Breaking: A peer reviewed admission that “global surface temperatures did not rise between 1998 and 2008″

July 4, 2011 by Anthony Watts

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The Kaufmann et al 2011 paper (Note: Michael L. Mann is a co-author, not the same as Michael E. Mann of hockey team fame) was embargoed until 8PM GMT (12PM PDT) today, and we have an advance copy thanks to Dr. Benny Peiser .

Here is the PDF file: pnas.201102467

The headline from the abstract:

Given the widely noted increase in the warming effects of rising greenhouse gas concentrations, it has been unclear why global surface temperatures did not rise between 1998 and 2008.

But in the conclusion:

The finding that the recent hiatus in warming is driven largely by natural factors does not contradict the hypothesis: “most of the observed increase in global average temperature since the mid 20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations (14).”

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