热带太平洋与印度洋相互作用的年代际变化及其数值模拟  

Interdecadal change of the interaction between tropical Pacific and tropical Indian Ocean by diagnosis analysis and its numerical simulations

作　　者：张福颖[1] 郭品文[1] 程军[1] 

机构地区：[1]南京信息工程大学大气科学学院,江苏南京210044

出　　处：《大气科学学报》2012年第1期32-40,共9页Transactions of Atmospheric Sciences

基　　金：国家自然科学基金资助项目(41105096)

摘　　要：利用全球海表温度资料和NCEP/NCAR再分析资料,发现热带印度洋偶极子事件与热带太平洋ENSO事件存在相互作用,但其相互作用关系在1961年前后发生了明显的跃变。通过CCM3(community climate model version 3)模式,研究了不同年代热带太平洋和热带印度洋SST(sea surface temperature)变化对其上空大气环流影响的变化,结果表明:1961年后,热带印度洋发生正偶极子事件时,两大洋的垂直环流异常的耦合很强,热带太平洋上空大气环流对印度洋偶极子事件的响应,给太平洋暖事件的异常发展提供了有利条件;同样,热带太平洋暖事件通过对热带印度洋上空大气环流的影响,给印度洋偶极子的异常发展提供了有利条件。Interaction between E1 Nifio of the tropical Pacific and Indian Ocean Dipole was studied on the basis of the monthly NCEP/NCAR reanalysis dataset and GISST data. There was an obvious jump in this interaction relationship between Dipole and ENSO events before and after 1961. The analysis results based on the CCM3 （community climate model version 3 ） model are summarized as follows：the interaction of E1 Nifio upon Indian Ocean Dipole mode was very weak during the phase between 1930 and 1961. But from 1962 to 2001 ,Indian Ocean Dipole mode provided favorable conditions for Pacific warm events. The Walker circulation over the tropical Pacific and the vertical zonal monsoon circulation over the tropical Indian Ocean coupled well over the oceanic continent. The warm events over the Pacific also provided favorable conditions for Indian Ocean Dipole mode from 1962 to 2001.

关 键 词：印度洋偶极子 ENSO 年代际 数值模拟 

分 类 号：P732[天文地球—海洋科学]