Scenario analysis must be routine. Data quality and disclosures? Under scrutiny. What does it mean for the financial sector—and how can we help? #climaterisk #BoE #finance #governance

we’re getting evicted, it’s stupid, and I’m mad www.fastcompany.com/91333946/thi...

Interested in the risk of marine heatwaves along the Norwegian coast this summer? Listen to my colleague, Dr Langehaug, discussing the state of the art on the Fish n' Bits podcast: open.spotify.com/episode/0iok... @nansensenteret.bsky.social

~45% of US corn production is now used to make ethanol, mostly for mixing into gasoline. That's ~13% of all US crop land already used for energy production. Using some of the same land for solar panels would capture 50-100 times more energy per acre.

Kelvin-Helmholtz waves looking all the more dramatic for catching the evening light

📣 Job Vacancy 📣 The University of St Andrews is seeking to enhance its research strength in Statistics by appointing a new Chair in Statistical Ecology. Closing date 21/07/2025. www.vacancies.st-andrews.ac.uk/Vacancies/I/...

Europe is the fastest-warming continent, and the impacts of climate change here are clear: 🟠 2024 was the warmest year on record for Europe 🟠 Europe experienced the most widespread flooding since 2013 🟠 An estimated 42,000 people were affected by wildfires in Europe. Read more 👇

Ladies, gentlemen, this outstanding piece of #climate information is out. Welcome to the European State of the Climate 2024 #ESOTC2024 Explore it, bookmark it, come back to it and then come back again, because there’s more in it than you can imagine. climate.copernicus.eu/esotc/2024

Looking like a quite high risk of a marine heatwave in the northern aquaculture production zones this summer: seasonalforecastsfornorway.shinyapps.io/MarineHeatwa... #seasonalforecast #aquaculture #salmon #Norway

A tricky thing about modern society is that no one has any idea when they don’t die. Like, the number of lives saved by controlling air pollution in America is probably over 200,000 per year, but the number of people who think their life was saved by controlling air pollution is zero.

Time for the annual @nansensenteret.bsky.social getaway! Kicking off with a lively discussion of AI in the workplace

I have a very immediate appointment need for a junior PD position as a chapter scientist on the @ipcc.bsky.social Special Report on Climate Change and Cities. Initial appointment will be 6 months so I can appoint immediately but extendable to the two years of the report cycle. (1/2)

New paper: The future Barents Sea-A synthesis of physical, biogeochemical, and ecological changes toward 2050 and 2100 Very nice interdisiplinary Nansen Legacy effort, including @jakobdoerr.bsky.social @islarsh.bsky.social @khuongdinh.bsky.social doi.org/10.1525/elem...

Doug was a NSF program officer for a few of my projects before stepping into his role below. His loss is an example of the many negative impacts. I speak often on the value of collaboration and cost sharing to get the most bang for our buck. Losses like Doug’s work affect everyone in the U.S. 🧪

My colleagues' excellent work on reconstructing Arctic sea ice thickness back to 1992 using a hybrid Machine Learning - Data Assimilation approach is out now: tc.copernicus.org/articles/19/...

Neat idea

Dette er skremmande å lese - men dessverre sant. Eit mørke er i ferd med å senke seg over USA. www.theatlantic.com/ideas/archiv...

Spectacular #wildlife and views at South Georgia! #BIOPOLE2 @biopole.bsky.social @bas.ac.uk

Couple that with an already record low sea ice extent for this time of year!

That is a huge blocking predicted to form over NW Russia. Record-breaking in intensity (for the time of the year), with 500 hPa levels half a kilometre higher than normal. It's like a stone in a river that directs the warm, moist air flow from the North Atlantic towards the Arctic.

The Norwegian government has given up on dealing with electricity prices in Norway & has decided just to pay everyone's electricity bill (basically). There are far better & easier solutions, as @anders.energiogklima.no explains here (in Norwegian) www.energiogklima.no/meninger-og-... 1/

Poland has long had the reputation of Europe's climate laggard. Not anymore - Poland reduced the share of coal in its electricity mix from 95% in 2000 to 54% in 2024. Wind+solar are up from 0% in 2000 to 23% in 2024. Source is @ember-energy.org

Interesting deep dive (pardon the pun?) on the pursuit of super-deep geothermal. The potential is really jaw-dropping.

On that grim day for sciences (and for about everything else I believe in), I've spent my work time procras... making a new animation to introduce waves-in-ice modelling. Here is the result! 🌊❄️

New post on The Climate Brink from Zeke @hausfath.bsky.social about our climate future. With current policies, we’re on track for a bit less than 3C, with 2030 NDCs we’re on track for about 2.5C, and with net zero pledges we’re on track for a bit less than 2C. www.theclimatebrink.com/p/moving-awa...

Has the Atlantic Meridional Overturning Circulation (AMOC) weakened over the last decades? In our new study, we combine state-of-the-art CMIP6 models and observation-based estimates of the air-sea heat flux in the North Atlantic to show that the AMOC has not declined since the 1960s! 🌊

The brewing climate-driven housing crisis 👇🏻

The 2024 Arctic Report Card is in the Conversation. #Arctic #Climate theconversation.com/arctic-has-c...