The death and destruction of the Little Ice Age (LIA) mercifully came to an end during the mid-1800's as the world began to warm. The LIA occurred during a time when solar activity was extremely low, as evidenced by the Maunder, Spörer and Dalton minimums. Since the absolute solar low point of the Maunder epsiode, solar activity has slowly increased over the last 400 years until it reached its maximum during the modern era.
As the solar activity (total solar irradiance) increased, so did global temperatures [the HADCRU global warming from 1850 to 2000 is .55C] and the warming commenced well before the tremndous increase of CO2 emissions after World War II. Now, a new peer-reveiwed study also identifies a 50% in solar UV striking earth over the last 400 years, which would cause a warming of the oceans. A combination of the increased TSI and UV may explain up to 0.44 degrees of the 0.55 degree HADCRU warming - 80%.
Read more:
http://www.climatechangedispatch.com/home/8407-new-research-indicates-that-80-of-modern-global-warming-is-due-to-increased-solar-activity
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