re: And one other point
You and others question vociferously without strong evidence for any other cause. Again why? I think the data above is pretty covincing. Long term correlations betwwen CO2 and CH3 with temperature over hundreds of thousands of years plus more recent stability followed by an increase that corresponds to the amount of emmisions we have been producing. What the hell is so unbelievable about that? Forget this bias against computer models despite the fact that they are ubiquitess in most scientific fields of research these days and just look at the data.
Regards,
Mark