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| | El Nino
Southern Oscillation | | | |
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| El Niño Southern Oscillation |
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El Niño is a local warming of surface waters
which takes place in the entire equatorial zone of the central and
eastern Pacific Ocean off the Peruvian coast and which affects the
atmospheric circulation world-wide.
La Niña refers to the "cold" equivalent of El Niño.
El Niño triggers so much interest for three reasons: it can
be modelled, thus forecast; its influence on climate is global,
and there is a time lag between the phenomenon itself and many of
its most important climatic consequences. Therefore, it can be used
for forecasting climate.
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