Features and spatial distribution of circumpolar deep water in the southern Indian Ocean and the effects of Antarctic circum polar current

The data from the Southern Ocean observations of World Ocean Circulation Experiment(WOCE) are used for analysis and illustration of the features and spatial distributions of Circumpolar Deep Water(CDW) in the southern Indian Ocean.It is learnt from the comparison among the vertical distributions of temperature/salinity/oxygen along the 30°E,90°E and 145°E sections respectively that some different features of CDW and the fronts can be found at those longitudes,and those differences can be attributed to the zonal transoceanic flow and the merizonal movement in the Circumpolar Deep Water.In fact,the zonal transoceanic flow is the main dynamic factor for the water exchange between the Pacific Ocean and the Indian Ocean or between the Atlantic Ocean and the Indian Ocean,and for the effects on the spatial distributions of the physical properties in CDW.     

根据大气运动流函数/速度势定义的北方涛动指数及其应用

将水平风速分解为无辐散(有旋)分量和辐散(无旋)分量,然后将北太平洋高压(NPH)中心处一点(35°N,130°W)和西太平洋低压处Darwin站(10°S,130°E)之间的流函数距平/速度势距平之差定义为北方涛动指数(NOI),分析了该指数与其他一些传统指数的相关性和差异,并讨论了该指数在气候过程分析中的若干应用。