I realize the AGW enthusiasts are probably guffawing at such a paltry contribution for mans
evil over the last half
century but I find the logic inescapable until the AGW crowd can explain these variations it seems to me to be the most plausible argument that it is 1/4
of the contribution in the latter half
of the 20th
century meaning
of course that the total change expected this
century would be possibly another 0.4 C change from CO2 even if we continue on the
course we are on today and double CO2 by 2100.