摘要
用SODA资料分析了热带西南印度洋上升区温度距平与整个南印度洋温度距平的时滞相关,发现热带西南印度洋上升区温度距平与65°S,105°E附近200m深度的温度距平存在滞后10a的相关振荡,同时探讨了其可能的机制为温跃层内的斜压内波驱动,即65°S,105°E附近200m深度的温度距平沿着温跃层上层在东南印度洋沿岸从高纬度向低纬的传播,传播时间大约为10a左右,这种信号在传播过程中表现得较弱,而在起点和终点的两端振荡比较强。波动的传播相比振荡本身要显得弱。
The temperature anomalies lag relationship between whole south Indian Ocean and the upper welling re- gion of the southwest tropical Indian Ocean is investigated using the Simple Ocean Data Assimilation （SODA） oce- anic reanalyses. The results indicate that the signal of temperature anomalies propagates from high latitude to low latitude along thermocline in the southeast Indian Ocean. It is found that the atmospheric perturbation drive the signal in the ocean located around 65°S,105°E at the beginning,then it reaches to southeast Indian Ocean after a bout 10 a. The possible reason is also discussed in this study.
出处
《海洋学报》
CAS
CSCD
北大核心
2013年第4期47-51,共5页
基金
国家重点基础研究发(973计划)课题:"南大洋-印度洋海气过程对东亚及全球气候变化的影响"
国家自然科学基金:"用海洋非-BOUSSINESQ近似耦合模式研究全球变暖对海平面及相关物理量的影响"(40976015)
关键词
东南印度洋
海温经向传播
10周期振荡
西南印度洋上升区
southeast Indian Ocean
rneridional propagation
decadal oscillation
upper welling region in the south- west Indian Ocean
