The correlation between the low-frequency components of SLA/SSTa in the Kuroshio extension region and Nino3 index is high; the maximal correlation coefficient is -0.62/-0.63 with a lag of Nino3 index behind others for 11 months.

• 黑潮延伸区SLA与SSTa的两年以上低频分量与Nino3指数之间均存在负相关；Nino3指数滞后SLA、SSTa在11个月时最大；相关系数前者约为-0.；62；后者约为-0