Institute of Physics warns about climate change models....

It's nice that they included a skeptic on their panel....

However, scientific understanding is constantly on the move and for every theory there is inevitably a counter argument. Professor Richard Lindzen, Professor of Atmospheric Sciences at the Massachusetts Institute of Technology argued that a poor understanding of ‘feedback factors’, such as clouds and water vapour in our atmosphere, is undermining the credibility of models.

Lindzen argued that simple physical arguments led to much smaller sensitivity to increased greenhouse gases than found in current models implying that feedbacks in these models were excessively positive. He also noted that it was unlikely that current models adequately dealt with natural internal variability of climate.