Some experts believe that the heavy rainfall which preceded the epidemic that killed as many as 17 million Aztecs in 16th Century Mexico was triggered in part by El Nino…
Sea surface temperatures fluctuate over the 20 to 30 year cycle of the Pacific Decadal Oscillation.
While the Atlantic Multi-decadal Oscillation takes between 65 and 70 years with temperature variations of point 5 Celsius
The changing surface temperatures on the two American seaboards has a profound impact on the climate of the continent…