This is a good read for anyone who still believes in the cult of man made global warming.
More info here as well. As stated on the <--link
INCOMPLETE UNDERSTANDING OF A COMPLEX PROBLEM: All climate modelers must build their models based upon our current understanding of how the climate system works. Therefore, if there is some important - but as yet poorly understood - process that they are missing, they will all tend to make the same error. Past evidence for this is the tendency for climate models to drift away from a realistic climate over time. This suggests that it takes a higher level of understanding to capture the intricate processes that stabilize the climate system.