A Preliminary Study on the Relation Between the Thermal and Geometric Surface Centroids of the Western Pacific Warm Pool  

作　　者：FANG Mingqiang 

机构地区：[1]Ocean Remote Sensing Institute, Ocean University of China, Qingdao 266003, P. R. China [2]Key Laboratory of Ocean Remote Sensing, Ministry of Education of P. R. China, Qingdao 266003, P.R. China

出　　处：《Journal of Ocean University of China》2006年第2期91-98,共8页中国海洋大学学报（英文版）

基　　金：This study has been supported by the Doctoral Startup Foundation of 0cean University of China(2003);partly by the Natural Science Foundation of China(No.40506035).The author is thankful to the NCDC for the SST data.The author also thanks the reviewers for their very valuable suggestions.

摘　　要：Numerous published results have showr the importance of the Wcstern Pacific Warm Pool （WPWP）surface centroid movement in ENSO-（EI Nino/Southcrn Oscillation）rclated studies .Howcver,some rccent research conclusions make it necessary to clarify the differenccs of the currently exicing two types of WPWP surface centroid：the geometric centroid and the thermal （heat）centrold.This study analyzes the physical backgrounds of the two typcs of centroid and points out their differenccs.which suggest that different types of ccntroid may scrve different study purposes.This study also shows that the ‘geometric center’of WPWP.actually a close approximation to the mass ccntroid,is more related to the Nino-3 region sca surfacc temperaturc（SST）ancmaly and can also be regarded as an important indicator of ENSO events.众多的出版结果证明了在 ENSO-(E1 Nino/Southern 摆动) 的西方的 PacificWarm 水池(WPWP ) 表面矩心运动的重要性联系了研究。然而，一些最近的研究结论使澄清当前退出的差别必要 WPWP 的二种类型出现矩心：几何矩心并且热(热) 矩心。这研究分析矩心的二种类型的物理背景并且指出他们的差别，它建议矩心的不同类型可以服务不同学习目的。这研究也证明“ WPWP 的几何中心”，实际上靠近的近似到集体矩心，是与 Nino-3 区域海面温度(SST ) 有关的更多异例和罐头也被认为是 ENSO 事件的重要指示物。

关 键 词：Western Pacific Warm Pool （WPWP） ENSO thermal centroid geometric centroid mass centroid 

分 类 号：P731[天文地球—海洋科学]