This graphic is of Northern Hemisphere summer temperature anomalies, comparing the last 3 decades to the average of the previous 3 decades.
It's included in this item Must-Read Hansen: 'Climate Change Is Here giving us all a heads up on a new paper.
The paper's being released on Monday 6 August (USA time). Unlike some other papers, this one relies on records of temperature anomalies that have already occurred rather than models or projections of what might occur in various circumstances.
Have a look at it and then we'll all be ready when the full paper is released, even though it might be a bit of a challenge to
a) get access to it at all .... and/or
b) make sense of the paper when we do get to read it.