El Niño and La Niña weather patterns have a significant impact on California climate. This illustration shows the drought impacts.
Long-term La Niña periods have been associated with long-term droughts in the southwest lasting 200, 90 and 55 years. More specifically severe droughts from AD1021 to 1051, AD1130 to 1180, AD1240 to 1265, AD1360 to 1365.
I often wondered what was the controlling mechanism that generated long-term La Niña conditions with few La Niño conditions. Plate Climatology Theory may be one possible answer, the generation of La Niña events by undersea volcanic activity.
Geologically induced “Eruptive” warm burst that helps generate 2014-2015 El Nino.
All El Ninos originate at the same fixed “Point Source” located east of Papua New Guinea and the Solomon Islands. Fixed point sources are typical of geological features, and not typical of ever moving atmospheric or ocean…
View original post 364 more words