You may have to work very very hard, James, to find an "elusive
consensus-busting sceptic who is prepared to make a forecast, and stand
behind it." However, one can reasonably infer that there are some
organizations that are placing large bets on the effects of global
warming.

Please see:
http://abcnews.go.com/Business/wireStory?id=770608

Dropping all those contracts must have cost Allstate PLENTY,
but they predict more bad weather in Florida. This big decision
was not made without knowledge of global warming.