Slowly and imperceptably: There will be more algae and milfoil growth, more exotic plants and creatures, water temperatures will creep upwards and more boaters, tourists, and swimmers will cavort in its warmer waters. Residents will add air conditioners to their homes, camps, and trucks.
It also appears that those who reject Global Warming are "invested" in the belief that it's not happening; for example, I've never owned a car, boat, or anything with more than an economical four cylinder engine.
I have no trouble realizing that the world is a warmer place.
On the other hand, a respondant with one or more road vehicles with V-8s (or greater) and/or with boats with 1 (2, or even 3) V-8 engines are heavily invested in the belief that Global Warming
must not affect their chosen life style pursuit, and therefore a carefully-considered response to the concept will be clouded.
More Reading:
Here's a piece on Greenland's icecap: While it's written sensationally for this particular newspaper's subscribers (i.e., sea levels to rise 21 feet, but doesn't state that ALL of Greenland's ice must melt for that to happen), it does give incite into the personal effort that scientists must go through to make such Global Warming determinations .
http://www.orlandosentinel.com/news/...ge=4&track=rss