November 17, 2009
Graph of the Day: El Niño 26 Aug 2009 – 11 Nov 2009
Temperature in the equatorial Pacific Ocean (above). El Niño is characterized by warm temperatures (red), and La Niña is characterized by are cooler temperatures (blue) in the Eastern Pacific. Anomalies (below) are the variation above or below average values. 
NOAA’s El Niño Page
