As I said on another thread, demonstrating legal fraud would require a private E-mail that: a) admits that the data for a paper was salted, and b) says the data-salting was necessary to secure further funding. Both establish that money was appropriated on false pretenses. Data-massaging that isn't used to secure further funding may be breach of the contract with the grantor.
Do your courts allow discovery? If these frauds try to being a suit against him he can request all of their documents involving global warming. And really blow the lid off of this thing.