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For many people, El Niño and La Niña mean floods or drought, but the events are actually a warming or cooling of the eastern Pacific Ocean that impacts rainfall. These sea surface temperature and rainfall anomaly images show the direct correlation between ocean temperatures and rainfall during El Niño and La Niña events.
NASA Earth Observatory images by Rob Simmon and Jesse Allen, based on data from the National Oceanic and Atmospheric Administration’s Advanced Very High Resolution Radiometer and the Global Precipitation Climatology Project at NASA Goddard Space Flight Center. Caption by Holli Riebeek.
Published October 24, 2009