Ben Sanderson
@benmsanderson.bsky.social
Climate scientist at CICERO, Oslo. I try to talk about climate science, but inevitably start talking about trains and bicycles if left unattended.
We've been explaining various methods to cook eggs to our kid, establishing a parameter space with rarely sampled areas. It's up to him to now assess why.
October 25, 2025 at 7:52 PM
We've been explaining various methods to cook eggs to our kid, establishing a parameter space with rarely sampled areas. It's up to him to now assess why.
That's insane - notably, the Grok app doesn't exhibit such opinions if asked directly. Sounds like it's a very poorly thought-through novelty app they've added for the car...
August 24, 2025 at 5:27 PM
That's insane - notably, the Grok app doesn't exhibit such opinions if asked directly. Sounds like it's a very poorly thought-through novelty app they've added for the car...
Image 1: mock 2050 forecast produced in France in 2014
Image 2: tomorrow's forecast.
Image 2: tomorrow's forecast.
August 15, 2025 at 11:42 AM
Image 1: mock 2050 forecast produced in France in 2014
Image 2: tomorrow's forecast.
Image 2: tomorrow's forecast.
Here's the full text (article was at my dad's house and made me angry)
July 20, 2025 at 4:55 PM
Here's the full text (article was at my dad's house and made me angry)
A president who follows science into a back alley with a baseball bat
April 23, 2025 at 8:25 PM
A president who follows science into a back alley with a baseball bat
Did he... just persuade MAGA to buy EVs?
March 11, 2025 at 11:30 AM
Did he... just persuade MAGA to buy EVs?
Ch10 (climate information) highlights hazards, co-design. Reminds WGI to focus on physical effects of adaptation/mitigation, highlights accessiblity of information & literacy. Some deletions around policy-focussed language...
March 6, 2025 at 10:05 PM
Ch10 (climate information) highlights hazards, co-design. Reminds WGI to focus on physical effects of adaptation/mitigation, highlights accessiblity of information & literacy. Some deletions around policy-focussed language...
Modified SRM language changes the interpretation a little - gone is the request to also consider SRM in the context of non-stabilisation pathways (i.e. the risks of a moral hazard future in which SRM displaces mitigation, and overshoot is not achieved). Hopefully authors will consider this anyway.
March 6, 2025 at 10:05 PM
Modified SRM language changes the interpretation a little - gone is the request to also consider SRM in the context of non-stabilisation pathways (i.e. the risks of a moral hazard future in which SRM displaces mitigation, and overshoot is not achieved). Hopefully authors will consider this anyway.
Ch9 (stabilisation pathways and overshoots) adds some qualifiers around the relatioship between temperature stabilisation and net zero, and adds emphasis to overshoot pathways. Language around CDR is more neutral (*capacity and* limits on CDR), and requests assessment of CH4/N2O removal. /7
March 6, 2025 at 10:05 PM
Ch9 (stabilisation pathways and overshoots) adds some qualifiers around the relatioship between temperature stabilisation and net zero, and adds emphasis to overshoot pathways. Language around CDR is more neutral (*capacity and* limits on CDR), and requests assessment of CH4/N2O removal. /7
Ch8 wordsmiths the title, adding uncertainty language about the likelihood of tipping points - adding several clarifiers about the need to consider 'low likelihood' events. Call to focus on mechanisms and drivers is a good shout, as is the need to consider system-specific thresholds. /6
March 6, 2025 at 10:05 PM
Ch8 wordsmiths the title, adding uncertainty language about the likelihood of tipping points - adding several clarifiers about the need to consider 'low likelihood' events. Call to focus on mechanisms and drivers is a good shout, as is the need to consider system-specific thresholds. /6
Ch7 (regional projections) again calls out changes at GWLs, and more details on extreme classes: cyclones, ocean events, Heat waves, sand/dust storms. /5
March 6, 2025 at 10:05 PM
Ch7 (regional projections) again calls out changes at GWLs, and more details on extreme classes: cyclones, ocean events, Heat waves, sand/dust storms. /5
Ch6 (earth system projections across timescales) remains ESM future focussed, adding callouts to cryosphere, monsoons and sea level and climate impacts at global warming levels. /4
March 6, 2025 at 10:05 PM
Ch6 (earth system projections across timescales) remains ESM future focussed, adding callouts to cryosphere, monsoons and sea level and climate impacts at global warming levels. /4
Ch5 (scenarios & projections) is in good shape, allowing WGI to explore additional scenario dimensions in the context of carbon budgets etc. - adds details on time-evolving carbon budgets, scenario dependent crossing times. /3
March 6, 2025 at 10:05 PM
Ch5 (scenarios & projections) is in good shape, allowing WGI to explore additional scenario dimensions in the context of carbon budgets etc. - adds details on time-evolving carbon budgets, scenario dependent crossing times. /3
Changes to Ch4 (processes) call out on carbon sink process (not history), calls out mountain & polar cryospheres, monsoons, atm composition and land-atm-ocn processes. /2
March 6, 2025 at 10:05 PM
Changes to Ch4 (processes) call out on carbon sink process (not history), calls out mountain & polar cryospheres, monsoons, atm composition and land-atm-ocn processes. /2
Revisions to Ch1 (Framing) adds more clarifying language on fitness for purpose, and a call to assess models. Ch2 (large scale historical) calls out EEI and highlights importance of recent changes. Ch3 (regional historical) adds focus on regimes, slow onset events and attribution of extremes. /1
March 6, 2025 at 10:05 PM
Revisions to Ch1 (Framing) adds more clarifying language on fitness for purpose, and a call to assess models. Ch2 (large scale historical) calls out EEI and highlights importance of recent changes. Ch3 (regional historical) adds focus on regimes, slow onset events and attribution of extremes. /1
Rewatching TNG with my kid - so much prescience, but on AI they were 180 off. They imagined a perfectly accurate integrative encyclopedia which struggled to grasp language and human concepts. Reality has instead given us endless convincing sounding bullshitters.
GPTs are the anti-Data.
GPTs are the anti-Data.
February 3, 2025 at 5:12 PM
Rewatching TNG with my kid - so much prescience, but on AI they were 180 off. They imagined a perfectly accurate integrative encyclopedia which struggled to grasp language and human concepts. Reality has instead given us endless convincing sounding bullshitters.
GPTs are the anti-Data.
GPTs are the anti-Data.
Why is the UK so awful at this? Literally dead last in Europe for installed heat pump capacity, and now scrapping legislation to ban gas boilers.
Slightly ranty 🧵
www.ehpa.org/market-data/
Slightly ranty 🧵
www.ehpa.org/market-data/
January 6, 2025 at 5:21 PM
Why is the UK so awful at this? Literally dead last in Europe for installed heat pump capacity, and now scrapping legislation to ban gas boilers.
Slightly ranty 🧵
www.ehpa.org/market-data/
Slightly ranty 🧵
www.ehpa.org/market-data/
Monochrome warming stripes.
January 5, 2025 at 12:26 PM
Monochrome warming stripes.
On the home leg of a solo-parenting #interrail from 🇬🇧 to 🇳🇴. Honestly recommend it.
Take extra time for each change to take the stress off and allow for mini adventures in each city. Inevitable Nintendo on 🚅-but we played pool in Paris, live music in Frankfurt and swimming with dinosaurs in Hamburg
Take extra time for each change to take the stress off and allow for mini adventures in each city. Inevitable Nintendo on 🚅-but we played pool in Paris, live music in Frankfurt and swimming with dinosaurs in Hamburg
January 5, 2025 at 9:53 AM
On the home leg of a solo-parenting #interrail from 🇬🇧 to 🇳🇴. Honestly recommend it.
Take extra time for each change to take the stress off and allow for mini adventures in each city. Inevitable Nintendo on 🚅-but we played pool in Paris, live music in Frankfurt and swimming with dinosaurs in Hamburg
Take extra time for each change to take the stress off and allow for mini adventures in each city. Inevitable Nintendo on 🚅-but we played pool in Paris, live music in Frankfurt and swimming with dinosaurs in Hamburg
I know people have bigger problems, but Oslo's transition from snowy wonderland in December to cold, dark and rainy just really sucks.
December 21, 2024 at 8:45 PM
I know people have bigger problems, but Oslo's transition from snowy wonderland in December to cold, dark and rainy just really sucks.
On another note - our return flight from Kuala Lumpur illustrates a perhaps underappreciated consequence of the war in Ukraine for global aviation emissions. Our plane flew an extra 1500km to avoid flying over Russia or Ukraine...
December 14, 2024 at 8:06 AM
On another note - our return flight from Kuala Lumpur illustrates a perhaps underappreciated consequence of the war in Ukraine for global aviation emissions. Our plane flew an extra 1500km to avoid flying over Russia or Ukraine...
Great thread from @cristiproist.bsky.social - highly recommend reading all of it.
I'll just add - as a slightly bitter ex-Colorado resident in Norway - in terms of sunshine hours:
95pct of US = Spain
All of northern Europe = Seattle
Scotland = unparalleled grimness
I'll just add - as a slightly bitter ex-Colorado resident in Norway - in terms of sunshine hours:
95pct of US = Spain
All of northern Europe = Seattle
Scotland = unparalleled grimness
December 2, 2024 at 9:04 PM
Great thread from @cristiproist.bsky.social - highly recommend reading all of it.
I'll just add - as a slightly bitter ex-Colorado resident in Norway - in terms of sunshine hours:
95pct of US = Spain
All of northern Europe = Seattle
Scotland = unparalleled grimness
I'll just add - as a slightly bitter ex-Colorado resident in Norway - in terms of sunshine hours:
95pct of US = Spain
All of northern Europe = Seattle
Scotland = unparalleled grimness
In these conversations, we often omit a very obvious reason why global warming might be accelerating since the 90s.
We are producing 70% more CO2.
We are producing 70% more CO2.
December 1, 2024 at 6:15 PM
In these conversations, we often omit a very obvious reason why global warming might be accelerating since the 90s.
We are producing 70% more CO2.
We are producing 70% more CO2.
Mitigation costs in perspective
November 27, 2024 at 10:29 PM
Mitigation costs in perspective