NH Summer Energy: The Leading Indicator

That the NH has been cooling for the past 6,000 years has found new supporting evidence in a recent article (Jakobsson, 2010) that states in the abstract:

“The combined sea ice data suggest that the seasonal Arctic sea ice cover was strongly reduced during most of the early Holocene and there appear to have been periods of ice free summers in the central Arctic Ocean.”

Determining the Correct Climate Sensitivity

While researching the AGW models of CO2 forcing I found a significant overstatement that severely weakens the stated impact of increasing CO2 levels.