摘要
The Indian Ocean Dipole (IOD) is an intrinsic ocean-atmosphere coupled mode in the tropical Indian Ocean (IO)[1,2]. It features a sea surface temperature (SST) anomaly gradient, defined by the dipole mode index (DMI), the difference of area-averaged SST anomaly between the western tropical IO (50°–70°E, 10°N–10°S)and the southeastern tropical IO (90°–110°E, Eq.-10°S). The IOD event tends to develop and mature in the boreal summer and fall seasons. When a positive IOD (p IOD) occurs, SST warms up in the west and cools down in the east, which sets up an east-west pressure gradient. The atmosphere hence responds to the
The Indian Ocean Dipole （IOD） is an intrinsic ocean-atmosphere coupled mode in the tropical Indian Ocean （IO） [1,2]. It features a sea surface temperature （SST） anomaly gradient, defined by the dipole mode index （DMI）, the difference of area-averaged SST anomaly between the western tropical 10 （50°-70°E, 10°N-10°S） and the southeastern tropical IO （90°-110°E, Eq.-10°S）.
基金
supported by the State Oceanic Administration of China (GASI-IPOVAI-02)
the National Natural Science Foundation of China (41525019, 41521005)
the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA11010103)
the National Basic Research Program of China (2018YFA0605704)
supported by a joint research Centre for Southern Hemisphere Ocean Research (CSHOR) between QNLM and CSIRO
sponsored by NASA Earth Science funding, available at www.remss.com
