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Every two to seven years, an unusually warm pool of water - sometimes 4 to 5 degrees Fahrenheit (2 to 3 degrees Celsius) higher than normal - develops across the eastern tropical Pacific Ocean to create a natural short-term climate change event. This warm condition, known as El Niño, affects the local aquatic environment, but also spurs extreme weather patterns around the world, from flooding in California to droughts in Australia. This winter, the 2015-16 El Niño event will be better observed from space than any previous El Niño. [Source: NASA Climate Change News]
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