News

What is El Niño?

The term El Niño refers to the large-scale ocean-atmosphere climate phenomenon linked to a periodic warming in sea-surface temperatures across the central and east-central equatorial Pacific.

This is approximately between the date line and 120 degrees west.

El Niño represents the warm phase of the El Niño or Southern Oscillation (ENSO) cycle, and is sometimes referred to as a Pacific warm episode.

It originally referred to an annual warming of sea-surface temperatures along the west coast of tropical South America.

NOAA's Climate Prediction Center, which is part of the National Weather Service, declares the onset of an El Niño episode when the 3-month average sea-surface temperature departure exceeds 0.5 degrees Celsius in the east-central equatorial Pacific.

» More Homework Help Questions


DISCLAIMER FOR COMMENTS: The views expressed by public comments are not those of this company or its affiliated companies. Please note by clicking on "Post" you acknowledge that you have read the TERMS OF USE  and the comment you are posting is in compliance with such terms. Your comments may be used on air. Be polite. Inappropriate posts or posts containing offsite links may be removed by the moderator.

Allentown, PA 18102

41°F

Clear

TONIGHT

26°F

  • %

This Week's Circulars

Top Stories

Latest from the newsroom

More from the Newsroom