Development of buoy array in the Eastern tropical Indian Ocean and observed variability

In order to understand the variation from intraseasonal to interannual time scale in the Indian Ocean, we have conducted observation by mooring buoy array mainly in the eastern tropical Indian Ocean. Here, some results of observational studies in terms of intraseasonal to semiannual change in the thermal field and recent observed Indian Ocean Dipole events are shown. Also future mooring buoy observation plan in relation to international Indian Ocean buoy network are introduced.