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For example, in 1976 an abrupt change in the temperature of the tropical Pacific Ocean preceded a rise of two-tenths of a degree in global air
temperatures.
"This phenomenon looks like El Nino, but with a much longer time scale - El Nino occurs over a period of from nine to 12 months, but this fluctuation
lasts for about 25 years," he continued. "In 1976, the ocean temperature change in question occurred very quickly, moving from cooler than normal to
warmer than normal in about a year."
Bratcher and Giese report that now conditions in the tropical Pacific are similar to those prior to the 1976 climate shift, except with the opposite
sign. If conditions develop in a similar way, then the tropical Pacific could cool back to pre-1976 conditions.
25 year fluctiation....1976 + 25 = 2001
7 Years of El Niño, 2001 + 7 = 2008
So Global Warming and natural cyclical climate variations may cause abrupt changes in water temperatures and a climate shift towards a colder Pacific
Region for possibly the next 25 years, offsetting any contraversial "green house effects".
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