Many thanks to Donald Rapp for the honorable mention in this post and to Judith Curry for posting it at Climate, etc.
by Donald Rapp
Why after 400 years of La Niña precedence, did periods of El Niños dominance start in the 20th century? And why did the two periods of strong El Niño dominance in the 20th century occur during a period when the CO2 concentration was rising? Is there a link between rising CO2 and the El Niño – La Niña balance? But if there is such a link, why did El Niños become less prevalent than La Niñas from 1941 to 1976 and be in balance after 1998?
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