Global temperatures rose 0.4°C in the last 2 years - much more than expected - and eliminating sulphur from maritime fuels may account for some of it.

We've been geoengineering for some time without knowing it. That geoengineering project has masked atmospheric heating. Now we have to pay the piper

https://www.nature.com/articles/s43247-024-01442-3

Also the oceans:
https://www.popularmechanics.com/science/environment/a63612575/warming-ocean-temperatures/

Prof Eliot Jacobson has the decadal increase at 0.32°C/Decade, which given we are at 1.5°C now means ~2.5°C around 2050 and ~4°C by 2100

However, he also thinks the trend isn't linear and is quadratic, meaning an increasing rate of change, so that 4°C could be low

https://climatecasino.net/2025/01/betting-on-the-end-of-the-world-2025-edition/