Well, last time I looked for it, I couldn't find any older studies on the IPCC website that have been shown to be wrong.
However, having lived and read newspapers at the time, I remember the scare mongering, and specifically the mention of the "Marker Tree" in the Maldives, which were projected to to have significant areas under water by 2010, then 2020, now 2100 (spolier: it didn't happen https://uk.answers.yahoo.com/question/index?qid=201107180902...)
Cite?