CAUSE OF THE ICE AGES AND CLIMATE CHANGES: EVIDENCE FROM GLOBAL TEMPERATURES, SUNSPOTS, SOLAR IRRADIANCE, SOLAR MAGNETISM, COSMIC RAYS, AND 14C AND 10B PRODUCTION RATES
Each of the Oort, Wolf, Sporer, Maunder, Dalton, and 1880–1915 Solar Minimums of the Little Ice Age were characterized by low sunspot numbers, low total solar irradiance (TSI), decreased solar magnetism, increased cosmic ray intensity, and increased production of radiocarbon and beryllium in the upper atmosphere. When SSNs and TSIs were, low, global temperatures cooled, and production rates of 14C and 10Be were high because of increased cosmic radiation.
These data lead to the hypothesis that periodic weakening of the strength of the sun’s magnetic field allows more cosmic radiation to reach the Earth, producing greater ionization and cloud formation in the atmosphere, which reflects solar irradiance and causes global cooling.
This mechanism accounts for the global synchronicity of climate changes, abrupt climate reversals, and climate changes on all time scales. Thus, cloud-generating cosmic rays provide a satisfactory explanation for both long-term and short-term climate changes.