A statistical model created at Ohio State University and the University of Missouri forecasts sea surface temperatures in the tropical Pacific Ocean, and gives scientists a way to quantify the uncertainty that surrounds the climatic phenomenon known as El Niño. The top image shows actual sea surface temperatures for November 2002, while the bottom image shows the temperatures forecasted by the model for November 2002 but based on data up to and including April 2002. The color red indicates above average temperatures.

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