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Images: The El Niño/Southern Oscillation Phenomenon

Time series of observed (red) and forecast (blue) El Ni?o sea surface temperature anomalies. Forecasts with 0, 6, 12, and 18 month leads are shown in different panels, and the observed anomalies are repeated from panel to panel.

This diagram illustrates weather pathways in the North Pacific subtropical/tropical upper ocean and the main horizontal gyres and meridional-vertical cells of the region?s ocean circulation.

Servicing an Autonomous Temperature Line Acquisition System (ATLAS) mooring of the Tropical Ocean Global Atmosphere (TOGA) program?s Tropical Atmosphere-Ocean (TAO) Array in the Pacific Ocean. ATLAS moorings measure surface winds, air temperature, relative humidity, sea surface temperature, and subsurface temperature to depths of 500 meters.