What is in dispute, by reputable climate researchers, is:
1) How much warming. The historical data has been revised and 'corrected' downward several times over the past ten years, giving the appearance of more warming in the present than the original raw data suggested. And
2) What is the cause of the warming. We now have over 20 years of computer modeling of the effects of CO2 induced warming, and the actual numbers have fallen far short of all of the predictions.
the data has been corrupted and can not be trusted.
What is a “reputable climate researcher”, anyway?