Which describes one characteristic of both El Niño and La Niña?

Both El Niño and La Niña are phases of a climate pattern involving changes in sea-surface temperatures and winds in the tropical Pacific Ocean. El Niño brings unusually warm water there, while La Niña brings unusually cool water, so they do not both create warmer water. Their influence on hurricanes varies, and neither is itself long-term climate change.

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