Michael Mann's famous "hockey stick" graph, the ultimate alarmist propaganda poster, has, we hope, finally been laid to rest. The stick was a central part of the IPCC's third assessment report, but was strangely dropped in the fourth. However, our own government still continues to use a version of it in order to mislead the unsuspecting public:
Steve McIntyre at Climate Audit has finally killed it off (although I can't imagine Michael Mann going quietly on this) by demonstrating that the characteristic shape was achieved by cherry-picking only certain tree-ring data that produced such a shape. If all of the data had been used, the result would have been far less interesting, and therefore would not have advanced the alarmist agenda (check out the black line in the following graph):
The next graphic compares the RCS chronologies from the two slightly different data sets: red – the RCS chronology calculated from the CRU archive (with the 12 picked cores); black – the RCS chronology calculated using the Schweingruber Yamal sample of living trees instead of the 12 picked trees used in the CRU archive. The difference is breathtaking.
This is sadly yet more evidence suggesting that climate change research has been corrupted by unscrupulous scientists seeking to advance a pre-conceived agenda.
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