Journal of Tropical Oceanography ›› 2014, Vol. 33 ›› Issue (2): 28-36.doi: 10.11978/j.issn.1009-5470.2014.02.004cstr: 32234.14.j.issn.1009-5470.2014.02.004

• Marine Meteorology • Previous Articles     Next Articles

Diagnostic analysis of nonlinear correlation characters between the variables in the tropical Pacific Ocean and ENSO

HONG Mei1, ZHANG Ren1, YU Dan-dan2, DONG Zhao-jun2, LI Can1   

  1. 1. Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101, China; 2. 6174161936 Troops Troops 61741 Troopsof the People’s Liberation Army, Beijing 100081, Beijing 100081China
  • Received:2012-11-16 Revised:2013-05-19 Online:2014-04-02 Published:2014-04-02
  • Contact: 国家自然科学基金项目(41375002、41005025/D0505、41306010); 江苏省自然科学基金面上项目(BK2011123)

Abstract: The goal of this study is to further explore the nonlinear correlation characteristics between variables in the tropical Pacific ocean-atmosphere system. The data used include the sea surface temperature (SST) data provided by the Hadley Center, and the sea surface wind field and sea level pressure data provided by the U.S. National Center for Environmental Prediction (NCEP) and the National Center for Atmospheric Research (NCAR). The empirical orthogonal function (EOF) analysis and the nonlinear canonical correlative analysis (NLCCA) are used to analyze nonlinear correlations among SST, sea surface wind and sea level pressure. The results show that the Pacific warm pool in the abnormal warming state and the westerly wind anomalies in the tropical western Pacific are two foreboding conditions of ENSO events. Using the singular value decomposition (SVD) method, combined with the NLCCA method, the area affected by coupling and the distribution characteristics of the anisotropic relationship of SST, sea surface wind and sea level pressure in the tropical Pacific Ocean are also analyzed. The results show good correlations exist among the tropical Pacific westerly anomaly, the western Pacific subtropical high and ENSO cycle.

Key words: tropical Pacific Ocean, ocean-atmosphere system, nonlinear canonical correlative analysis method, ENSO

CLC Number: 

  • P732