El Niño/La Niña Update (September 2012)

Publication

25 September 2012

Cyclone over Pacific. Massive cyclone related to El Nino phenomena swirling over the Pacific Ocean.

Adobe Stock / Microgen

Neutral conditions (neither El Niño nor La Niña) continue in the tropical Pacific. During July

and August 2012, the tropical Pacific sea surface temperature rose to a level indicative of a

weak El Niño, but an atmospheric response has not yet been observed in the Pacific region.

An atmospheric response is necessary for an El Niño to have global climate impacts.

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