Journal article

A new dipole index of the salinity anomalies of the tropical Indian Ocean.

Junde Li, Chujin Liang, Youmin Tang, Changming Dong, Dake Chen, Xiaohui Liu, Weifang Jin

Sci Rep | Published : 2016

Abstract

With the increased interest in studying the sea surface salinity anomaly (SSSA) of the tropical Indian Ocean during the Indian Ocean Dipole (IOD), an index describing the dipole variability of the SSSA has been pursued recently. In this study, we first use a regional ocean model with a high spatial resolution to produce a high-quality salinity simulation during the period from 1982 to 2014, from which the SSSA dipole structure is identified for boreal autumn. On this basis, by further analysing the observed data, we define a dipole index of the SSSA between the central equatorial Indian Ocean (CEIO: 70°E-90°E, 5°S-5°N) and the region off the Sumatra-Java coast (SJC: 100°E-110°E, 13°S-3°S). C..

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