CEOF analysis for coupled circulation of atmosphere and ocean of Tropical Pacific Ocean in October

In this paper, using CEOF analysis, the dynamic statistic diagnosis of the circulation of atmosphere and ocean of tropical Pacific Ocean in October regarded as a whole is done, where through which inter-decadal and decadal variations of the coupled circulation are discussed and the relationship of ENSO is discovered.The results show that in the same mode, the deviation current of ocean is captured by equator, but wind field has no such phenomena;the first mode has close relation with ENSO, the atmosphere field represents the abnormal changes of Walker circulation;the vertical motion of atmosphere in the first mode reflects the abnormal vertical motion of equatorial and south pacific belts of convergence;in the second mode, the meridional ponderance of atmosphere field is bigger than that in the first mode, which reflects the abnormal changes of Hadley circulation;the second mode also has relation with ENSO, but the relationship is not so close as the first mode.