In midlatitudes the analysis reveals structures reminiscent of the Latif-Barnett advective mode. However, in the tropics the climate variability takes on a rather different character. Along the equator upper ocean heat content anomalies appear first in the west. These anomalies appear slowly to propagate eastward. The arrival of these anomalies in the eastern basin 5-6 years later are accompanied by SST anomalies of the same sign and corresponding changes in low level winds. Examination of the off-equatorial expression of these anomalies, indeed, reveal that they have many characteristics of a decadal ENSO.