Could you be more specific? What evidence would suit your need?
All the observations that have been made around the world for decades are already good evidence to begin with in my opinion.
In regards to the whole thing, there are many things that can be debated but the fact that T° has increased and that it has an effect on climate is no longer debated.
Correct me if I'm wrong but global temperature is closely related to climate. They both are part of it. So if it increases or decreases on a global scale, I can hardly see how it is not a change in climate to begin with.
If you think that global temperature has no effect whatsoever on climate or simply that temperature hasen't increased since, let's say 1900, then I don't know what evidence would be good for you.
Maby Doug1o29 could provide some evidence from his work as well.
Edited by JayMark, 25 April 2012 - 01:55 PM.