Best Of NASA Season 1 Episode 3 El Ni±o and the Pacific Ocean

Every two to seven years, an unusually warm pool of water-sometimes two to three degrees Celsius higher than normal-develops across the eastern equatorial Pacific Ocean. This warm condition, known as El Ni±o, can disrupt marine ecosystems and spur extreme weather patterns around the world. To predict it, NASA scientists use computer models that simulate ocean temperatures in the Pacific.