As almost all scientists now admit, the IPCC's climate modeling failures continue to persist with little hope of better accuracy in near future - latest failure example is the extreme precipitation prediction that Swiss scientists found to be without merit
Read here. The IPCC climate simulation models predicted more extreme precipitation events would occur because of global warming, induced by human CO2 emissions.
Two Swiss experts (not those two in the picture) analyzed 80 years of evidence of extreme snowfalls and extreme snow depth for Switzerland.
Their research found that these two indicators of extreme precipitation events did not increase as predicted by the IPCC.
"The authors write that "heavy snowfall and extreme snow depth cause serious loss of human life and property in many middle and high latitude countries almost every winter,"...they note that "climate models predict a likely increase in the frequency of extreme precipitation events in a future warmer world," citing the IPCC (2007), while adding that such is also predicted by regional climate models...based on data collected during the last 80 winters..."analysis of extreme snow depth and extreme snowfall" revealed that "none of the stations, not even the highest one at 2,500 m asl, has experienced significant (p<0.05) increasing extreme amounts during the last 80 years."... they indicate that several other studies have shown that "mean snow depth and snow days have been decreasing in the Alps in the last 20 years...the predictions of the IPCC regarding a propensity for more extreme precipitation events to occur in a warming world has not been seen in Switzerland. In fact, just the opposite appears to be the case there." [Christoph Marty, Juliette Blanchet 2012: Climatic Change]