Recent Seasonal Dynamical Ocean over Western of Maritime Continent Before Intensive Observation Period of Equatorial Line Observations (ELO).

Furqon Alfahmi1, Nelly Florida Riama2, Antonius Wipur Byantoro3 and Jaka A I Paski2, (1)Indonesian Agency for Meteorology, Climatology and Geophysics, Meteorology, Jakarta, Indonesia, (2)Indonesian Agency for Meteorology, Climatology and Geophysics, Center for Research and Development, Jakarta, Indonesia, (3)Indonesian Agency for Meteorology, Climatology and Geophysics, Jakarta, Indonesia
Abstract:
Equatorial Line Observations (ELO) has intensive observation period during November 2019 until February 2020 that focus on air sea interaction over Western Maritime Continent (Sumatera) and the impact to MJO. Maritime Continent is very unique because there is a mixture of land and ocean straddling the equator in the center of Indian and Pacific warm pool. It is like a heat engine of the global atmospheric circulation. This paper evaluate the recent seasonal dynamical ocean before the Intensive Observation Period of Equatorial Line Observations. We use reanalysis data from Hycom with resolution 0.125o x 0.125o during 2017 and 2018. The result show that sea current depend on monsoonal wind. Average sea current during boreal winter move to South with speed about 5 – 15 cm/s with maximum speed until 40 cm/s during February. Contrary, sea current move to North during boreal summer. The Variation of direction surface current change the salinity and sea surface temperature. Salinity increase during boreal summer.