I can't say for 1998, but this paper[1] compares the IPCC projections made from 2000 and onwards. The earlies estimation underpredicted temperature rise while

I can't say for 1998, but this paper[1] compares the IPCC projections made from 2000 and onwards. The earlies estimation underpredicted temperature rise while later ones did better. I also checked the IPCC predictions from 2001 myself a couple of years ago[2], and across multiple factors like sea rise, glacier loss etc observed values seemed to be within the predictions. [1]: https://www.nature.com/articles/s41598-022-16264-6 https://www.nature.com/articles/s41598-022-16264-6 [2]: https://news.ycombinator.com/item?id=27166369 https://news.ycombinator.com/item?id=27166369