how can anyone state "global warming is accelerating, but by how much" when the past decade has been flat, with temps slightly decreasing or increasing depending on the stop and start dates? technically I suppose cooling is just negative acceleration but surely people understand that this is the big problem. climate models have predicted 0.2plus degrees C per decade warming and we havent had it. increasing sea level rise was predicted and it hasnt happened. despite all the rather significant adjustments to the official records and the changes in methodology, all of which are in the direction of CAGW