New SPPI Paper: Solar Influence on Global Temperature

Source: SPPIIdso - solar_influence

The claim that anthropogenic greenhouse gas emissions have been responsible for the warming detected in the twentieth century is based on what Loehle (2004)[1] calls “the standard assumption in climate research, including the IPCC reports,” that “over a century time interval there is not likely to be any recognizable trend to global temperatures (Risbey et al., 2000), and thus the null model for climate signal detection is a flat temperature trend with some autocorrelated noise,” so that “any warming trends in excess of that expected from normal climatic variability are then assumed to be due to anthropogenic effects.” If, however, there are significant underlying climate trends or cycles-or both-either known or unknown, that assumption is clearly invalid.