Thanks Peter but its not what I was after. Others have mentioned the last 20 years to add on to that graph (it was done in 2004 so much of the predicted data was there and now there is actual data to be added).
I want to see a correlation going back many many more years.
(That image also shows the cooling effect of sulfate emissions - I saw somewhere about an engineering solution based on that. I wonder what I need to burn in the bipe to get merit points.)
good measure towards reducing carbon emissions with a view to mitigate global warming.
Even Gillard avoided that subject in her recent blog.