You see it was a problem with footnotes. The writer working on the IPCC report didn't follow the three levels of citations back to their original and only source.
This mistake has been leapt upon by so-called Climate Deniers, just like a single office at a single university in England that issued inconsistent reports. In both cases, the Climate Deniers accurately identify that an error has been committed.
Yet, as I thought about it tonight I realized the Climate Deniers are being a bit unrealistic in their expectations of the humans writing these reports, especially in the case of the IPCC report.
Expecting perfection from countless contributors each citing thousands of independent pieces of research (each with their own citations) to aggregate a whole and accurate picture of the earth's current climate is like expecting a symphony to play each of Mozart's 41 symphonies on sequential nights, 41 nights in a row, without making a mistake.
But whether such a feat is possible doesn't interest me nearly as much as the realization that at each symphony, some number of the ninety or so musicians will make a mistake.
And, unless they all flub at the same moment, it won't matter a bit.
The symphony will still astound.