Quote:
Originally Posted by MelBridgeman
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I think it's been clearly demonstrated that Mann's graphs are based on bad models, and he should pretty much be excluded from any debate on climate change for that reason alone; he's one of those guys who seemed to have a point he wanted to make, and created a model that he thought would prove it. Not that such scientists don't exist on the other side of the debate.
However, the warming trend has been produced by several other independent climate analysts working independently and often using entirely different methods; never so dramatic as in the Mann data.
Similarly, adjusting the temperature in the 1930s upward and the temperature in the 1990s downward by about a tenth of a degree doesn`t really have any bearing one way or another over the warming trends of the last two thousand years; I`ve seen only one data set that suggests that the 1900s were not the warmest of the last couple thousand years (one data set had the 1900s as the second warmest after the 1000s).