Read here, here and here. As these three articles indicate, the IPCC has failed miserably at making climate predictions, despite IPCC claims that their "consensus science" allows them to predict future climate scenarios out some 100 years or more.

Definition of a fortuneteller: "One who professes to predict future events"

The IPCC is a political agency of the UN, which is tasked with proving that human CO2 emissions cause global warming. The IPCC conducts absolutely zero scientific research. Instead, the IPCC seeks out agreeable 3rd party research and propaganda of green groups that they then reposition as confirmed, "robust," scientific evidence of CO2's harm.

According to Pachauri [IPCC's lead "climate scientist"] a “rapid transformation of the economic system” is required"....."Affluent countries, he says, “have to start changing direction. They can’t continue to consume at this level.” "We have been so drunk with this desire to produce and consume more and more whatever the cost to the environment that we’re on a totally unsustainable path. I am not going to rest easy until I have articulated in every possible forum the need to bring about major structural changes in economic growth and development. That’s the real issue. Climate change is just a part of it."

As can be seen, and is also freely admitted by most "elites," politics and global governance and economic transformation are the driving force of the IPCC's activities.

Its Climategate scientists focus the majority of their efforts on the political agenda objective, and as a result, the actual climate science is forsaken to the trace amounts of atmospheric gas - the CO2 god. Thus, this UN sponsored politicization of climate science turns accepted scientific forecasting techniques into little more than bizarre and alarmist fortunetelling...ergo, the IPCC can't predict squat about the climate.

Additional failed-prediction postings.