Global sea level is measured by satellite with precision since 1993. A new study compares the data with IPCC projections from the same time. Both the overall rise and its acceleration (the rate of rise has doubled since 1993) are very close to the data.
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025EF006533
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025EF006533
