Bigwig

Does anyone know of a clear articulation of the verification or validation procedures undertaken in weather or climate simulations? I know V+V is heavily relied upon in the engineering sciences, and less so in the "theoretical" sciences, but I was wondering if there was a lucid explication of the way in which weather/climate models get their credentials given the difficulty of obtaining good experimental data in such a complex system. Any information (especially references to journal articles) would be helpful.