NASA / SCIENCE PHOTO LIBRARY NASA / SCIENCE PHOTO LIBRARY
El Nino. Coloured satellite image of Earth showing the 1997 El Nino event developing in the eastern Pacific Ocean. The El Nino affects global weather patterns, causing unseasonal droughts and storms. The difference between average sea heights and those caused by the warm water of the El Nino are shown as colours: from purple (10 cm below normal level) through blue, green, yellow, red to white (20cm or more above normal level). The land mass of North America is black. The El Nino is the red and white area moving eastwards along the equator across the Pacific. El Nino means "the boy child" in Spanish. Image taken by the TOPEX/Poseidon satellite on 10 November 1997.
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