Well lets put some context to your post SSDD.. And a few facts..
Below are two rates of warming from the Hadcrut3 lower troposphere. One is from the period 1900 through 1950 and the the other is 1951 through 2000. Below each is the rate of warming.
The trend for the period 1900-1950 is 0.51 deg C or 0.103/decade
This trend occurred before CO2 became a rapidly increasing according to the IPCC and is near or is the Natural Variational rate.
The trend for 1951-2000 is 0.50 deg C or 0.100 deg C/decade.
This means that the two rates of warming are statistically insignificant DESPITE the rapid rise in CO2 and equal to NATURAL VARIATION..
So by simple observation we can see the problem with the hypothesis of runaway temp caused by CO2. During the time they claim runway rise it was nothing of the sort and
even given the rise in CO2 there was no discernible increase in that natural rise.
Just some facts for the record...