To view Animations of Seasonal Currents (arrows) and Current Speed (shading, cm per second), derived from surface drifter observations, select the desired region below.
To view Animations of time-mean currents plus variations correlated with the Southern Oscillation Index (SOI) lowpassed at five months (arrows) and current speed (shading, cm per second) derived from surface drifter observations.. In these animations, the SOI oscillations from -3 (strong El Niño) to +3 (strong La Niña) and back.
Drifter deployments began in 1979. To view the evolution of the drifter array from the intial deployment (in five year increments), please select from the date range below.