Give me the evidence that is not based on computer models. The arctic sea ice gained 30% in 2013 and there has been no global increase in average temperature for over a decade. Your graph shows concentrations of co2 but these levels have been seen before in years gone by. Did ancient man have diesel engines etc. In 1843 they were convinced of a northwest passage because of warming but they got stuck. Report in the Times of the day.
Probably the best site that I have found that presents the evidence well and debunks the AGW denialist claims is this one:
http://www.skepticalscience.com
