For the first time this century, the weather phenomenon known as La Niña has returned for the third year in a row. La Niña is likely to bring about more extreme weather across the whole globe.
The weather system is characterized by unusually cold ocean temperatures in the Equatorial Pacific due to winds blowing the warm water on the surface of the Pacific towards Indonesia. This is the opposite of El Niño, which brings unusually warm ocean temperatures to the Equatorial Pacific.
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