Weekly Sea Surface Temperature Anomaly (deg. C)
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Data:   Monthly sea surface temperature anomaly (deg. C) on a 1.0 x 1.0 deg. lat/lon grid
Base Period for Climatology:  1971-2000
Data Source:  NCEP, Environmental Monitoring Center

Description:  Monthly sea surface temperature anomalies contoured at 0.5 deg. C intervals.  Shading starts at +/- 0.5 deg. C.  

NCEP is an acronym for the US National Centers for Environmental Prediction.