A highly consequential error and the IPPC

If this doesn’t make waves it should!

The IPCC Fourth Assessment Report of 2007 (AR4) contained various  errors, including the well publicised overestimate of the speed at which  Himalayan glaciers would melt. However, the IPCC’s defenders point out  that such errors were inadvertent and inconsequential: they did not  undermine the scientific basis of AR4. Here I demonstrate an error in  the core scientific report (WGI) that came about through the IPCC’s  alteration of a peer-reviewed result.  This error is highly  consequential, since it involves the only instrumental evidence that is  climate-model independent  cited by the IPCC as to the probability  distribution of climate sensitivity, and it substantially increases the  apparent risk of high warming from increases in CO2 concentration.


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