Graeme MacGilchrist
@gmacgilchrist.bsky.social
Oceanographer and climate scientist. Senior research fellow at U. of St Andrews.
Reposted by Graeme MacGilchrist
“Housing shortage – Jews to blame," letter sticker, German Reich, 1938
zwangsraeume.berlin/en/context
zwangsraeume.berlin/en/context
November 14, 2025 at 2:16 AM
“Housing shortage – Jews to blame," letter sticker, German Reich, 1938
zwangsraeume.berlin/en/context
zwangsraeume.berlin/en/context
Reposted by Graeme MacGilchrist
Anyone looking for a short primer on the #CarbonCycle (🌳and 🌊) could do a lot worse than today's #TheLifeScientific programme on #BBCRadio4 with @jimalkhalili.bsky.social interviewing @pfriedling.bsky.social (@exeter.ac.uk) ...
www.bbc.co.uk/sounds/play/...
www.bbc.co.uk/sounds/play/...
The Life Scientific - Pierre Friedlingstein on carbon’s pivotal role in climate change - BBC Sounds
Pierre Friedlingstein on the pivotal role of carbon in predicting climate change.
www.bbc.co.uk
November 11, 2025 at 10:00 AM
Anyone looking for a short primer on the #CarbonCycle (🌳and 🌊) could do a lot worse than today's #TheLifeScientific programme on #BBCRadio4 with @jimalkhalili.bsky.social interviewing @pfriedling.bsky.social (@exeter.ac.uk) ...
www.bbc.co.uk/sounds/play/...
www.bbc.co.uk/sounds/play/...
Reposted by Graeme MacGilchrist
SUPERB and angrily unvarnished response, by former BBC chairman, Lord Patten.
"I don't think that we should allow ourselves to be bullied into thinking that the BBC is only any good, if it reflects the prejudice of the last person who shouted at it." ~AA
"I don't think that we should allow ourselves to be bullied into thinking that the BBC is only any good, if it reflects the prejudice of the last person who shouted at it." ~AA
November 10, 2025 at 6:40 PM
SUPERB and angrily unvarnished response, by former BBC chairman, Lord Patten.
"I don't think that we should allow ourselves to be bullied into thinking that the BBC is only any good, if it reflects the prejudice of the last person who shouted at it." ~AA
"I don't think that we should allow ourselves to be bullied into thinking that the BBC is only any good, if it reflects the prejudice of the last person who shouted at it." ~AA
Reposted by Graeme MacGilchrist
It’s been a while since I shared these, so here we go!
If you are new to BlueSky, here are a few 🌊 ocean starter packs 🌊 to help you find who to follow:
Physical oceanography
go.bsky.app/Eb6xX19
Polar oceans
go.bsky.app/851nQgx
Organisations
go.bsky.app/U1Ei6XY
If you are new to BlueSky, here are a few 🌊 ocean starter packs 🌊 to help you find who to follow:
Physical oceanography
go.bsky.app/Eb6xX19
Polar oceans
go.bsky.app/851nQgx
Organisations
go.bsky.app/U1Ei6XY
November 9, 2025 at 12:35 PM
It’s been a while since I shared these, so here we go!
If you are new to BlueSky, here are a few 🌊 ocean starter packs 🌊 to help you find who to follow:
Physical oceanography
go.bsky.app/Eb6xX19
Polar oceans
go.bsky.app/851nQgx
Organisations
go.bsky.app/U1Ei6XY
If you are new to BlueSky, here are a few 🌊 ocean starter packs 🌊 to help you find who to follow:
Physical oceanography
go.bsky.app/Eb6xX19
Polar oceans
go.bsky.app/851nQgx
Organisations
go.bsky.app/U1Ei6XY
Reposted by Graeme MacGilchrist
No it’s important to listen to this. Because then you understand that many of them will do ANYTHING to keep power. Remember Musk got involved in the 2024 election after saying to Tucker “if she wins” I am definitely going to prison.
So we need to move knowing that nothing is off the table for them.
So we need to move knowing that nothing is off the table for them.
Steve Bannon: If we lose the midterms and we lose 2028, some in this room are going to prison, myself included.
November 7, 2025 at 12:22 AM
No it’s important to listen to this. Because then you understand that many of them will do ANYTHING to keep power. Remember Musk got involved in the 2024 election after saying to Tucker “if she wins” I am definitely going to prison.
So we need to move knowing that nothing is off the table for them.
So we need to move knowing that nothing is off the table for them.
Reposted by Graeme MacGilchrist
Don’t miss the 12 November closing date!
Seeking a three year postdoc in the field of ocean biogeochemistry and productivity using mechanistic models and synthesis of observations. Note the short fuse for applications. Please help distribute. All nationalities welcome to apply! 🌊
www.jobs.ac.uk/job/DPG117/p...
www.jobs.ac.uk/job/DPG117/p...
Postdoctoral Research Associate at University of Liverpool
Looking for a new job opportunity in academia? Check out this job opening for a Postdoctoral Research Associate on jobs.ac.uk!
www.jobs.ac.uk
November 5, 2025 at 5:44 PM
Don’t miss the 12 November closing date!
Reposted by Graeme MacGilchrist
The ethical use case for SRM is one in which governance conditions fail to enable adequately rapid decarbonization, and then there is a revolutionary change in governance that allows effective and equitable management of SRM
October 25, 2025 at 8:12 PM
The ethical use case for SRM is one in which governance conditions fail to enable adequately rapid decarbonization, and then there is a revolutionary change in governance that allows effective and equitable management of SRM
Reposted by Graeme MacGilchrist
Here are the Top 5 Dogs of the week!
October 17, 2025 at 2:32 PM
Here are the Top 5 Dogs of the week!
remember when I said that I’ve always said I’ve been saying it for years
October 23, 2025 at 6:35 AM
remember when I said that I’ve always said I’ve been saying it for years
Reposted by Graeme MacGilchrist
Fortunately the people proposing this disgusting treatment of immigrants and their families are currently in opposition not in government. Frankly I'm ashamed that even a minority-party elected politician of my country can dare say this out loud. Gross attitude to my friends and colleagues.
The Conservatives have drafted the legislation.
ANY one of the conditions being met leads to ILR being revoked.
If annual income falls below £38,700 for six months (for any reason at all)
The Secretary of State would also have the powers add whatever further conditions they want.
ANY one of the conditions being met leads to ILR being revoked.
If annual income falls below £38,700 for six months (for any reason at all)
The Secretary of State would also have the powers add whatever further conditions they want.
October 22, 2025 at 6:58 AM
Fortunately the people proposing this disgusting treatment of immigrants and their families are currently in opposition not in government. Frankly I'm ashamed that even a minority-party elected politician of my country can dare say this out loud. Gross attitude to my friends and colleagues.
Once more for the people in the back: you cannot ask people to pay many £1000s upfront for the *privilege* of *temporarily* coming to work and pay taxes in this country, give them nothing particularly unique in return, and expect that to be a sustainable situation.
that the upfront costs to come and do scientific research in the UK are too high is a well known terrible fact.
perhaps more surprising is that scientific excellence has persisted despite all these hurdles, but this limping cannot go on forever. Soon this fun immigration experiment will break.
perhaps more surprising is that scientific excellence has persisted despite all these hurdles, but this limping cannot go on forever. Soon this fun immigration experiment will break.
Scientists charged too much to come to work in UK, says Royal Society
Combined upfront cost of the five-year Global Talent Visa and the Immigration Health Surcharge stands at £5,941
www.ft.com
October 22, 2025 at 6:46 AM
Once more for the people in the back: you cannot ask people to pay many £1000s upfront for the *privilege* of *temporarily* coming to work and pay taxes in this country, give them nothing particularly unique in return, and expect that to be a sustainable situation.
The NHS health surcharge is a national embarrassment; and it would be if the affected group were not always perceived as “foreign”, and “privileged” to be here at all.
It says right from the start “you will be treated differently here”, and it shows our arse as a nation.
It says right from the start “you will be treated differently here”, and it shows our arse as a nation.
The costs of the UK’s Global Talent Visa looks a trifle high in comparison to competitor countries - largely through the Immigration Health Surcharge (which critics say is a form of double taxation as they contribute to the NHS through normal tax on their earnings)
October 21, 2025 at 7:13 AM
The NHS health surcharge is a national embarrassment; and it would be if the affected group were not always perceived as “foreign”, and “privileged” to be here at all.
It says right from the start “you will be treated differently here”, and it shows our arse as a nation.
It says right from the start “you will be treated differently here”, and it shows our arse as a nation.
Reposted by Graeme MacGilchrist
A famous graphic, now updated, compares locomotion in the animal kingdom
The Most Efficient Traveler Isn’t a Bird or a Fish—It’s You on a Bike
A famous graphic, now updated, compares locomotion in the animal kingdom
www.scientificamerican.com
October 14, 2025 at 1:52 PM
A famous graphic, now updated, compares locomotion in the animal kingdom
Reposted by Graeme MacGilchrist
We killed them all. Every last one of them. And now they will never be again.
They lived their Curlew lives, migrated, cared for their young, and had every right to be here - as much as ourselves. And they did us no harm.
And we killed them all.
They lived their Curlew lives, migrated, cared for their young, and had every right to be here - as much as ourselves. And they did us no harm.
And we killed them all.
Today IUCN has officially declared the Slender-billed Curlew extinct, marking the first known global extinction of a formerly widespread migratory bird species whose range included mainland Europe, North Africa, and West Asia.
Read more here ⬇️
www.unep-aewa.org/fr/node/6632
Read more here ⬇️
www.unep-aewa.org/fr/node/6632
October 11, 2025 at 1:08 AM
We killed them all. Every last one of them. And now they will never be again.
They lived their Curlew lives, migrated, cared for their young, and had every right to be here - as much as ourselves. And they did us no harm.
And we killed them all.
They lived their Curlew lives, migrated, cared for their young, and had every right to be here - as much as ourselves. And they did us no harm.
And we killed them all.
Reposted by Graeme MacGilchrist
This is absolutely staggering.
Record warm ocean temperatures continued in September across the North Pacific Ocean, with a number of consequential impacts (including on downstream weather patterns).
This graph shows the average for a band across the midlatitudes for every September from 1854-2025 using @noaa.gov ERSSTv5 data.
This graph shows the average for a band across the midlatitudes for every September from 1854-2025 using @noaa.gov ERSSTv5 data.
October 5, 2025 at 11:04 AM
This is absolutely staggering.
Reposted by Graeme MacGilchrist
4. We pay again and again for a failure to raise taxes. It’s a false economy, for which we suffer in multiple ways.
Fair Taxation Saves Us Money.
Fair Taxation Saves Us Money.
September 26, 2025 at 9:36 AM
4. We pay again and again for a failure to raise taxes. It’s a false economy, for which we suffer in multiple ways.
Fair Taxation Saves Us Money.
Fair Taxation Saves Us Money.
It just seems like, if we really wanted to, we could have solved mass poverty by now.
September 25, 2025 at 11:18 PM
It just seems like, if we really wanted to, we could have solved mass poverty by now.
This, from John, is fantastic.
I never really caught that first wave of the internet, but I certainly lament the whirlpool it has become.
I never really caught that first wave of the internet, but I certainly lament the whirlpool it has become.
September 18, 2025 at 6:20 AM
This, from John, is fantastic.
I never really caught that first wave of the internet, but I certainly lament the whirlpool it has become.
I never really caught that first wave of the internet, but I certainly lament the whirlpool it has become.
Reposted by Graeme MacGilchrist
Shankle et al. show how a better- #Ventilated #NorthPacific could have reduced the #ocean-carbon upwelled in the #SouthernOcean, reducing outgassing and revealing a remote influence on #SouthernOcean biogeochemistry in #GlacialTimes. #ice-ages @earthscista.bsky.social
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Southern Ocean CO2 outgassing and nutrient load reduced by a well-ventilated glacial North Pacific - Nature Communications
A better-ventilated North Pacific could have reduced the carbon of water upwelled in the Southern Ocean, reducing outgassing and revealing a remote influence on Southern Ocean biogeochemistry in glaci...
www.nature.com
September 18, 2025 at 2:09 AM
Shankle et al. show how a better- #Ventilated #NorthPacific could have reduced the #ocean-carbon upwelled in the #SouthernOcean, reducing outgassing and revealing a remote influence on #SouthernOcean biogeochemistry in #GlacialTimes. #ice-ages @earthscista.bsky.social
www.nature.com/articles/s41...
www.nature.com/articles/s41...
🗣️ Come one, come all!
Read about connections between North Pacific Ocean ventilation and Southern Ocean carbon release 🌊
This is the first publication from Maddie Shankle’s PhD thesis, with more exciting work to follow!
Read about connections between North Pacific Ocean ventilation and Southern Ocean carbon release 🌊
This is the first publication from Maddie Shankle’s PhD thesis, with more exciting work to follow!
🚨New paper on Southern Ocean CO2🚨
Using a suite of Earth system models, Maddie Shankle et al show that better ventilation of intermediate waters in the North Pacific ends up reducing outgassing of CO2 in the Southern Ocean 🌊🧪⚒️🧵 @earthscista.bsky.social
www.nature.com/articles/s41...
Using a suite of Earth system models, Maddie Shankle et al show that better ventilation of intermediate waters in the North Pacific ends up reducing outgassing of CO2 in the Southern Ocean 🌊🧪⚒️🧵 @earthscista.bsky.social
www.nature.com/articles/s41...
Southern Ocean CO2 outgassing and nutrient load reduced by a well-ventilated glacial North Pacific - Nature Communications
A better-ventilated North Pacific could have reduced the carbon of water upwelled in the Southern Ocean, reducing outgassing and revealing a remote influence on Southern Ocean biogeochemistry in glaci...
www.nature.com
September 18, 2025 at 5:19 AM
🗣️ Come one, come all!
Read about connections between North Pacific Ocean ventilation and Southern Ocean carbon release 🌊
This is the first publication from Maddie Shankle’s PhD thesis, with more exciting work to follow!
Read about connections between North Pacific Ocean ventilation and Southern Ocean carbon release 🌊
This is the first publication from Maddie Shankle’s PhD thesis, with more exciting work to follow!
Reposted by Graeme MacGilchrist
Maybe the land carbon sink is weaker than we thought. Big implications: "A lower-than-expected land carbon sink would also imply that the land biosphere may be closer to transitioning from a net carbon sink to a net source than current models predict" Randerson et al. www.science.org/doi/10.1126/...
The weak land carbon sink hypothesis
Satellite-derived time series of vegetation carbon do not support a strong Northern Hemisphere net land carbon sink.
www.science.org
September 15, 2025 at 10:14 PM
Maybe the land carbon sink is weaker than we thought. Big implications: "A lower-than-expected land carbon sink would also imply that the land biosphere may be closer to transitioning from a net carbon sink to a net source than current models predict" Randerson et al. www.science.org/doi/10.1126/...
Reposted by Graeme MacGilchrist
Last week, our 4th year Environmental Earth Science students were at Loch Etive, getting hands-on experience collecting data for investigating water column profiles & overturning events. Led by Drs James Barnet & @gmacgilchrist.bsky.social & supported back in the lab by @oceanicandrea.bsky.social.
September 15, 2025 at 11:34 AM
Last week, our 4th year Environmental Earth Science students were at Loch Etive, getting hands-on experience collecting data for investigating water column profiles & overturning events. Led by Drs James Barnet & @gmacgilchrist.bsky.social & supported back in the lab by @oceanicandrea.bsky.social.
Reposted by Graeme MacGilchrist
Meet the motley crew of the School of Earth and Environmental Sciences – ready to kick off the new academic year! 🌍👋
Special mention to our Head of School, Prof. Rob Wilson, who is cleverly disguised a a responsible adult (the T-shirt says it all) 😅🤦♂
www.st-andrews.ac.uk/earth-scienc...
Special mention to our Head of School, Prof. Rob Wilson, who is cleverly disguised a a responsible adult (the T-shirt says it all) 😅🤦♂
www.st-andrews.ac.uk/earth-scienc...
September 12, 2025 at 9:23 AM
Meet the motley crew of the School of Earth and Environmental Sciences – ready to kick off the new academic year! 🌍👋
Special mention to our Head of School, Prof. Rob Wilson, who is cleverly disguised a a responsible adult (the T-shirt says it all) 😅🤦♂
www.st-andrews.ac.uk/earth-scienc...
Special mention to our Head of School, Prof. Rob Wilson, who is cleverly disguised a a responsible adult (the T-shirt says it all) 😅🤦♂
www.st-andrews.ac.uk/earth-scienc...
Reposted by Graeme MacGilchrist
Moral incoherence is the zeitgeist of our age.
August 21, 2025 at 5:47 PM
Moral incoherence is the zeitgeist of our age.
Reposted by Graeme MacGilchrist
Our finalised paper on flat10MIP is finally up in GMD! This is the experimental protocol which allows for a simple, emissions-driven evaluation of TCRE, ZEC and climate reversibility in CMIP7. Thanks so much to all who ran these simulations as a proof of concept! gmd.copernicus.org/articles/18/...
flat10MIP: an emissions-driven experiment to diagnose the climate response to positive, zero and negative CO2 emissions
Abstract. The proportionality between global mean temperature and cumulative emissions of CO2 predicted in Earth system models (ESMs) is the foundation of carbon budgeting frameworks. Deviations from ...
gmd.copernicus.org
September 8, 2025 at 9:56 AM
Our finalised paper on flat10MIP is finally up in GMD! This is the experimental protocol which allows for a simple, emissions-driven evaluation of TCRE, ZEC and climate reversibility in CMIP7. Thanks so much to all who ran these simulations as a proof of concept! gmd.copernicus.org/articles/18/...