El Niño Southern Oscillation (ENSO)
ENSO's effect on climate by month
September to December composite anomalies (beginning El Niño/La Niña)
January to June composite anomalies
You can use these plots in publications, though we ask that you acknowledge the Physical Sciences Division in the publication. For example, "Image provided by the NOAA/ESRL Physical Sciences Division, Boulder Colorado from their Web site at http://www.esrl.noaa.gov/psd/."