A Further Study of Essence of the ENSO
关于ENSO本质的进一步研究

Based on a scientific viewpoint: The ENSO results from air-sea interaction in the tropical Pacific Ocean region, some analyses are complcled wilh the JEDAC data and NCEP reanalysis data in this study. The results show that: The subsurface ocean temperature anomalies (SOTA) exist interannual cycle which is closely related to the ENSO; The occurrence of El Nino (La Nina) is directly associated with positive (negative) SOTA in the warm pool and its eastward propagation along the equatorial thermocline; Real originate of the ENSO is in warm pool of the equatorial western Pacific; The interannual cycle of SOTA in the tropical Pacific is driven by zonal wind anomaly over the equator ial western Pacific which is caused mainly by anomalous East-Asian winter monsoon. Further, a new theory on the ENSO cycle is advanced in this study, i. e., the ENSO is interannual cycle of SOTA in the tropical Pacific driven by zonal wind anomaly over the equatorial western Pacific which is caused main ly by anomalous East-Asian winter monsoon.