The relationship between sea surface temperature anomaly(SSTA) and wind energy input in the Pacific Ocean over the period of 1949-2003 is studied by using daily-mean NOAA/NCEP wind stress and monthly mean Reynolds SST data.The results indicate the strong negative correlation between SSTA and local wind energy input to surface waves in most of the domain at low and middle latitudes.The SST is low(high) during the years with more(less) wind energy input.The correlation coefficients are high in the central and eastern tropical Pacific and the central midlatitude North Pacific at the decadal scale,and in the central tropical Pacific at the interannual scale.Vertical mixing processes in the upper ocean are closely associated with wind energy input,indicating that wind energy input may play an important role in interannual and decadal variability in the Pacific Ocean via regulating vertical mixing. The relationship between sea surface temperature anomaly (SSTA) and wind energy input in the Pacific Ocean over the period of 1949-2003 is studied by using daily-mean NOAA / NCEP wind stress and monthly mean Reynolds SST data.The results indicate the strong negative correlation between SSTA and local wind energy input to surface waves in most of the domain at low and middle latitudes. SST is low (high) during the years with more (less) wind energy input. The correlation coefficients are high in the central and eastern tropical Pacific and the central midlatitude North Pacific at the decadal scale, and in the central tropical Pacific at the interannual scale. Vertical mixing processes in the upper ocean are closely associated with wind energy input, indicating that wind energy input may play an important role in interannual and decadal variability in the Pacific Ocean via regulating vertical mixing.