Not exact matches
The NRC asked the committee to summarize current scientific information on the temperature record for the
past two
millennia, describe the main areas of uncertainty and how significant they are, describe the principal methodologies used and any problems with these approaches, and explain how central is the debate
over the paleoclimate temperature record to the
state of scientific knowledge on global climate change.
Mike Wallace's talk was about the «National Research Council Report on the «Hockey Stick Controversy»... The charge to the committee, was «to summarize current information on the temperature records for the
past millennium, describe the main areas of uncertainty and how significant they are, describe the principal methodologies used and any problems with these approaches, and explain how central is the debate
over the paleoclimate record within the overall
state of knowledge on global climate change.»
Changes in solar activity mirror changes in the Pacific
state and changes in global temperature
over the
past millennium.
In testimony before the US Senate in 2003, he
stated: It is the consensus of the climate research community that the anomalous warmth of the late 20th century can not be explained by natural factors, but instead indicates significant anthropogenic, that is human influences... More than a dozen independent research groups have now reconstructed the average temperature of the northern hemisphere in
past centuries... The proxy reconstructions, taking into account these uncertainties, indicate that the warming of the northern hemisphere during the late 20th century... is unprecedented
over at least the
past millennium and it now appears based on peer - reviewed research, probably the
past two
millennia.