From El Niño to La Niña?

Image of the Month - November 1998

July 1997
July 1998

Sea Level Anomalies
(Credits Duacs project, CLS)

One year ago, altimetry monitored the growth of an important El Niño phenomenon. A warm water mass corresponding to a higher-than-normal sea level (July 8, 1997 map), shown as a red zone on the map, was near American coasts, and brought climate perturbations.
One year later, a cold water mass moves towards America, a phenomenon called La Niña. Its importance is nowaday difficult to forecast - and so are its consequences.

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