Update on scenerios....

It looks increasingly like Scenerio C from Hansen et al, is a much the best match (except for CO2 after 2000) to the actual greenhouse gas mixing ratios up till now. If you look at the prediction, there is not much difference between those for Scenerios B and C. The bottom line is that anyone who says Scenerio A is the best match is blowing smoke. Finding a consistent set of data for all of the non-CO2 greenhouse gases is proving to be a problem. Hopefully graphs tomorrow.