In 1988 the warmists issued their first prophecy of doom. Repent of your sins against Gaia, abandon the industrial civilization that allows us to feed far too many people, or the wrath of Gaia will manifest in massive global warming, with the wrath setting in around the year 2000.
The Blackboard checks on how that prediction went
In 2001 they issued a new prophecy of doom, this time with the wrath of Gaia setting in rather more slowly. When the warmists tell you that observed climate change is occurring in accord their revelations, what they actually mean is that they are adjusting their revelations to accord with observations.