[IMG] Sea Surface Temperatures. One of the signature indicators...

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    Sea Surface Temperatures. One of the signature indicators of El Niño is warm sea surface temperatures (SST) in the equatorial Pacific Ocean. Current SSTs are 1-2 degrees C warmer than normal throughout from eastern to central regions of the basin (graphic above). The American Meteorological Society (AMS) Glossary of Meteorology defines El Nino as “A significant increase in sea surface temperature over the eastern and central equatorial Pacific that occurs at irregular intervals, generally ranging between two and seven years.”
 
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