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khaustein.bsky.social
KarSteN Haustein
@khaustein.bsky.social
2.1K followers 1K following 370 posts
Human | Climate Scientist | Meteorologist | Stormchaser | Queer
@unileipzig | ex-@ecioxford | @S4F | YIMBY | he/him 🏳️‍🌈🏳️‍⚧️🦄 💕

#bekind #diversity #equality #empathy #inclusivity #fightfascism
#WakeTheFuckUp!! #TeamJoyResistance

https://thueringen-weltoffen.de
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khaustein.bsky.social
KarSteN Haustein @khaustein.bsky.social · Dec 26
2024 is almost history and the global temperature forecast for the remaining few days is rock solid now. Time to wrap up.

In most datasets, 2024 will be 0.1 degree C warmer than 2023. Also, 2024 will be the 1st individual year above the 1.5 degree Paris warming threshold in all datasets.

(1/10)
Graph with blue and red bars which represent temperature departures from the reference time period (1850-1900). the first year is 1850 and the last year (which coincides with the highest value) is 2024. graph with blue and red dots which represent temperature departures from the reference time period (1850-1900). the first year is 1850 and the last year (which coincides with the highest value) is 2024.
Reposted by KarSteN Haustein
michaelemann.bsky.social
"Dr Michael Mann on #COP30" | My conversation earlier today with witty and wise @petedominick.bsky.social for the #StandUpWithPete podcast: www.youtube.com/live/E7uXL9z...
Dr Michael Mann on COP 30 📱
YouTube video by Stand Up! With Pete
www.youtube.com
November 26, 2025 at 4:45 PM
Reposted by KarSteN Haustein
natcomms.nature.com
Although #SouthernOcean #MeridionalCirculation intensifies and shifts poleward under warming periods, the #EddyCompensation in the past and future is distinct due to enhanced #AntarcticBottomWater formation and subduction branch #Ventilation. @ucriverside.bsky.social
www.nature.com/articles/s41...
Evolving Southern Ocean overturning in warming climates - Nature Communications
Although the Southern Ocean Meridional Circulation intensifies and shifts poleward under warming periods, the eddy compensation in the past and future is distinct due to enhanced Antarctic bottom wate...
www.nature.com
November 26, 2025 at 7:15 AM
Reposted by KarSteN Haustein
pedalandtringtring.bsky.social
pedalandtringtring.com/2025/11/26/u...
'UTRECHT IS THE BEST CYCLING CITY IN THE WORLD': COPENHAGENIZE INDEX 2025 REPORT - Pedal and Tring Tring
Utrecht ranks no.1 & is the best cycling-city in the world according to the latest Copenhagenize Index 2025 report
pedalandtringtring.com
November 26, 2025 at 10:32 AM
Reposted by KarSteN Haustein
nataschastrobl.bsky.social
Ich halte es für einen großen Fehler der FPÖ das Monopol auf Systemwechsel zu geben. Anders muss nicht autoritär sein. Anders kann auch besser sein. So toll ist der Status Quo nicht.
November 26, 2025 at 10:01 AM
Reposted by KarSteN Haustein
ambio-journal.bsky.social
New Publication:
Resilience and regeneration for a world in crisis

Open access link: link.springer.com/article/10.1...
Resilience and regeneration for a world in crisis - Ambio
Both resilience and regeneration are relevant concepts in sustainability science. Resilience thinking has led to improved understanding of cross-scale cycles of growth and renewal, regime shifts, and ...
link.springer.com
November 26, 2025 at 9:18 AM
Reposted by KarSteN Haustein
davidho.bsky.social
The Court of Justice of the European Union (EU) ruled that EU nations had to recognise same-sex marriages recorded in another member state, following a complaint by two Poles married in Germany whose marriage was not recognized in Poland.
Top court rules EU nations must mutually recognize same-sex marriages
The Court of Justice of the European Union said in a statement on Tuesday that any refusal to do this 'is contrary to EU law' and 'infringes not only the freedom to move and reside, but also the funda...
www.lemonde.fr
November 25, 2025 at 5:46 PM
Reposted by KarSteN Haustein
drtomharris.bsky.social
The 2025 Lancet Report on Health and Climate Change and the recent Cradle to Grave Report spell out the tremendous harm and suffering caused by fossil fuel burning and resulting climate changes. Millions are dying every year.
drtomharris.substack.com/p/breathless...
#climatechange #health
Breathless: The Toll of Fossil Fuels and a Changing Planet
The 2025 Lancet Report on Health and Climate Change and the recent Cradle to Grave Report spell out the tremendous harm and suffering caused by fossil fuel burning and resulting climate changes.
drtomharris.substack.com
November 26, 2025 at 9:27 AM
Reposted by KarSteN Haustein
glenpeters.bsky.social
Has climate policy* worked?

There is an argument that CO2 per unit GDP has not accelerated in 50 years (top left).

This term is made of two componets:
* Energy per GDP (bottom left) which has not changed
* CO2 per Energy (top right), this is where the action is

1/
November 26, 2025 at 9:18 AM
Reposted by KarSteN Haustein
drkatemarvel.bsky.social
I really wish we'd stop calling them climate "skeptics" or "vaccine skeptics", if you jump off a cliff we don't call you a "gravity skeptic"
November 25, 2025 at 8:18 PM
Reposted by KarSteN Haustein
meteoleipzig.bsky.social
New paper alert: b.tellusjournals.se/articles/10....

Aerosols have an actual warming effect in the Arctic in winter: Changed dynamics via shift in the jet stream position (which in turn projects on the Arctic Oscillation index —> more positive)

@jquaas.bsky.social @khaustein.bsky.social
Exploring the Sensitivity of Arctic Winter Climate to Aerosol Loading as Simulated in CMIP6 | Tellus B: Chemical and Physical Meteorology
b.tellusjournals.se
November 25, 2025 at 2:19 PM
Reposted by KarSteN Haustein
mdtremblay.bsky.social
Some good news: Cycling journeys up by 43% in London, report finds www.bbc.com/news/article...
Cycling journeys up by 43% in London, TfL report suggests
Cycling journeys have increased to more than 1.5 million daily this year, according to a new report.
www.bbc.com
November 25, 2025 at 7:39 AM
Reposted by KarSteN Haustein
janrosenow.bsky.social
Electrification + efficiency — not rolling back climate policy — is the real path to a competitive European industry.

High fossil fuel prices hit industry hardest, not the Green Deal. Undermining clean-energy commitments would only push investment elsewhere.

euobserver.com/green-econom...
Why electrification, not repealing green laws, will save Europe's industry
According to Oxford professor of energy Jan Rosenow, rapid electrification of Europe's industry, not rolling back the EU's Green Deal, will save European industry.
euobserver.com
November 25, 2025 at 9:51 AM
Reposted by KarSteN Haustein
ecioxford.bsky.social
Global trade could lose $14B/yr from disruptions at maritime chokepoints like the Suez and Bab el-Mandeb. New ECI study shows how conflict, piracy & extreme weather ripple through supply chains. By Dr Jasper Verschuur, Dr Johannes Lumma & Prof Jim Hall.

➡️https://tinyurl.com/96amj8sz
November 25, 2025 at 9:47 AM
Reposted by KarSteN Haustein
brenttoderian.bsky.social
A huge 89% majority of global people [56% even in the United States] want stronger action to fight the #ClimateCrisis, but mistakenly believe they’re in a minority.

People want action. Smart cities are taking action. Nations should support city action.

#ActionStartsHere @mayors4climate.bsky.social
Activate climate’s ‘silent majority’ to supercharge action, experts say
Making concerned people aware their views are far from alone could unlock the change so urgently needed
www.theguardian.com
November 24, 2025 at 10:18 PM
Reposted by KarSteN Haustein
November 2025 will end in Europe with temperatures again significantly above the 1981–2010 climatological reference period.
In the Alps, the marked anomalies of both very warm and very cold spells are expected to balance out, particularly when compared to the more recent 1991–2020 reference period
November 25, 2025 at 9:40 AM
Reposted by KarSteN Haustein
brenttoderian.bsky.social
Any political “leader” still selling the obviously false choice between #ClimateAction and “the economy” is just reminding us that they clearly don’t understand either the climate crisis OR the economy.

Or they’re cynically hope that WE don’t understand the difference.

Or both.
Hurricane Erin from space La wildfires Flooding in Spain Flooding in Calgary
November 25, 2025 at 7:02 AM
Reposted by KarSteN Haustein
brenttoderian.bsky.social
ICYMI: “In the era of the climate crisis, politicians campaigning against bike-lanes aren’t fit for office.”— @taylornoakes.com in @cultmtl.com

Also in an era of worsening urban traffic, pollution, city noise, exploding public costs, competition among cities, & not nearly enough space in cities.
In the era of the climate crisis, politicians campaigning against bike lanes aren’t fit for office
Amid the climate crisis, politicians campaigning against bike lanes — as in Montreal municipal election campaign — aren’t fit for office.
cultmtl.com
November 23, 2025 at 7:52 PM
Reposted by KarSteN Haustein
brenttoderian.bsky.social
Hey Europe, you actually need to be a lot stronger than you’re being. This is a test for everyone.
November 24, 2025 at 7:16 AM
Reposted by KarSteN Haustein
americanfietser.bsky.social
It turns out that when you actually build safe, beautiful places for people, nobody cares about the politics. They just show up because it’s a great place to be.
November 23, 2025 at 11:43 PM
Reposted by KarSteN Haustein
zacklabe.com
The 12-month running mean global temperature anomaly continues to fall from its peak (temporary), which is mostly in response to cooler conditions over the equatorial Pacific Ocean during the last year (weak La Niña state).

➡️ Graphic available by zacklabe.com/climate-chan... 🌊⚒️🧪
Line graph time series of a 12-month running mean of global mean surface temperature anomalies from 1979 through October 2025. There is a long-term increasing trend and large interannual variability on this graph. Anomalies are computed relative to a 1991-2020 baseline. Blue shading is shown for below average anomalies, and red shading is shown for above average anomalies.
November 24, 2025 at 1:44 AM
Reposted by KarSteN Haustein
ianhall.bsky.social
Extreme day-to-day temperature swings are becoming more frequent and intense due to Global warming, impacting human health, ecosystems, and resilience.

By 2100, these changes could increase by 17%, affecting 80% of the global population.

www.nature.com/articles/s41...
Global warming intensifies extreme day-to-day temperature changes in mid–low latitudes - Nature Climate Change
Climate change is expected to lead to higher day-to-day temperature variability in mid- to low latitudes. Here the authors show that extreme day-to-day temperature changes have distinct impacts on hum...
www.nature.com
November 24, 2025 at 5:44 AM
Reposted by KarSteN Haustein
yarwanaw.bsky.social
November 23, 2025 at 12:51 AM
khaustein.bsky.social
Another classic for pluralistic ignorance (fueled by awfully biased media reporting). Alas, we are far far away from a just and sustainable mobility transformation which would allow people to travel without a car. Instead we keep forcing many people to drive in most places #motonormativity #carbrain
ianwalker.bsky.social Prof. Ian Walker @ianwalker.bsky.social · 2d
Off to Leeds later, to speak at the @teammodeshift.bsky.social annual conference tomorrow. Amongst much else, I'll be sharing this graph, based on our 2025 paper.

Almost everybody thinks it's important to be able to travel without a car, but they underestimate how much everyone else agrees
A graph showing the 89% of people agree that it's important to be able to travel without a car, and only 4% disagree. But the same people think that only 59% of friends and family agree, and that 23% of them disagree
November 24, 2025 at 10:02 AM
Reposted by KarSteN Haustein
climateadam.bsky.social
I will never stop being horrified by our (at best) ambivalence to the suffering and death of desperate and destitute people
zoejardiniere.bsky.social Zoe Gardner @zoejardiniere.bsky.social · 2d
Today is the 4th anniversary of the worst ever tragedy in the Channel.

At least 27 men, women & children drowned in the freezing water, & 4 more have never been found.

Since then, neither we nor the French have done a thing to offer people in this situation with real solutions.
November 24, 2025 at 9:09 AM
Reposted by KarSteN Haustein
ketanjoshi.co
"The entire financial system, including government bonds and mortgages, is premised on the idea that tomorrow will look something like today. In a world that’s 3 degrees warmer, it assuredly will not"

@peterbrannen.bsky.social in @theatlantic.com -->>

www.theatlantic.com/science/2025...
“In the United States, just 3 degrees Celsius of warming conditions in simulations tend to be hotter—when humidity is factored in—than heat waves in North Africa today,” the Purdue climate scientist Matthew Huber wrote in the Bulletin of the Atomic Scientists. “These heat waves of the future could devastate US livestock yields, if they don’t kill the animals outright.” Humans, being animals, would also be killed by the heat. One recent study showed that in a 3 degree–warmer world, deaths resulting from a week-long exceptional heat wave, like the one that struck Europe in 2003, would rival peak-COVID mortality rates, killing 32,000 people in Europe.
November 23, 2025 at 10:05 PM