Dust storm Melbourne Australia

A dust cloud descends on Melbourne on February 8, 1983, a super El Niño year.

Credit:

Trevor Farrar/Australia Bureau of Meteorology

El Nino water wind patterns

The image shows what happens when a very strong El Nino strikes surface waters in the Central equatorial Pacific Ocean. The sequence shows warm water anomalies (red) develop in the Central Pacific Ocean. Winds that normally blow in a westerly direction weaken allowing the easterly winds to push the warm water up against the South American Coast.

Credit:

NASA

La Nina wind water patterns

This image shows colder than normal water (blue) anomalies in the central equatorial Pacific associated with La Nina. Stronger than normal trade winds bring cold water up to the surface of the ocean.

Credit:

NASA

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