Sign in

Ola Kalén

@olakal.bsky.social
301 followers 458 following 47 posts

PhD Physical Oceanography | Sea Level Rise | Climate change | Polar Science | Views my own

PostsRepliesMedia
Reposted by Ola Kalén
Melaine Le Roy @subfossilguy.bsky.social · 01/10/2026
The last 5 years we entered an Era of extreme ice loss in the Alps! 🧊🔥 Over this period, 20% of initial ice volume has gone! 📈 This is evidenced here on Aletsch Gl. (2,900 m asl), a place where the ice shouldn’t melt to maintain glacier in balance! ⚖️ 📷 @matthias-huss.bsky.social
04722
Ola Kalén @olakal.bsky.social · 11/09/2026
Yes, worth a read. We're messing with the function of the Southern Ocean, scary stuff...
061
Ola Kalén @olakal.bsky.social · 11/09/2026
Background study: www.science.org/doi/epdf/10....
science.org
Enhanced carbon loss in the Southern Ocean under mitigation scenarios
Reader environment loaded
194
Ola Kalén @olakal.bsky.social · 06/09/2026
141
Ola Kalén @olakal.bsky.social · 06/09/2026
031
Reposted by Ola Kalén
Kjell Vowles @kvowles.bsky.social · 31/08/2026
Fem tankar efter klimatdebatten I SVT igår (fortsätter i kommentarsfältet): #swepol #klimat #svtdebatt 1. Det är beklämmande att det bråkas om huruvida utsläppen har gått upp eller ner under mandatperioden, snarare än hur stor del av utsläppskakan som har ätits upp.
15423
Reposted by Ola Kalén
Ola Spännar @olaspannar.bsky.social · 27/08/2026
Himalayas glaciärer smälter snabbt pga den globala uppvärmningen orsakad av våra utsläpp. Nu har en glaciär kollapsat och orsakat ett skred som tagit tusentals människors liv. Samtidigt i Sverige domineras valrörelsen av "plånboksfrågor" www.svt.se/nyheter/inri...
SVT
Kollapsande glaciär bakom katastrofen i Nepal
- Experten om skredet: Kanske flera tusen döda
- Extrem förödelse
612152
Reposted by Ola Kalén
George Monbiot @georgemonbiot.bsky.social · 27/08/2026
People can "just adapt" to a changing climate, a thousand rightwing voices keep telling us. Either they lack imagination or they don't care. Try "adapting" to this. www.theguardian.com/world/2026/a...
theguardian.com
Nepal flash flood: more than 1,500 missing, mostly tourists, after disaster kills at least 165 at Tibet border
Entire populated areas swept away after glacial collapse causes catastrophic flood in mountainous region popular with trekkers and pilgrims
20243781811
Reposted by Ola Kalén
Technodromen @technodromen.bsky.social · 24/08/2026
Om allt bildsattes på samma sätt som klimatkrisen 😇
Skärmdump från DN.se, fast med utbytt bild.
Titel: "Varnar föräldrar: Unga berusar sig på handsprit"
Bild: Fin sommarkväll med lyxiga drinkar med vänner.
322670
Reposted by Ola Kalén
Zack Labe @zacklabe.com · 23/08/2026
🚨 Preliminary daily data shows we just broke the all-time highest global sea surface temperature in this record... Download high-resolution graphic at zacklabe.com/climate-chan.... This data (extrapolar ocean) is provided by @copernicusecmwf.bsky.social ERA5. 🌊
Graph showing daily global mean sea surface temperatures for 2026. This is also compared to the daily data from the 1981-2010 average and 1991-2020 average. Annotations are also shown to the current year with the other years from 1940 to 2026. There is a seasonal cycle. There is a long-term warming trend. 2023 and 2024 are also indicated, which were the warmest years on record. Data is from ECMWF ERA5 reanalysis and updated through 21 August 2026.
14456258
Ola Kalén @olakal.bsky.social · 19/08/2026
Men vi har möjlighet att bromsa hastigheten på uppvärmningen om utsläppen minskas snabbt nu. Det skulle medföra att både natur och samhälle har större möjligheter till anpassning.
000
Ola Kalén @olakal.bsky.social · 19/08/2026
Utsläppen som skett från industrialiseringens början fram till nu medför att havens temperatur kommer vara förhöjd under *flera tusen år* även om de fossila kranarna skulle stängas av idag.
En varm sommarkväll vid Östra Gotlandsbassängen, Östersjön, juni 2024.
110
Ola Kalén @olakal.bsky.social · 19/08/2026
"Nu visar en ny studie att det är klimatförändringen som är orsaken till havens höga temperaturer". Fossila bränslen är huvudorsaken till den här katastrofala utvecklingen, omställningen bort från olja, gas och kol måste ta fart nu. www.smhi.se/nyheter/nyhe...
smhi.se
Klimatförändringen ligger bakom höga havstemperaturer i södra och västra Europa
Marina värmeböljor noterades i Östersjön redan i början av juni – och under juli uppmättes rekordhöga temperaturer i havet globalt. Nu visar en ny studie att det är klimatförändringen som är orsaken t...
136
Reposted by Ola Kalén
Ketan Joshi @ketanjoshi.co · 18/08/2026
An endless daily stream of news stories detailing new deals between the fossil fuel industry and the tech industry. If you are one of the people still insisting that "data centres help the energy transition" or "AI will solve climate change", you have formally run out of excuses or defences.
List of recent energy and data-center news headlines about power plants and on-site generation — Blue Energy/GE Vernova Hitachi, Fermi/Hillcore, Siemens Energy, SpaceX, and Hyundai Heavy Industries — shown with thumbnails, August 2026 dates, and author Zachary Skidmore.News listing page of headlines about gas-powered data centers and related suppliers, each entry with a thumbnail, date and author — sample headlines include Amazon acquiring an 8,000‑acre site and AWS eyeing a 4.5GW plant.News site list of recent data‑center headlines with thumbnails and bylines: Jet.AI buys 26% of Alberta developer StratGrid; a company confirms a fourth SpaceXAI data center in Memphis; Veolia to run a 350MW Ohio microgrid; PowerPlay AI plans 400MW in Texas; Innio wins 1.1GW order.Webpage screenshot showing a vertical list of news headlines about large-scale data center energy projects—natural gas, nuclear, and climate initiatives—with small thumbnail images, publication dates, and author bylines.
014150
Reposted by Ola Kalén
James Dyke @jamesgdyke.info · 07/08/2026
"You often hear: another world is possible. Well I am here telling you that another world is inevitable. We either decide to stop burning fossil fuels or the Earth system will stop us. We are well beyond incremental, so-called policy relevant pathways." www.technosphere.earth/climate-chan...
technosphere.earth
Climate change must not disrupt business as usual
Don't believe the hype - we are still firmly on course towards climate catastrophe
413154
Reposted by Ola Kalén
Researchers' Desk @researchersdesk.bsky.social · 04/08/2026
"Vi står inför ett val som kommer att påverka Sveriges, och hela världens framtid långt bortom de närmaste fyra åren. Rösta på klimatet. Rösta på ansvar. Rösta på de partier som tar forskningen på allvar och som vill att Sverige ska vara en del av lösningen, inte problemet."
aftonbladet.se
Klimatförändringarna går fortare än forskarna trott
Klimatförändringarna går fortare än forskarna trott
02513
Reposted by Ola Kalén
Hannes Jansson @hannesjsson.bsky.social · 04/08/2026
Majoriteten av dessa åtta fossilföretag är europeiska: Shell och BP 🇬🇧, Equinor 🇳🇴, ENI 🇮🇹, Total 🇫🇷. Under Q2 2026 tjänade de omkring 25 miljarder dollar. De behöver ta betalningsansvar för konsekvenserna av sin samhällshotande verksamhet.
theguardian.com
Revealed: major oil firms make $93bn profits amid war and climate crisis
Iran conflict windfall over three months reignites calls for companies ‘cashing in on human misery’ to pay for environmental damage
02610
Reposted by Ola Kalén
David Roberts @volts.wtf · 04/08/2026
Don't look now, but the world has now installed 3TW of solar. Took 10 years to get from 100GW to 1TW. Less than 3 years to get to 2TW. Less than 2 years to get to 3TW. Analysts expect *9TW* by 2036.
bloomberg.com
The World Crossed a Major Solar Milestone. No One Noticed
The next phase of the boom may reveal a shift in who is gaining access to the technology.
11950381601
Reposted by Ola Kalén
Damian Carrington @dpcarrington.bsky.social · 04/08/2026
BP profits more than double to $5.7bn in three months as Iran war sends oil prices soaring - "While BP banks enormous profits, millions of households are paying the price" #energycrisis #climatecrisis www.theguardian.com/business/202...
theguardian.com
BP profits more than double as Iran war sends oil prices soaring
Energy company’s $5.73bn quarterly profits come after Shell posted second highest quarterly earnings on record
19201106
Ola Kalén @olakal.bsky.social · 04/08/2026
Chockerande hög global medeltemperatur i havet nu, drivet av den accelererande klimatuppvärmningen och vad som kan komma att bli den kraftigaste El Niñon någonsin uppmätt. Fler och dödligare värmeböljor, skogsbränder och översvämningar är att vänta så länge vi fortsätter använda fossila bränslen.
Graf visar avvikelse från långtidsmedel av global yttemperatur i havet. https://pulse.climate.copernicus.eu/
011
Reposted by Ola Kalén
Jeannette Eggers @jeannetteeggers.bsky.social · 03/08/2026
Tillsammans med många andra forskare kommer jag att gå med i demonstrationståget på #denstoraklimatdemonstrationen i Stockholm 23 augusti. Vi behöver visa att vi är många som vill ha en klimatpolitik som möjliggör drägliga liv för våra barn och barnbarn. Tillsammans höjer vi våra röster.
aftonbladet.se
216 forskare: Backar klimatdemonstrationen
216 forskare: Backar klimatdemonstrationen
311136
Reposted by Ola Kalén
Researchers' Desk @researchersdesk.bsky.social · 03/08/2026
Researchers' Desk har granskat riksdagspartiernas klimatambitioner inför valet. Miljöpartiets ambitioner ger de lägsta utsläppen, följt av Vänsterpartiet. researchersdesk.se/media/pages/...
56025
Reposted by Ola Kalén
Prof Julia Steinberger 🌹🌱🌍 #ClimateAction #Fightfascism @jksteinberger.bsky.social · 31/07/2026
I really need everyone to remember that the fossil fuel industry knew-knows exactly the climate hell we now inhabit, and are determined to make it FAR worse. That's because they have decided our lives are worth far less than their profits. We are not angry -or organised- enough.
Guardian article on climate responsibility for Europe wildfiresSupran et al 2023 Science article on Exxon's climate models.Supran et al 2023 Science article on Exxon's climate models.
16563255
Reposted by Ola Kalén
Prof Friederike Otto @frediotto.bsky.social · 31/07/2026
A succession of heatwaves and very dry conditions - both driven by human-induced climate change, fueld the severe wildfires in Spain and France - new @wwattribution.bsky.social study www.worldweatherattribution.org/climate-chan...
Map of Southern France and Northern Spain with the burnt area in July highlighted as red polygons and the study areas around Madrid and Bordeaux outlined.
111453
Reposted by Ola Kalén
Prof. Stefan Rahmstorf @rahmstorf.bsky.social · 31/07/2026
#GlobalHeating greatly increases #wildfire risk. That‘s been established scientifically for a long time (see IPCC reports) but has now been shown again for the current fires 🔥 in France and Spain in a new World Weather Attribution study. www.worldweatherattribution.org/climate-chan...
worldweatherattribution.org
Climate change increases likelihood of compounding drivers of severe wildfire conditions in France and Spain – World Weather Attribution
3252116
Reposted by Ola Kalén
Ola Spännar @olaspannar.bsky.social · 29/07/2026
Europa: Hjälp vi brinner upp! De fossila utsläppen orsakar extremhetta som skapar de värsta skogsbränderna nånsin Sverige:
Svantesson: Skattesänkning på bensin gör mig stolt
1317664
Reposted by Ola Kalén
Dr. Genevieve Guenther (she/they) @doctorvive.bsky.social · 28/07/2026
The Prime Minister of Spain: “This climate emergency is exceeding every threshold and scale that scientists have long warned all of Spain and Europe about.” This is the realistic climate discourse the world needs. www.nytimes.com/2026/07/28/w...
"These are difficult hours," Prime Minister Pedro Sánchez said
Monday afternoon during a news conference in Castellón, on Spain's eastern coast, where a new fire raged and forced thousands of new evacuations.
In the face of what his government has called the largest fires in the country's history, and after a summer of record-breaking heat waves, he called for a national pact with all Spain's political parties to work together to prevent blazes that he attributed to climate change.
"This climate emergency is exceeding every threshold and scale that scientists have long warned all of Spain and Europe about," he said.
6563300
Reposted by Ola Kalén
Daniel Swain @weatherwest.bsky.social · 27/07/2026
In recent weeks, there has been a remarkable surge in large, intense, fast-moving, and unfortunately in many cases destructive/deadly wildfires in multiple Northern Hemisphere regions spanning a wide range of climates & ecologies, but they all share one key commonality. [Thread]
10520231
Reposted by Ola Kalén
Frida Hylander @fridahylander.bsky.social · 26/07/2026
Skriver om att leva i och med klimatkrisen. Ett gnagande sår som aldrig lämnar en ifred. Som finns där sida vid sida med allt det fantastiska i livet och världen.
supermiljobloggen.se
Frida Hylander: ”Klimatkrisen gnager i mig, ett ständigt sår”
KLIMATKÄNSLOR:: Trots semester och fina upplevelser med familj och vänner går det inte att glömma klimatkrisen. Den är som ett sår som aldrig slutar vara, skriver veckans krönikör Frida Hylander.
812140
Reposted by Ola Kalén
James Dyke @jamesgdyke.info · 25/07/2026
Limiting warming to 1.5°C was initially motivated by efforts to protect small island nation states from disastrous sea level rise. It's clear we have greatly underestimated loss and damage to the world's richest nations. www.theguardian.com/world/2026/j...
theguardian.com
More than 200,000 people flee or lock down as wildfires sweep France and Spain
‘Highly unpredictable’ blaze forces evacuation of Cap Ferret on French coast and Spain declares national emergency
47646
Reposted by Ola Kalén
Nature @nature.com · 23/07/2026
The El Niño climate pattern that is strengthening in the Pacific Ocean is on track to be the largest one in at least 150 years, researchers said today at a briefing. go.nature.com/4fkayak
go.nature.com
This El Niño is set to be the largest on record by a ‘mind-blowing margin’
Forecasters predict that the monster climate pattern will combine with global warming to push global temperatures in 2027 to new heights.
212066
Reposted by Ola Kalén
Eric Holthaus @ericholthaus.com · 16/07/2026
If only a dedicated group of scientists had warned us about the record heat, torrential flooding, continental scale wildfires, and apocalyptic orange skies
693257891
Reposted by Ola Kalén
David Ho @davidho.bsky.social · 15/07/2026
The extreme weather we have now is not the new normal. It’s going to keep getting worse as long as we continue to burn fossil fuels.
theguardian.com
‘Unprecedented’ changes in UK climate are normalising extremes, report says
Annual State of the UK Climate analysis finds last four years in UK are in top five hottest on record
14507249
Reposted by Ola Kalén
Zeke Hausfather @zekehausfather.com · 13/07/2026
With all the July model runs now in, it is very likely that 2026 will see the largest El Niño event since records began in the late 1800s – and potentially by a truly mind-blowing margin. The median estimate is now 3.6C, roughly 0.8C hotter than the prior record (2.75C). www.theclimatebrink....
15514343
Reposted by Ola Kalén
Natursidan.se @natursidan.bsky.social · 02/07/2026
Vi befinner oss i en period av extrem värme i haven och vi kan räkna med att det kommer bli ännu värre. Så höga temperaturer ökar risken för orkaner, extrema regnfall, översvämningar, issmältning och havsnivåhöjning – förutom påverkan på havens ekosystem. Läs mer: www.natursidan.se/nyheter/varm...
natursidan.se
Värmerekord även till havs: ”Det är en ny, okänd fas”
Vi är i en period av rekordvärme för våra hav och vi kan räkna med att det kommer bli ännu värre. Så höga temperaturer i våra hav ökar risken för orkaner, extrema regnfall, översvämningar, issmältning...
26225
Reposted by Ola Kalén
Daniel Swain @weatherwest.bsky.social · 02/07/2026
Statistics like this are genuinely shocking, but so too has been the intensity and duration of this extraordinary heatwave in Europe. As a society, we have greatly underestimated--and therefore underpriced--the cost of highly extreme heat events in a rapidly warming world.
5424150
Reposted by Ola Kalén
Australian Antarctic Program Partnership @antarctic.bsky.social · 30/06/2026
CLIMATE CHANGE ATTRIBUTION: "the first study to directly attribute the changes of a major Antarctic outlet glacier to the activities of humans." More than 1/3 of ice loss from the West Antarctic Ice Sheet is from Pine Island Glacier, one of the single biggest contributors to global sea level rise.
1229
Reposted by Ola Kalén
Center for Climate Integrity @climateintegrity.org · 29/06/2026
This is the future Big Oil built for us. Fossil fuel companies knew decades ago that their products would drive increasingly severe and frequent heatwaves, droughts, and wildfires, but lied to protect their own profits at the expense of public health and safety. The public deserves accountability.
usatoday.com
Dangerous, record-smashing heat wave to scorch millions
A prolonged, dangerous heat wave will intensify across most of the central to eastern U.S. this week, the National Weather Service said.
14131551495
Reposted by Ola Kalén
Prof Friederike Otto @frediotto.bsky.social · 26/06/2026
Europe's worst heatwave so far, in terms of heat stress measures and temperatures - brought to you by fossil fuels. New @wwattribution.bsky.social study showing how such deadly heat became possible in only a few decades. www.worldweatherattribution.org/fossil-fuel-...
A map of Europes with dots for all 854 cities analysed, pink dots for the cities that broke humid heat records, grey dots elsewhere. Pink dots conentrated over Southern UK, Germany, Poland and Benelux.
231189665
Reposted by Ola Kalén
Dave Vetter @davidrvetter.bsky.social · 25/06/2026
Right now I'm in the epicentre of the heatwave, in southwest France, where the brutality of the heat has ground life to a halt. And I have to keep reminding myself: this is only the beginning.
The Sun dips below the horizon over the Atlantic.
12643264
Reposted by Ola Kalén
Prof. Stefan Rahmstorf @rahmstorf.bsky.social · 15/06/2026
Are we willing to invest just five cents per person per year to maintain one of the world’s most important climate monitoring systems? That provides crucial information about a potentially existential risk for Europe?
6300146
Reposted by Ola Kalén
Springer Nature @springernature.com · 11/06/2026
Human-driven sea-level rise has quadrupled frequency of extreme coastal sea-level events since 1900. Findings suggest climate change has already altered coastal flood risk and highlights need to integrate these changes into adaptation and risk management strategies: @natclimate.nature.com 🧪
spklr.io
Human-driven sea-level rise has quadrupled the frequency of coastal sea-level extremes since 1900 - Nature Climate Change
Sea-level rise in conjunction with storm surge and tidal variations leads to extreme sea levels that threaten coastal systems. Here the authors use tide-gauge data and models to quantify how anthropogenic climate change has increased the risk of these extreme sea-level events since 1900.
0147
Reposted by Ola Kalén
Micah @rincewind.run · 12/06/2026
a little on the nose for capitalism that the world’s first trillionaire is a nazi conman
4898762570
Reposted by Ola Kalén
Adam Morton @adammorton.bsky.social · 13/06/2026
Antarctica’s west coast missing an area of sea ice the size of France as temperatures peak 20C above average - by @readfearn.bsky.social www.theguardian.com/world/2026/j...
theguardian.com
Antarctica’s west coast missing an area of sea ice the size of France as temperatures peak 20C above average
A vast area of the Bellingshausen Sea should be covered by sea ice by now, with one expert calling the loss of ice ‘depressing’
26337
Ola Kalén @olakal.bsky.social · 10/06/2026
Here is a more fitting illustration of a heatwave: Patient treated for heat stroke using combined cooling methods (ice, water spray, and compressed air). Pic by Flavio Gaudio (2015).
Combined cooling methods. Removal of the patient’s
clothes aids in heat loss through radiation. Cubed
ice applied by basin over and alongside the patient’s body
melts and cools through conduction. Flexible hosing directs
compressed air at the patient’s wet skin–achieving cooling
through evaporation plus convection. Spray bottles may be
used to keep the skin continuously wet during cooling; and
large room fans may be used instead of compressed air.
Photograph by Flavio Gaudio, MD, 2015.
021
Ola Kalén @olakal.bsky.social · 08/06/2026
Hur många svenska politiker agerar i enlighet med kunskapen att våra handlingar nu får effekter över tusentals år? Om vi fortsätter som idag kommer global temperatur bli +3-4 grader år 3000 och ungefär dubbelt så högt i Sverige. agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com
We Are in the Anthropocene—Now What?
The Anthropocene's enormous consequences are of long-term nature, the slow pace of recovery currently under-appreciated among the public The smallest unavoidable residual emissions (e.g., from fo...
1215
Ola Kalén @olakal.bsky.social · 08/06/2026
www.theguardian.com/environment/...
theguardian.com
Anger is most powerful emotion by far for spurring climate action, study finds
Link to climate activism is seven times stronger for anger than it is for hope, say Norwegian researchers
081
Reposted by Ola Kalén
David Ho @davidho.bsky.social · 08/06/2026
Happy World Ocean Day! The ocean is the heart of our life support system, without which we’d all be dead. It’s taken up >90% of the heat from global warming and 30% of our CO₂ emissions. In return, we give it 11 million tonnes of plastic annually, which animals ingest and also become entangled in.
theatlantic.com
Oceans Awash in Plastic Waste
On a day that many might be headed to the beach, take a moment to consider some of the widespread impacts of all of that plastic, and the ongoing efforts to clean it up.
8465233
Reposted by Ola Kalén
Alejandra Caraballo @esqueer.net · 07/06/2026
We need ~30 years of data from the AMOC to be able to finally determine if it's actually collapsing. We're at 20 years of data. Removing this now means we can't definitively determine a potential AMOC collapse that could result in substantial climate disruptions. www.livescience.com/planet-earth...
livescience.com
Tump administration to remove 900 deep sea monitoring instruments that would have studied the collapsing Atlantic current
The Ocean Observatories Initiative has been collecting data on physical, chemical, geological and biological conditions in the Atlantic and Pacific Oceans for the past decade
541227574
Reposted by Ola Kalén
PIK_climate @pik-potsdam.bsky.social · 04/06/2026
A major US deep-ocean monitoring network is being scaled back. “Ongoing monitoring of the ocean is critical, especially now. Concern in the oceanography community about major ocean current changes ahead is large,” says PIKs @rahmstorf.bsky.social. edition.cnn.com/2026/06/03/c...
edition.cnn.com
The oceans are in deep trouble. The Trump administration just ditched a vital deep-sea monitoring system | CNN
The Trump administration will dismantle a $368 million monitoring system that provides critical data on the world’s oceans, sparking alarm among scientists
01914