Wednesday, February 01, 2012

Email 325, Oct 2003, Ammann to Michael Mann: "...the first half of the 20th century warmed up naturally"; this conflicts with current information on a DOE website

Email 325

The more we are able to explain why the first half of the 20th century warmed up naturally,
the more confidence we get on the detection of the anthropogenic signal afterwards.
Caspar

ARM Education - From the US Department of Energy:  Ask a Scientist Past Questions

The industrial revolution (at the turn of the century - 1890-1910) is often taken to be the beginning of humans influencing global warming.

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