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Pacific ENSO Update

2nd Quarter, 2010 Vol. 16 No. 2


El Niño weakened to moderate strength during March 2010, with sea surface temperature anomalies decreasing slightly, but still exceeding +1°C across much of the central and eastern equatorial Pacific Ocean at the end of the month. Subsurface heat content anomalies (average temperatures in the upper 300m of the ocean) decreased during March in response to the eastward expansion of below-average temperature anomalies at depth (100-200m) into the east-central Pacific. Anomalous tropical convection remained consistent with El Niño, with enhancement over the central and eastern Pacific and suppression over Indonesia. Collectively, these oceanic and atmospheric anomalies reflect an ongoing, but weakening El Niño.

Average SST Anomalies

Graphics from NOAA's U.S. Climate Prediction Center

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Page Last Modified: May 29 2010 00:09:19 GMT


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