"can be recognized only using specific techniques of analysis that take into account non-linearity and filtering of the multiple climate change contributions" and "Multiple evidences suggest that global temperatures and sunspot numbers are quite related to each other at multiple time scales. Thus, they are characterized by cyclical fractional models. However, solar and climatic indexes are related to each other through complex and non-linear processes."A simple linear model based upon the "sunspot integral" and ocean oscillations explains 95% of climate change over the past 400 years.
|Dr. Scafetta's model [black line] based upon solar and anthropogenic forcing is performing much better than the IPCC models [green band] which dismiss the role of the Sun in climate change.|