A series of analyses indicating the current and past conditions of the surface waters of the equatorial Pacific Ocean.  Select desired field from the menu at left.

Aids to interpreting plots:

Definitions

Climatology	The long-term average of a given variable, often a 30-year period.
Anomaly	The difference between the observed value of a variable and its climatological value.
Standardized Anomaly	An anomaly of a given variable that has been divided by its standard deviation over the base period considered.