How the Sun controls climate, not CO2
A summary of current science, featuring a synopsis of the cosmic-ray theory and an account of the fact that “there is no global temperature.”
Dr. Vincent Courtillot is a professor of geophysics at the University Paris-Diderot and Chair of Paleomagnetism and Geodynamics of the Institut Universitaire de France. He explains how solar cycles control the climate by their influence on cloud formation (the cosmic-ray theory of Svensmark et al.) and by influencing oceanic oscillations and the length of days. Dr. Courtillot notes that the IPCC’s climatic computer-models do not correlate with real observations and that temperature trends vary substantially between North America and Europe—which is contrary to the IPCC’s computer-model predictions. He notes that while the total solar irradiance (TSI) varies by only about 0.1% over a solar cycle, the solar UV varies by about 10% and that secondary effects on cloud formation may vary by up to 30% over solar cycles. The IPCC computer-models dismiss the rôle of the sun by considering only the small variations of the TSI but ignoring the large changes in the most energetic and influential part of the solar spectrum, the ultraviolet. (From Climate Realists.)See also presentations by Prof. Bob Carter, Prof. Nir Shaviv, and others at EikeKlimaEnergie’s YouTube Channel; and see Matt Ridley (at The Rational Optimist):
Correlation ain’t causation.
But for some time I have been noticing that the correlations between certain aspects of solar activity and certain aspects of climate are getting really rather impressive – far more so than anything relating to carbon dioxide.
Carbon dioxide certainly can affect climate, but so for sure can other things, and in explaining the ups and downs of past climate, before industrialisation, variations in the sun are looking better and better as an explanation. That does not mean the sun causes current climate change, but it certainly suggests that it is at least possible that forcings more powerful than carbon dioxide could be at work.