We are told we are going to see a warming by 0.2 deg C per decade. I claim no warming or a slight cooling in the next two decades. As 100% of the observed data lie within the GMT band for the last 100 years (http://bit.ly/HRvReF), statistically it is correct to say the observed data will also lie within the extrapolated band at least for the next two decades. Note that the residual GMT that oscillates with in the GMT band is approximated by a normal distribution with a mean of zero and standard deviation of about 0.1 deg C. For a normal distribution, about 95% of the data lie within the +/- 2*sigma range of the GMT band as shown in the graph.
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