La Nina, 1999

La Nina, 1999

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Credit: NASA/SCIENCE PHOTO LIBRARY

Caption: La Nina event, 1999. This sea surface temperature map, compiled from satellite data, is a frame from an animation showing conditions in the Pacific Ocean leading up to a La Nina event in 1999. Lower temperatures are shown in blue, warmer temperatures in yellow and red. A La Nina event is defined as a sustained anomaly in the ocean surface temperature where the average temperature is at least 0.5 degrees Celsius lower than usual (as opposed to an El Nino event, where the temperatures are higher than usual). The cool band can be seen stretching across the equatorial area. La Nina events can have wide-ranging effects on the global climate.

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Keywords: 1900s, 1999, 20th century, anomalies, anomalous, anomaly, climatological, climatology, condition, conditions, cool, cooling, earth, earth observation, event, frame, from space, geographical, geography, la nina, meteorological, meteorology, ocean, ocean temperature, oceanography, pacific ocean, phase, satellite, satellite image, sea, sst, still, surface, temperatures, weather

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