大气科学2011，Vol.35Issue(2)：339-349,11.
南半球对流层大气对热带太平洋-印度洋海温异常综合模的响应及其机制解释
Teleconnection Mode between the Tropical Pacific- Indian Ocean Temperature Anomaly and Southern Hemisphere TroposphericCirculation and Its Mechanism
摘要
Abstract
The teleconnection mode between the tropical Pacific- Indian Ocean temperature anomaly and Southern Hemisphere tropospheric circulation and its mechanism are studied through NOAA SST and NCEP/NCAR reanalysis data sets. First of all, spatial teleconnection mode is presented by using correlation and composition analyses and results show that there are obvious characteristics of remote response in the Southern Hemisphere troposphere closely related with the tropical Pacific- Indian Ocean temperature anomaly in boreal autumn and winter. These centers of action compose a Rossby wave train, starting from the middle of the tropical Pacific and ending in southern Africa and the tropical Indian Ocean. The train links the tropical Pacific, the Indian Ocean to the Southern Hemisphere high latitudes and plays a similar “atmosphere bridge” role. However, the pure IOD (Indian Ocean Dipole) and pure ENSO are difficult to excite teleconnection wave train in the Southern Hemisphere, which further confirms the interaction between them. Secondly, the theory of planetary wave energy propagation can be used to explain the teleconnection. It is found that the energy propagation of planetary wave with zonal numbers 1 - 3 is the possible mechanism for the teleconnection between the tropical Pacific - Indian Ocean temperature anomaly and the Southern Hemisphere tropospheric circulation.关键词
热带太平洋-印度洋海温异常综合模/南半球对流层/遥相关/行星波能量传播Key words
the tropical Pacific - Indian Ocean temperature anomaly mode/ Southern Hemisphere troposphere/ teleconnection/ planetary wave energy propagation分类
天文与地球科学引用本文复制引用
周秋林,梅士龙..南半球对流层大气对热带太平洋-印度洋海温异常综合模的响应及其机制解释[J].大气科学,2011,35(2):339-349,11.
