James Dyke
@jamesgdyke.info
Earth systems prof & assistant director of @gsiexeter.bsky.social | Technosphere Earth newsletter https://www.technosphere.earth
Even the VPN route often doesn't work...
November 11, 2025 at 8:16 AM
Even the VPN route often doesn't work...
Aerosols are included as an element of radiative forcing along with greenhouse gasses.
November 8, 2025 at 2:56 PM
Aerosols are included as an element of radiative forcing along with greenhouse gasses.
Beyond that, tipping points have strong potential to amplify human forcing effects. When that happens is very uncertain. But we can be sure more warming means more likely. global-tipping-points.org/lana-downloa...
Global Tipping Points Report 2025 - Full Report - Global Tipping Points
global-tipping-points.org
November 8, 2025 at 12:42 PM
Beyond that, tipping points have strong potential to amplify human forcing effects. When that happens is very uncertain. But we can be sure more warming means more likely. global-tipping-points.org/lana-downloa...
Aerosols have had a net cooling effect. As these reduce their masking effect reduces and so temps go up. Methane has a strong warming effect. But these two are fast responses. CO2 stays in atmosphere for centuries and it's that that will largely determine warming. www.ipcc.ch/report/ar6/w...
November 8, 2025 at 12:42 PM
Aerosols have had a net cooling effect. As these reduce their masking effect reduces and so temps go up. Methane has a strong warming effect. But these two are fast responses. CO2 stays in atmosphere for centuries and it's that that will largely determine warming. www.ipcc.ch/report/ar6/w...
The rate of increase in radiative forcing stops at net zero - in the sense that we are no longer adding more CO2 to the atmosphere. So *very* approximately, temperature increase will stop. It may carry on for a while/decade, perhaps much longer if we are unlucky.
November 8, 2025 at 12:22 PM
The rate of increase in radiative forcing stops at net zero - in the sense that we are no longer adding more CO2 to the atmosphere. So *very* approximately, temperature increase will stop. It may carry on for a while/decade, perhaps much longer if we are unlucky.
More generally, another example of how it is cumulative emissions, not the current rate of emissions that determines warming. e.g. we will experience maximum temperature anomaly when we reach net zero (that's hopefully a when not an if).
November 7, 2025 at 5:59 PM
More generally, another example of how it is cumulative emissions, not the current rate of emissions that determines warming. e.g. we will experience maximum temperature anomaly when we reach net zero (that's hopefully a when not an if).
No, it's still wrong. The rate of *temperature* increase has not decreased, in fact it has gone up. The rate of warming of past decade is about twice that between 80s and 2010. As for the argument that we have made progress with regards postulated end-of-century warming, I'm just too tired...
November 7, 2025 at 5:57 PM
No, it's still wrong. The rate of *temperature* increase has not decreased, in fact it has gone up. The rate of warming of past decade is about twice that between 80s and 2010. As for the argument that we have made progress with regards postulated end-of-century warming, I'm just too tired...
found it.
cicero.oslo.no/en/articles/...
cicero.oslo.no/en/articles/...
Stylised pathways to “well below 2°C”
COMMENTARY: Some people love negative emissions, others hate them. Some people think 1.5°C is impossible, others think it is a matter of political will. I think
cicero.oslo.no
November 6, 2025 at 8:38 PM
found it.
cicero.oslo.no/en/articles/...
cicero.oslo.no/en/articles/...
The trajectory is essentially a vertical line. Glen has that excellent gif that animates how mitigation delay produces deeper net negative emissions.
November 6, 2025 at 8:36 PM
The trajectory is essentially a vertical line. Glen has that excellent gif that animates how mitigation delay produces deeper net negative emissions.
Within a few years the budget for a 50% chance of limiting warming to 1.5°C will be gone. We are in overshoot. Any hope for well below 2°C now relies on very significant carbon removal. When the policy penny drops that's not arriving there will then be scrabble for solar geoengineering.
November 6, 2025 at 6:37 PM
Within a few years the budget for a 50% chance of limiting warming to 1.5°C will be gone. We are in overshoot. Any hope for well below 2°C now relies on very significant carbon removal. When the policy penny drops that's not arriving there will then be scrabble for solar geoengineering.
Sticking it to the patriarchy one missed milestone at a time!
November 6, 2025 at 2:00 PM
Sticking it to the patriarchy one missed milestone at a time!